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• Project compilation requires a class that is not used anywhere

  - by Susei

  When I build with ant my project that uses libgdx, I get a strange error. It says that a class com.google.gwt.dom.client.ImageElement is not found, but it isn't used at all in the code. How can I find what makes this class necessary? Even searching over the whole project doesn't give any results. It says that error is at PixmapTextureAtlas.java:16 (class source), but there is no code that uses that ImageElement class. Adding the library containing com.google.gwt.dom.client.ImageElement class helps, of course, but I'd like to figure out why this class in needed. Here is the place in ant log that tells of the actual error: Compiling 3 source files to /home/suseika/Projects/tendiwa/client/bin /home/suseika/Projects/tendiwa/client/src/org/tendiwa/client/PixmapTextureAtlas.java:16: error: cannot access ImageElement class file for com.google.gwt.dom.client.ImageElement not found Here is the whole ant log: /usr/lib/jvm/java-7-oracle/bin/java -Xmx128m -Xss2m -Dant.home=/opt/intellijidea/lib/ant -Dant.library.dir=/opt/intellijidea/lib/ant/lib -Dfile.encoding=UTF-8 -classpath /opt/intellijidea/lib/ant/lib/ant-apache-regexp.jar:/opt/intellijidea/lib/ant/lib/ant-swing.jar:/opt/intellijidea/lib/ant/lib/ant-apache-xalan2.jar:/opt/intellijidea/lib/ant/lib/ant-jdepend.jar:/opt/intellijidea/lib/ant/lib/ant-apache-resolver.jar:/opt/intellijidea/lib/ant/lib/ant-jsch.jar:/opt/intellijidea/lib/ant/lib/ant.jar:/opt/intellijidea/lib/ant/lib/ant-testutil.jar:/opt/intellijidea/lib/ant/lib/ant-launcher.jar:/opt/intellijidea/lib/ant/lib/ant-apache-bsf.jar:/opt/intellijidea/lib/ant/lib/ant-commons-logging.jar:/opt/intellijidea/lib/ant/lib/ant-netrexx.jar:/opt/intellijidea/lib/ant/lib/ant-junit.jar:/opt/intellijidea/lib/ant/lib/ant-commons-net.jar:/opt/intellijidea/lib/ant/lib/ant-apache-bcel.jar:/opt/intellijidea/lib/ant/lib/ant-antlr.jar:/opt/intellijidea/lib/ant/lib/ant-apache-log4j.jar:/opt/intellijidea/lib/ant/lib/ant-jai.jar:/opt/intellijidea/lib/ant/lib/ant-apache-oro.jar:/opt/intellijidea/lib/ant/lib/ant-jmf.jar:/opt/intellijidea/lib/ant/lib/ant-javamail.jar:/usr/lib/jvm/java-7-oracle/lib/tools.jar:/opt/intellijidea/lib/idea_rt.jar com.intellij.rt.ant.execution.AntMain2 -logger com.intellij.rt.ant.execution.IdeaAntLogger2 -inputhandler com.intellij.rt.ant.execution.IdeaInputHandler -buildfile /home/suseika/Projects/tendiwa/client/build.xml jar build.xml property path description compile ant property property property description compile mkdir javac jar ant property description _core_src_available available ontology antcall property description _core_src_available available _build_core ant property property compile echo /home/suseika/Projects/tendiwa/client mkdir javac jar jar Building jar: /home/suseika/Projects/tendiwa/MainModule.jar description tempfile mkdir Created dir: /tmp/tendiwa373148820 unjar Expanding: /home/suseika/Projects/tendiwa/MainModule.jar into /tmp/tendiwa373148820 Expanding: /home/suseika/Projects/tendiwa/tendiwa-backend.jar into /tmp/tendiwa373148820 Expanding: /home/suseika/Projects/tendiwa/tendiwa-ontology.jar into /tmp/tendiwa373148820 copy Copying 1 file to /tmp/tendiwa373148820 java Created item short_sword Created item short_bow Created item bucket Created item boot Created item steel_morningstar Created item rifle_ammo Created item handAxe Created item iron_armor Created item steel_mace Created item jacket Created item fedora Created item wooden_arrow Saving sources to /tmp/tendiwa373148820/ontology/src tendiwa/resources/SoundTypes.java tendiwa/resources/CharacterTypes.java tendiwa/resources/ObjectTypes.java tendiwa/resources/FloorTypes.java tendiwa/resources/ItemTypes.java tendiwa/resources/MaterialTypes.java mkdir mkdir mkdir Created dir: /tmp/tendiwa373148820/ontology/bin javac jar Building jar: /home/suseika/Projects/tendiwa/tendiwa-ontology.jar echo Resources source code generated ant property property compile echo /home/suseika/Projects/tendiwa/client mkdir javac jar jar jar Building jar: /home/suseika/Projects/tendiwa/MainModule.jar mkdir javac /home/suseika/Projects/tendiwa/client/build.xml:25: Compile failed; see the compiler error output for details. at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1150) at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:912) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:390) at org.apache.tools.ant.Target.performTasks(Target.java:411) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399) at org.apache.tools.ant.Project.executeTarget(Project.java:1368) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1251) at org.apache.tools.ant.Main.runBuild(Main.java:809) at org.apache.tools.ant.Main.startAnt(Main.java:217) at org.apache.tools.ant.Main.start(Main.java:180) at org.apache.tools.ant.Main.main(Main.java:268) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.intellij.rt.ant.execution.AntMain2.main(AntMain2.java:30) /home/suseika/Projects/tendiwa/client/build.xml (25:46)'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds Compiling 3 source files to /home/suseika/Projects/tendiwa/client/bin /home/suseika/Projects/tendiwa/client/src/org/tendiwa/client/PixmapTextureAtlas.java:16: error: cannot access ImageElement class file for com.google.gwt.dom.client.ImageElement not found 1 error /home/suseika/Projects/tendiwa/client/build.xml:25: Compile failed; see the compiler error output for details. at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1150) at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:912) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:390) at org.apache.tools.ant.Target.performTasks(Target.java:411) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399) at org.apache.tools.ant.Project.executeTarget(Project.java:1368) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1251) at org.apache.tools.ant.Main.runBuild(Main.java:809) at org.apache.tools.ant.Main.startAnt(Main.java:217) at org.apache.tools.ant.Main.start(Main.java:180) at org.apache.tools.ant.Main.main(Main.java:268) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.intellij.rt.ant.execution.AntMain2.main(AntMain2.java:30) /home/suseika/Projects/tendiwa/client/build.xml:25: Compile failed; see the compiler error output for details. at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1150) at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:912) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:390) at org.apache.tools.ant.Target.performTasks(Target.java:411) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399) at org.apache.tools.ant.Project.executeTarget(Project.java:1368) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1251) at org.apache.tools.ant.Main.runBuild(Main.java:809) at org.apache.tools.ant.Main.startAnt(Main.java:217) at org.apache.tools.ant.Main.start(Main.java:180) at org.apache.tools.ant.Main.main(Main.java:268) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.intellij.rt.ant.execution.AntMain2.main(AntMain2.java:30) Ant build completed with 3 errors one warning in 4s at 10/30/13 3:09 AM Here is a part of ant file where this error appears: <path id="tendiwa.jars"> <fileset dir="../libs"> <include name="**/*.jar"/> </fileset> <pathelement path="../tendiwa-backend.jar"/> <pathelement path="../tendiwa-ontology.jar"/> <!--<fileset dir="/usr/share/java" includes="gwt*.jar"/>--> </path> <target name="compile"> <ant dir="../MainModule" target="jar"/> <mkdir dir="bin"/> <javac destdir="bin" failonerror="true"> <classpath> <path refid="tendiwa.jars"/> <!--temporary--> <pathelement path="../tendiwa-ontology.jar"/> <!--temporary--> <pathelement path="../MainModule.jar"/> <fileset dir="../libs" includes="**/*.jar"/> </classpath> <src> <pathelement path="Desktop/src"/> <pathelement path="src"/> </src> </javac> </target>

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• actionscript3: reflect-class applied on rotationY

  - by algro

  Hi, I'm using a class which applies a visual reflection-effect to defined movieclips. I use a reflection-class from here: link to source. It works like a charm except when I apply a rotation to the movieclip. In my case the reflection is still visible but only a part of it. What am I doing wrong? How could I pass/include the rotation to the Reflection-Class ? Thanks in advance! This is how you apply the Reflection Class to your movieclip: var ref_mc:MovieClip = new MoviClip(); addChild(ref_mc); var r1:Reflect = new Reflect({mc:ref_mc, alpha:50, ratio:50,distance:0, updateTime:0,reflectionDropoff:1}); Now I apply a rotation to my movieclip: ref_mc.rotationY = 30; And Here the Reflect-Class: package com.pixelfumes.reflect{ import flash.display.MovieClip; import flash.display.DisplayObject; import flash.display.BitmapData; import flash.display.Bitmap; import flash.geom.Matrix; import flash.display.GradientType; import flash.display.SpreadMethod; import flash.utils.setInterval; import flash.utils.clearInterval; public class Reflect extends MovieClip{ //Created By Ben Pritchard of Pixelfumes 2007 //Thanks to Mim, Jasper, Jason Merrill and all the others who //have contributed to the improvement of this class //static var for the version of this class private static var VERSION:String = "4.0"; //reference to the movie clip we are reflecting private var mc:MovieClip; //the BitmapData object that will hold a visual copy of the mc private var mcBMP:BitmapData; //the BitmapData object that will hold the reflected image private var reflectionBMP:Bitmap; //the clip that will act as out gradient mask private var gradientMask_mc:MovieClip; //how often the reflection should update (if it is video or animated) private var updateInt:Number; //the size the reflection is allowed to reflect within private var bounds:Object; //the distance the reflection is vertically from the mc private var distance:Number = 0; function Reflect(args:Object){ /*the args object passes in the following variables /we set the values of our internal vars to math the args*/ //the clip being reflected mc = args.mc; //the alpha level of the reflection clip var alpha:Number = args.alpha/100; //the ratio opaque color used in the gradient mask var ratio:Number = args.ratio; //update time interval var updateTime:Number = args.updateTime; //the distance at which the reflection visually drops off at var reflectionDropoff:Number = args.reflectionDropoff; //the distance the reflection starts from the bottom of the mc var distance:Number = args.distance; //store width and height of the clip var mcHeight = mc.height; var mcWidth = mc.width; //store the bounds of the reflection bounds = new Object(); bounds.width = mcWidth; bounds.height = mcHeight; //create the BitmapData that will hold a snapshot of the movie clip mcBMP = new BitmapData(bounds.width, bounds.height, true, 0xFFFFFF); mcBMP.draw(mc); //create the BitmapData the will hold the reflection reflectionBMP = new Bitmap(mcBMP); //flip the reflection upside down reflectionBMP.scaleY = -1; //move the reflection to the bottom of the movie clip reflectionBMP.y = (bounds.height*2) + distance; //add the reflection to the movie clip's Display Stack var reflectionBMPRef:DisplayObject = mc.addChild(reflectionBMP); reflectionBMPRef.name = "reflectionBMP"; //add a blank movie clip to hold our gradient mask var gradientMaskRef:DisplayObject = mc.addChild(new MovieClip()); gradientMaskRef.name = "gradientMask_mc"; //get a reference to the movie clip - cast the DisplayObject that is returned as a MovieClip gradientMask_mc = mc.getChildByName("gradientMask_mc") as MovieClip; //set the values for the gradient fill var fillType:String = GradientType.LINEAR; var colors:Array = [0xFFFFFF, 0xFFFFFF]; var alphas:Array = [alpha, 0]; var ratios:Array = [0, ratio]; var spreadMethod:String = SpreadMethod.PAD; //create the Matrix and create the gradient box var matr:Matrix = new Matrix(); //set the height of the Matrix used for the gradient mask var matrixHeight:Number; if (reflectionDropoff<=0) { matrixHeight = bounds.height; } else { matrixHeight = bounds.height/reflectionDropoff; } matr.createGradientBox(bounds.width, matrixHeight, (90/180)*Math.PI, 0, 0); //create the gradient fill gradientMask_mc.graphics.beginGradientFill(fillType, colors, alphas, ratios, matr, spreadMethod); gradientMask_mc.graphics.drawRect(0,0,bounds.width,bounds.height); //position the mask over the reflection clip gradientMask_mc.y = mc.getChildByName("reflectionBMP").y - mc.getChildByName("reflectionBMP").height; //cache clip as a bitmap so that the gradient mask will function gradientMask_mc.cacheAsBitmap = true; mc.getChildByName("reflectionBMP").cacheAsBitmap = true; //set the mask for the reflection as the gradient mask mc.getChildByName("reflectionBMP").mask = gradientMask_mc; //if we are updating the reflection for a video or animation do so here if(updateTime > -1){ updateInt = setInterval(update, updateTime, mc); } } public function setBounds(w:Number,h:Number):void{ //allows the user to set the area that the reflection is allowed //this is useful for clips that move within themselves bounds.width = w; bounds.height = h; gradientMask_mc.width = bounds.width; redrawBMP(mc); } public function redrawBMP(mc:MovieClip):void { // redraws the bitmap reflection - Mim Gamiet [2006] mcBMP.dispose(); mcBMP = new BitmapData(bounds.width, bounds.height, true, 0xFFFFFF); mcBMP.draw(mc); } private function update(mc):void { //updates the reflection to visually match the movie clip mcBMP = new BitmapData(bounds.width, bounds.height, true, 0xFFFFFF); mcBMP.draw(mc); reflectionBMP.bitmapData = mcBMP; } public function destroy():void{ //provides a method to remove the reflection mc.removeChild(mc.getChildByName("reflectionBMP")); reflectionBMP = null; mcBMP.dispose(); clearInterval(updateInt); mc.removeChild(mc.getChildByName("gradientMask_mc")); } } }

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• Excel VBA (2007) Subtotal method of Range class failed

  - by robihot

  Hi, I'm getting a Subtotal method of Range class failed Error when i try to run a macro. Code works GREAT (no errors) when i run it using Excel 2003. Here's a snippet... 'SubTotal Sheet Range("A1").Select Selection.Subtotal GroupBy:=1, Function:=xlSum, TotalList:=Array(3, 4, 5, 6, 7, _ 8, 9), Replace:=True, PageBreaks:=False, SummaryBelowData:=True Any help would be appreciated !!!

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• How to exclude HTML elements by ID or class using HTTrack or bash script

  - by pak memek

  I need to copy a website, but I want to exclude specific HTML elements by ID or class in all pages (using a bash script). I need this because I don't want ads or some other annoying features of some websites.

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• Class member functions instantiated by traits [policies, actually]

  - by Jive Dadson

  I am reluctant to say I can't figure this out, but I can't figure this out. I've googled and searched Stack Overflow, and come up empty. The abstract, and possibly overly vague form of the question is, how can I use the traits-pattern to instantiate member functions? [Update: I used the wrong term here. It should be "policies" rather than "traits." Traits describe existing classes. Policies prescribe synthetic classes.] The question came up while modernizing a set of multivariate function optimizers that I wrote more than 10 years ago. The optimizers all operate by selecting a straight-line path through the parameter space away from the current best point (the "update"), then finding a better point on that line (the "line search"), then testing for the "done" condition, and if not done, iterating. There are different methods for doing the update, the line-search, and conceivably for the done test, and other things. Mix and match. Different update formulae require different state-variable data. For example, the LMQN update requires a vector, and the BFGS update requires a matrix. If evaluating gradients is cheap, the line-search should do so. If not, it should use function evaluations only. Some methods require more accurate line-searches than others. Those are just some examples. The original version instantiates several of the combinations by means of virtual functions. Some traits are selected by setting mode bits that are tested at runtime. Yuck. It would be trivial to define the traits with #define's and the member functions with #ifdef's and macros. But that's so twenty years ago. It bugs me that I cannot figure out a whiz-bang modern way. If there were only one trait that varied, I could use the curiously recurring template pattern. But I see no way to extend that to arbitrary combinations of traits. I tried doing it using boost::enable_if, etc.. The specialized state information was easy. I managed to get the functions done, but only by resorting to non-friend external functions that have the this-pointer as a parameter. I never even figured out how to make the functions friends, much less member functions. The compiler (VC++ 2008) always complained that things didn't match. I would yell, "SFINAE, you moron!" but the moron is probably me. Perhaps tag-dispatch is the key. I haven't gotten very deeply into that. Surely it's possible, right? If so, what is best practice? UPDATE: Here's another try at explaining it. I want the user to be able to fill out an order (manifest) for a custom optimizer, something like ordering off of a Chinese menu - one from column A, one from column B, etc.. Waiter, from column A (updaters), I'll have the BFGS update with Cholesky-decompositon sauce. From column B (line-searchers), I'll have the cubic interpolation line-search with an eta of 0.4 and a rho of 1e-4, please. Etc... UPDATE: Okay, okay. Here's the playing-around that I've done. I offer it reluctantly, because I suspect it's a completely wrong-headed approach. It runs okay under vc++ 2008. #include <boost/utility.hpp> #include <boost/type_traits/integral_constant.hpp> namespace dj { struct CBFGS { void bar() {printf("CBFGS::bar %d\n", data);} CBFGS(): data(1234){} int data; }; template<class T> struct is_CBFGS: boost::false_type{}; template<> struct is_CBFGS<CBFGS>: boost::true_type{}; struct LMQN {LMQN(): data(54.321){} void bar() {printf("LMQN::bar %lf\n", data);} double data; }; template<class T> struct is_LMQN: boost::false_type{}; template<> struct is_LMQN<LMQN> : boost::true_type{}; // "Order form" struct default_optimizer_traits { typedef CBFGS update_type; // Selection from column A - updaters }; template<class traits> class Optimizer; template<class traits> void foo(typename boost::enable_if<is_LMQN<typename traits::update_type>, Optimizer<traits> >::type& self) { printf(" LMQN %lf\n", self.data); } template<class traits> void foo(typename boost::enable_if<is_CBFGS<typename traits::update_type>, Optimizer<traits> >::type& self) { printf("CBFGS %d\n", self.data); } template<class traits = default_optimizer_traits> class Optimizer{ friend typename traits::update_type; //friend void dj::foo<traits>(typename Optimizer<traits> & self); // How? public: //void foo(void); // How??? void foo() { dj::foo<traits>(*this); } void bar() { data.bar(); } //protected: // How? typedef typename traits::update_type update_type; update_type data; }; } // namespace dj int main() { dj::Optimizer<> opt; opt.foo(); opt.bar(); std::getchar(); return 0; }

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• Practically expected transfer rates for sdhc class 6

  - by bobobobo

  I went and bought an expensive SanDisk Extreme III SDHC 8GB class 6 chip. However when I dump data from the card to the machine via USB 2.0 cable, its only getting 5.0 MB/second maximum according to Windows 7 disk explorer. It still can take up to 20 minutes to dump the card when its near full. This is so far below the rated 20MB/s transfer speed I can't believe it. Is this normal or might I have a defective chip?

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• Trying to reduce the speed overhead of an almost-but-not-quite-int number class

  - by Fumiyo Eda

  I have implemented a C++ class which behaves very similarly to the standard int type. The difference is that it has an additional concept of "epsilon" which represents some tiny value that is much less than 1, but greater than 0. One way to think of it is as a very wide fixed point number with 32 MSBs (the integer parts), 32 LSBs (the epsilon parts) and a huge sea of zeros in between. The following class works, but introduces a ~2x speed penalty in the overall program. (The program includes code that has nothing to do with this class, so the actual speed penalty of this class is probably much greater than 2x.) I can't paste the code that is using this class, but I can say the following: +, -, +=, <, > and >= are the only heavily used operators. Use of setEpsilon() and getInt() is extremely rare. * is also rare, and does not even need to consider the epsilon values at all. Here is the class: #include <limits> struct int32Uepsilon { typedef int32Uepsilon Self; int32Uepsilon () { _value = 0; _eps = 0; } int32Uepsilon (const int &i) { _value = i; _eps = 0; } void setEpsilon() { _eps = 1; } Self operator+(const Self &rhs) const { Self result = *this; result._value += rhs._value; result._eps += rhs._eps; return result; } Self operator-(const Self &rhs) const { Self result = *this; result._value -= rhs._value; result._eps -= rhs._eps; return result; } Self operator-( ) const { Self result = *this; result._value = -result._value; result._eps = -result._eps; return result; } Self operator*(const Self &rhs) const { return this->getInt() * rhs.getInt(); } // XXX: discards epsilon bool operator<(const Self &rhs) const { return (_value < rhs._value) || (_value == rhs._value && _eps < rhs._eps); } bool operator>(const Self &rhs) const { return (_value > rhs._value) || (_value == rhs._value && _eps > rhs._eps); } bool operator>=(const Self &rhs) const { return (_value >= rhs._value) || (_value == rhs._value && _eps >= rhs._eps); } Self &operator+=(const Self &rhs) { this->_value += rhs._value; this->_eps += rhs._eps; return *this; } Self &operator-=(const Self &rhs) { this->_value -= rhs._value; this->_eps -= rhs._eps; return *this; } int getInt() const { return(_value); } private: int _value; int _eps; }; namespace std { template<> struct numeric_limits<int32Uepsilon> { static const bool is_signed = true; static int max() { return 2147483647; } } }; The code above works, but it is quite slow. Does anyone have any ideas on how to improve performance? There are a few hints/details I can give that might be helpful: 32 bits are definitely insufficient to hold both _value and _eps. In practice, up to 24 ~ 28 bits of _value are used and up to 20 bits of _eps are used. I could not measure a significant performance difference between using int32_t and int64_t, so memory overhead itself is probably not the problem here. Saturating addition/subtraction on _eps would be cool, but isn't really necessary. Note that the signs of _value and _eps are not necessarily the same! This broke my first attempt at speeding this class up. Inline assembly is no problem, so long as it works with GCC on a Core i7 system running Linux!

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• Excel VBA (2007) Subtotal method of Range class failed

  - by robihot

  I'm getting a Subtotal method of Range class failed Error when I try to run a macro in Excel 2007. Code works GREAT (no errors) when I run it using Excel 2003. Here's a snippet... 'SubTotal Sheet Range("A1").Select Selection.Subtotal GroupBy:=1, Function:=xlSum, TotalList:=Array(3, 4, 5, 6, 7, _ 8, 9), Replace:=True, PageBreaks:=False, SummaryBelowData:=True Any help would be appreciated.

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• CSS Containers and Framing

  - by CaffeineAddiction

  I am attempting to code a dynamic object for use in an unordered list. I have a mock up of the HTML here: <ul class='Main'> <li class='Node'> <span class='Node_Light'> </span> <span class='Node_Control'> <span class='Ctrl_Name'> <span class='CtrlN_Text'>Random Name</span> <span class='CtrlN_Edit'>[%]</span> </span><br/> <span class='Ctrl_ID'>ff:ff:ff:ff:ff:ff</span><br/> <span class='Ctrl_Buttons'> <span class='CBttn_On'>[%]</span> <span class='CBttn_Off'>[%]</span> <span class='CBttn_Blink'>[%]</span> <span class='CBttn_Config'>[%]</span> <span class='CBttn_Graph'>[%]</span> </span> </span> <span class='Node_Data'> <span class='ND_Sens0'> <span class='Sens_Lable'>temp:</span> <span class='Sens_Data'>72</span> <span class='Sens_Units'>&#176;F</span> </span><br/> <span class='ND_Sens1'> <span class='Sens_Lable'>Sens1:</span> <span class='Sens_Data'>Off</span> <span class='Sens_Units'></span> </span><br/> <span class='ND_Sens2'> <span class='Sens_Lable'>Sens2:</span> <span class='Sens_Data'>Off</span> <span class='Sens_Units'></span> </span><br/> <span class='ND_Sens3'> <span class='Sens_Lable'>Sens3:</span> <span class='Sens_Data'>Off</span> <span class='Sens_Units'></span> </span><br/> <span class='ND_Sens4'> <span class='Sens_Lable'>Sens4:</span> <span class='Sens_Data'>Off</span> <span class='Sens_Units'></span> </span> </span> </li> </ul> and I am attempting to wrangle this HTML into something like: My first problem was that the 3x Outer elements would stack vertically instead of horizontally ... I solved this with the following CSS, but it doesnt feel like the right solution: ul { list-style-type: none; padding:0; margin:0; } .Node { } .Node_Light { height:6em; width:2em; position:absolute; border-style:solid; border-width:1px; } .Node_Control { height:6em; width:15em; position:absolute; left:2.55em; border-style:solid; border-width:1px; } .Node_Data { height:6em; width:6em; position:absolute; left:17.6em; border-style:solid; border-width:1px; } One thought was to use a table, but I dont think that is the correct solution either. Ideas? I would like to have the content dynamically resize on page resize and am not opposed to doing it all via JavaScript, but I have a feeling it would be more efficient to do it via CSS ... I just dont know where to begin.

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• Object oriented n-tier design. Am I abstracting too much? Or not enough?

  - by max

  Hi guys, I'm building my first enterprise grade solution (at least I'm attempting to make it enterprise grade). I'm trying to follow best practice design patterns but am starting to worry that I might be going too far with abstraction. I'm trying to build my asp.net webforms (in C#) app as an n-tier application. I've created a Data Access Layer using an XSD strongly-typed dataset that interfaces with a SQL server backend. I access the DAL through some Business Layer Objects that I've created on a 1:1 basis to the datatables in the dataset (eg, a UsersBLL class for the Users datatable in the dataset). I'm doing checks inside the BLL to make sure that data passed to DAL is following the business rules of the application. That's all well and good. Where I'm getting stuck though is the point at which I connect the BLL to the presentation layer. For example, my UsersBLL class deals mostly with whole datatables, as it's interfacing with the DAL. Should I now create a separate "User" (Singular) class that maps out the properties of a single user, rather than multiple users? This way I don't have to do any searching through datatables in the presentation layer, as I could use the properties created in the User class. Or would it be better to somehow try to handle this inside the UsersBLL? Sorry if this sounds a little complicated... Below is the code from the UsersBLL: using System; using System.Data; using PedChallenge.DAL.PedDataSetTableAdapters; [System.ComponentModel.DataObject] public class UsersBLL { private UsersTableAdapter _UsersAdapter = null; protected UsersTableAdapter Adapter { get { if (_UsersAdapter == null) _UsersAdapter = new UsersTableAdapter(); return _UsersAdapter; } } [System.ComponentModel.DataObjectMethodAttribute (System.ComponentModel.DataObjectMethodType.Select, true)] public PedChallenge.DAL.PedDataSet.UsersDataTable GetUsers() { return Adapter.GetUsers(); } [System.ComponentModel.DataObjectMethodAttribute (System.ComponentModel.DataObjectMethodType.Select, false)] public PedChallenge.DAL.PedDataSet.UsersDataTable GetUserByUserID(int userID) { return Adapter.GetUserByUserID(userID); } [System.ComponentModel.DataObjectMethodAttribute (System.ComponentModel.DataObjectMethodType.Select, false)] public PedChallenge.DAL.PedDataSet.UsersDataTable GetUsersByTeamID(int teamID) { return Adapter.GetUsersByTeamID(teamID); } [System.ComponentModel.DataObjectMethodAttribute (System.ComponentModel.DataObjectMethodType.Select, false)] public PedChallenge.DAL.PedDataSet.UsersDataTable GetUsersByEmail(string Email) { return Adapter.GetUserByEmail(Email); } [System.ComponentModel.DataObjectMethodAttribute (System.ComponentModel.DataObjectMethodType.Insert, true)] public bool AddUser(int? teamID, string FirstName, string LastName, string Email, string Role, int LocationID) { // Create a new UsersRow instance PedChallenge.DAL.PedDataSet.UsersDataTable Users = new PedChallenge.DAL.PedDataSet.UsersDataTable(); PedChallenge.DAL.PedDataSet.UsersRow user = Users.NewUsersRow(); if (UserExists(Users, Email) == true) return false; if (teamID == null) user.SetTeamIDNull(); else user.TeamID = teamID.Value; user.FirstName = FirstName; user.LastName = LastName; user.Email = Email; user.Role = Role; user.LocationID = LocationID; // Add the new user Users.AddUsersRow(user); int rowsAffected = Adapter.Update(Users); // Return true if precisely one row was inserted, // otherwise false return rowsAffected == 1; } [System.ComponentModel.DataObjectMethodAttribute (System.ComponentModel.DataObjectMethodType.Update, true)] public bool UpdateUser(int userID, int? teamID, string FirstName, string LastName, string Email, string Role, int LocationID) { PedChallenge.DAL.PedDataSet.UsersDataTable Users = Adapter.GetUserByUserID(userID); if (Users.Count == 0) // no matching record found, return false return false; PedChallenge.DAL.PedDataSet.UsersRow user = Users[0]; if (teamID == null) user.SetTeamIDNull(); else user.TeamID = teamID.Value; user.FirstName = FirstName; user.LastName = LastName; user.Email = Email; user.Role = Role; user.LocationID = LocationID; // Update the product record int rowsAffected = Adapter.Update(user); // Return true if precisely one row was updated, // otherwise false return rowsAffected == 1; } [System.ComponentModel.DataObjectMethodAttribute (System.ComponentModel.DataObjectMethodType.Delete, true)] public bool DeleteUser(int userID) { int rowsAffected = Adapter.Delete(userID); // Return true if precisely one row was deleted, // otherwise false return rowsAffected == 1; } private bool UserExists(PedChallenge.DAL.PedDataSet.UsersDataTable users, string email) { // Check if user email already exists foreach (PedChallenge.DAL.PedDataSet.UsersRow userRow in users) { if (userRow.Email == email) return true; } return false; } } Some guidance in the right direction would be greatly appreciated!! Thanks all! Max

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• Specifying $(this).val() for two different elements (by class)

  - by Chaya Cooper

  What would be the correct syntax for specifying 2 elements by class to evaluate their values when they have different classes? This snippet adds and/or removes values from "increase_priority1" when the user has selected both a complaint and ranked the importance level of the issue, however when I added the 2nd element (".complaint select") to the If Statement it stopped working properly and only accepts input from the 2nd item (Waist) after the 1rst item (Shoulders) has been selected. I believe the problem is that it's unable to determine which ".complaint select" to use, but I haven't been able to figure out how to use (this) for the 2nd element, or another similar approach. The complete function includes apx. 20 similar pairs of If Statements to set & unset other elements, and a working example with 4 pairs is available at http://jsfiddle.net/chayacooper/vWLEn/168/ I'm trying to avoid using ID's because that becomes pretty cumbersome to do for 25 Select elements and each of their values (ID's were also problematic because it stopped working when I added a 2nd element to the If Statement for removing/unsetting a value) Javascript var $increase_priority1 = $(".increase_priority1"); // If value is "Shoulders", complaint was Shoulders too small (select name=Shoulders value=Too_small) and it was assigned a level 1 priority (select class="ranking shoulders" value=1). // var's for other issues and priority levels go here $(".ranking, .complaint select").change(function() { var name = $(this).data("name"); //get priority name if ($(".complaint select").val() === "Too_small" && $(this).val() == 1 && !$(this).data("increase_priority1")) { //rank is 1, and not yet added to priority list $("<option>", {text:name, val:name}).appendTo($increase_priority1); $(this).data("increase_priority1", true); //flag as a priority item } if ($(this).data("increase_priority1") && ($(this).val() != 1 || $(".complaint select").val() != "Too_small")) { //is in priority list, but now demoted $("option[value=" + name + "]", $increase_priority1).remove(); $(this).removeData("increase_priority1"); //no longer a priority item } // Similar If Statements to set & unset other elements go here }); HTML <div> <label>To Increase - 1rst Priority <select name="modify_increase_1rst[]" class="increase_priority1" multiple> </select></label> </div> <div> <span class="complaint"> <label>Shoulders</label> <select name=Shoulders> <option value="null">Select</option><option value="Too_small">Too Small</option><option value="Too_big">Too Big</option><option value="Too_expensive">Too expensive</option> </select> </span> <label>Ranking</label> <select name="importance_bother_shoulders" class="ranking shoulders" data-name="Shoulders"> <option value="Null">Select</option><option value="1">1</option><option value="2">2</option><option value="3">3</option><option value="4">4</option> <option value="5">5</option> </select> </div> <div> <span class="complaint"> <label>Waist</label> <select name=Waist> <option value="null">Select</option><option value="Too_small">Too Small</option><option value="Too_big">Too Big</option><option value="Too_expensive">Too expensive</option> </select> </span> <label>Ranking</label> <select name="importance_bother_waist" class="ranking waist" data-name="Waist"> <option value="Null">Select</option><option value="1">1</option><option value="2">2</option><option value="3">3</option><option value="4">4</option> <option value="5">5</option> </select> </div>

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• How to exlude id or class using Httrack (bash script)

  - by pak memek

  Hi, i need copying website, but i want excluding specific id and class in all pages of a website (using bash script). i need this because i dont want ads and some other annoying feature of some website. thanks

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• How can I make vim show the current class and method I'm editing

  - by dcrosta

  Does anyone know if it's possible (or know of an existing vim script or plugin) that can create a "status bar" that shows the name of the current class and method (or function) I'm editing? I'm imagining that it would plug into the syntax parser for the filetype of the current buffer, and display a breadcrumb trail to show you what you're currently editing. I don't know vimscript well enough to suggest any more than that, but if there aren't any good solutions already, I may begin to hack on one, so suggestions as to where to start are welcome, too!

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• Cannot see the variable In my own JQuery plugin's function.

  - by qinHaiXiang

  I am writing one of my own JQuery plugin. And I got some strange which make me confused. I am using JQuery UI datepicker with my plugin. ;(function($){ var newMW = 1, mwZIndex = 0; // IgtoMW contructor Igtomw = function(elem , options){ var activePanel, lastPanel, daysWithRecords, sliding; // used to check the animation below is executed to the end. // used to access the plugin's default configuration this.opts = $.extend({}, $.fn.igtomw.defaults, options); // intial the model window this.intialMW(); }; $.extend(Igtomw.prototype, { // intial model window intialMW : function(){ this.sliding = false; //this.daysWithRecords = []; this.igtoMW = $('<div />',{'id':'igto'+newMW,'class':'igtoMW',}) .css({'z-index':mwZIndex}) // make it in front of all exist model window; .appendTo('body') .draggable({ containment: 'parent' , handle: '.dragHandle' , distance: 5 }); //var igtoWrapper = igtoMW.append($('<div />',{'class':'igtoWrapper'})); this.igtoWrapper = $('<div />',{'class':'igtoWrapper'}).appendTo(this.igtoMW); this.igtoOpacityBody = $('<div />',{'class':'igtoOpacityBody'}).appendTo(this.igtoMW); //var igtoHeaderInfo = igtoWrapper.append($('<div />',{'class':'igtoHeaderInfo dragHandle'})); this.igtoHeaderInfo = $('<div />',{'class':'igtoHeaderInfo dragHandle'}) .appendTo(this.igtoWrapper); this.igtoQuickNavigation = $('<div />',{'class':'igtoQuickNavigation'}) .css({'color':'#fff'}) .appendTo(this.igtoWrapper); this.igtoContentSlider = $('<div />',{'class':'igtoContentSlider'}) .appendTo(this.igtoWrapper); this.igtoQuickMenu = $('<div />',{'class':'igtoQuickMenu'}) .appendTo(this.igtoWrapper); this.igtoFooter = $('<div />',{'class':'igtoFooter dragHandle'}) .appendTo(this.igtoWrapper); // append to igtoHeaderInfo this.headTitle = this.igtoHeaderInfo.append($('<div />',{'class':'headTitle'})); // append to igtoQuickNavigation this.igQuickNav = $('<div />', {'class':'igQuickNav'}) .html('??') .appendTo(this.igtoQuickNavigation); // append to igtoContentSlider this.igInnerPanelTopMenu = $('<div />',{'class':'igInnerPanelTopMenu'}) .appendTo(this.igtoContentSlider); this.igInnerPanelTopMenu.append('<div class="igInnerPanelButtonPreWrapper"><a href="" class="igInnerPanelButton Pre" action="" style="background-image:url(images/igto/igInnerPanelTopMenu.bt.bg.png);"></a></div>'); this.igInnerPanelTopMenu.append('<div class="igInnerPanelSearch"><input type="text" name="igInnerSearch" /><a href="" class="igInnerSearch">??</a></div>' ); this.igInnerPanelTopMenu.append('<div class="igInnerPanelButtonNextWrapper"><a href="" class="igInnerPanelButton Next" action="sm" style="background-image:url(images/igto/igInnerPanelTopMenu.bt.bg.png); background-position:-272px"></a></div>' ); this.igInnerPanelBottomMenu = $('<div />',{'class':'igInnerPanelBottomMenu'}) .appendTo(this.igtoContentSlider); this.icWrapper = $('<div />',{'class':'icWrapper','id':'igto'+newMW+'Panel'}) .appendTo(this.igtoContentSlider); this.icWrapperCotentPre = $('<div class="slider pre"></div>').appendTo(this.icWrapper); this.icWrapperCotentShow = $('<div class="slider firstShow "></div>').appendTo(this.icWrapper); this.icWrapperCotentnext = $('<div class="slider next"></div>').appendTo(this.icWrapper); this.initialPanel(); this.initialQuickMenus(); console.log(this.leftPad(9)); newMW++; mwZIndex++; this.igtoMW.bind('mousedown',function(){ var $this = $(this); //alert($this.css('z-index') + ' '+mwZIndex); if( parseInt($this.css('z-index')) === (mwZIndex-1) ) return; $this.css({'z-index':mwZIndex}); mwZIndex++; //alert(mwZIndex); }); }, initialPanel : function(){ this.defaultPanelNum = this.opts.initialPanel; this.activePanel = this.defaultPanelNum; this.lastPanel = this.defaultPanelNum; this.defaultPanel = this.loadPanelContents(this.defaultPanelNum); $(this.defaultPanel).appendTo(this.icWrapperCotentShow); }, initialQuickMenus : function(){ // store the current element var obj = this; var defaultQM = this.opts.initialQuickMenu; var strMenu = ''; var marginFirstEle = '8'; $.each(defaultQM,function(key,value){ //alert(key+':'+value); if(marginFirstEle === '8'){ strMenu += '<a href="" class="btPanel" panel="'+key+'" style="margin-left: 8px;" >'+value+'</a>'; marginFirstEle = '4'; } else{ strMenu += '<a href="" class="btPanel" panel="'+key+'" style="margin-left: 4px;" >'+value+'</a>'; } }); // append to igtoQuickMenu this.igtoQMenu = $(strMenu).appendTo(this.igtoQuickMenu); this.igtoQMenu.bind('click',function(event){ event.preventDefault(); var element = $(this); if(element.is('.active')){ return; } else{ $(obj.igtoQMenu).removeClass('active'); element.addClass('active'); } var d = new Date(); var year = d.getFullYear(); var month = obj.leftPad( d.getMonth() ); var inst = null; if( obj.sliding === false){ console.log(obj.lastPanel); var currentPanelNum = parseInt(element.attr('panel')); obj.checkAvailability(); obj.getDays(year,month,inst,currentPanelNum); obj.slidePanel(currentPanelNum); obj.activePanel = currentPanelNum; console.log(obj.activePanel); obj.lastPanel = obj.activePanel; obj.icWrapper.find('input').val(obj.activePanel); } }); }, initialLoginPanel : function(){ var obj = this; this.igPanelLogin = $('<div />',{'class':"igPanelLogin"}); this.igEnterName = $('<div />',{'class':"igEnterName"}).appendTo(this.igPanelLogin); this.igInput = $('<input type="text" name="name" value="???" />').appendTo(this.igEnterName); this.igtoLoginBtWrap = $('<div />',{'class':"igButtons"}).appendTo(this.igPanelLogin); this.igtoLoginBt = $('<a href="" class="igtoLoginBt" action="OK" >??</a>\ <a href="" class="igtoLoginBt" action="CANCEL" >??</a>\ <a href="" class="igtoLoginBt" action="ADD" >????</a>').appendTo(this.igtoLoginBtWrap); this.igtoLoginBt.bind('click',function(event){ event.preventDefault(); var elem = $(this); var action = elem.attr('action'); var userName = obj.igInput.val(); obj.loadRootMenu(); }); return this.igPanelLogin; }, initialWatchHistory : function(){ var obj = this; // for thirt part plugin used if(this.sliding === false){ this.watchHistory = $('<div />',{'class':'igInnerPanelSlider'}).append($('<div />',{'class':'igInnerPanel_pre'}).addClass('igInnerPanel')) .append($('<div />',{'class':'igInnerPanel'}).datepicker({ dateFormat: 'yy-mm-dd',defaultDate: '2010-12-01' ,showWeek: true,firstDay: 1, //beforeShow:setDateStatistics(), onChangeMonthYear:function(year, month, inst) { var panelNum = 1; month = obj.leftPad(month); obj.getDays(year,month,inst,panelNum); } , beforeShowDay: obj.checkAvailability, onSelect: function(dateText, inst) { obj.checkAvailability(); } }).append($('<div />',{'class':'extraMenu'})) ) .append($('<div />',{'class':'igInnerPanel_next'}).addClass('igInnerPanel')); return this.watchHistory; } }, loadPanelContents : function(panelNum){ switch(panelNum){ case 1: alert('inside loadPanelContents') return this.initialWatchHistory(); break; case 2: return this.initialWatchHistory(); break; case 3: return this.initialWatchHistory(); break; case 4: return this.initialWatchHistory(); break; case 5: return this.initialLoginPanel(); break; } }, loadRootMenu : function(){ var obj = this; var mainMenuPanel = $('<div />',{'class':'igRootMenu'}); var currentMWId = this.igtoMW.attr('id'); this.activePanel = 0; $('#'+currentMWId+'Panel .pre'). queue(function(next){ $(this). html(mainMenuPanel). addClass('panelShow'). removeClass('pre'). attr('panelNum',0); next(); }). queue(function(next){ $('<div style="width:0;" class="slider pre"></div>'). prependTo('#'+currentMWId+'Panel').animate({width:348}, function(){ $('#'+currentMWId+'Panel .slider:last').remove() $('#'+currentMWId+'Panel .slider:last').replaceWith('<div class="slider next"></div>'); $('.btMenu').remove(); // remove bottom quick menu obj.sliding = false; $(this).removeAttr('style'); }); $('.igtoQuickMenu .active').removeClass('active'); next(); }); }, slidePanel : function(currentPanelNum){ var currentMWId = this.igtoMW.attr('id'); var obj = this; //alert(obj.loadPanelContents(currentPanelNum)); if( this.activePanel > currentPanelNum){ $('#'+currentMWId+'Panel .pre'). queue(function(next){ alert('inside slidePanel') //var initialDate = getPanelDateStatus(panelNum); //console.log('intial day in bigger panel '+initialDate) $(this). html(obj.loadPanelContents(currentPanelNum)). addClass('panelShow'). removeClass('pre'). attr('panelNum',currentPanelNum); $('#'+currentMWId+'Panel .next').remove(); next(); }). queue(function(next){ $('<div style="width:0;" class="slider pre"></div>'). prependTo('#'+currentMWId+'Panel').animate({width:348}, function(){ //$('#igto1Panel .slider:last').find(setPanel(currentPanelNum)).datepicker('destroy'); $('#'+currentMWId+'Panel .slider:last').empty().removeClass('panelShow').addClass('next').removeAttr('panelNum'); $('#'+currentMWId+'Panel .slider:last').replaceWith('<div class="slider next"></div>') obj.sliding = false;console.log('inuse inside animation: '+obj.sliding); $(this).removeAttr('style'); }); next(); }); } else{ ///// current panel num smaller than next $('#'+currentMWId+'Panel .next'). queue(function(next){ $(this). html(obj.loadPanelContents(currentPanelNum)). addClass('panelShow'). removeClass('next'). attr('panelNum',currentPanelNum); $('<div class="slider next">empty</div>').appendTo('#'+currentMWId+'Panel'); next(); }). queue(function(next){ $('#'+currentMWId+'Panel .pre').animate({width:0}, function(){ $(this).remove(); //$('#igto1Panel .slider:first').find(setPanel(currentPanelNum)).datepicker('destroy'); $('#'+currentMWId+'Panel .slider:first').empty().removeClass('panelShow').addClass('pre').removeAttr('panelNum').removeAttr('style'); $('#'+currentMWId+'Panel .slider:first').replaceWith('<div class="slider pre"></div>') obj.sliding = false; console.log('inuse inside animation: '+obj.sliding); }); next(); }); } }, getDays : function(year,month,inst,panelNum){ var obj = this; // depand on the mysql qurey condition var table_of_record = 'moviewh';//getTable(panelNum); var date_of_record = 'watching_date';//getTableDateCol(panelNum); var date_to_find = year+'-'+month; var node_of_xml_date_list = 'whDateRecords';//getXMLDateNode(panelNum); var user_id = '1';//getLoginUserId(); //var daysWithRecords = []; // empty array before asigning this.daysWithRecords.length = 0; $.ajax({ type: "GET", url: "include/get.date.list.process.php", data:({ table_of_record : table_of_record,date_of_record:date_of_record,date_to_find:date_to_find,user_id:user_id,node_of_xml_date_list:node_of_xml_date_list }), dataType: "json", cache: false, // force broser don't cache the xml file async: false, // using this option to prevent datepicker refresh ??NO success:function(data){ // had no date records if(data === null) return; obj.daysWithRecords = data; } }); //setPanelDateStatus(year,month,panelNum); console.log('call from getdays() ' + this.daysWithRecords); }, checkAvailability : function(availableDays) { // var i; var checkdate = $.datepicker.formatDate('yy-mm-dd', availableDays); //console.log( checkdate); // for(var i = 0; i < this.daysWithRecords.length; i++) { // // if(this.daysWithRecords[i] == checkdate){ // // return [true, "available"]; // } // } //console.log('inside check availablility '+ this.daysWithRecords); //return [true, "available"]; console.log(typeof this.daysWithRecords) for(i in this.daysWithRecords){ //if(this.daysWithRecords[i] == checkdate){ console.log(typeof this.daysWithRecords[i]); //return [true, "available"]; //} } return [true, "available"]; //return [false, ""]; }, leftPad : function(num) { return (num < 10) ? '0' + num : num; } }); $.fn.igtomw = function(options){ // Merge options passed in with global defaults var opt = $.extend({}, $.fn.igtomw.defaults , options); return this.each(function() { new Igtomw(this,opt); }); }; $.fn.igtomw.defaults = { // 0:mainMenu 1:whatchHistor 2:requestHistory 3:userManager // 4:shoppingCart 5:loginPanel initialPanel : 5, // default panel is LoginPanel initialQuickMenu : {'1':'whatchHIstory','2':'????','3':'????','4':'????'} // defalut quick menu }; })(jQuery); usage: $('.openMW').click(function(event){ event.preventDefault(); $('<div class="">').igtomw(); }) HTML code: <div id="taskBarAndStartMenu"> <div class="taskBarAndStartMenuM"> <a href="" class="openMW" >??IGTO</a> </div> <div class="taskBarAndStartMenuO"></div> </div> In my work flow: when I click the "whatchHistory" button, my plugin would load a panel with JQuery UI datepicker applied which days had been set to be availabled or not. I am using the function "getDays()" to get the available days list and stored the data inside daysWithRecords, and final the UI datepicker's function "beforeShowDay()" called the function "checkAvailability()" to set the days. the variable "daysWithRecords" was declared inside Igtomw = function(elem , options) and was initialized inside the function getDays() I am using the function "initialWatchHistory()" to initialization and render the JQuery UI datepicker in the web. My problem is the function "checkAvailability()" cannot see the variable "daysWithRecords".The firebug prompts me that "daysWithRecords" is "undefined". this is the first time I write my first plugin. So .... Thank you very much for any help!!

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• How does an optimizing compiler react to a program with nested loops?

  - by D.Singh

  Say you have a bunch of nested loops. public void testMethod() { for(int i = 0; i<1203; i++){ //some computation for(int k=2; k<123; k++){ //some computation for(int j=2; j<12312; j++){ //some computation for(int l=2; l<123123; l++){ //some computation for(int p=2; p<12312; p++){ //some computation } } } } } } When the above code reaches the stage where the compiler will try to optimize it (I believe it's when the intermediate language needs to converted to machine code?), what will the compiler try to do? Is there any significant optimization that will take place? I understand that the optimizer will break up the loops by means of loop fission. But this is only per loop isn't it? What I mean with my question is will it take any action exclusively based on seeing the nested loops? Or will it just optimize the loops one by one? If the Java VM complicates the explanation then please just assume that it's C or C++ code.

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• Class Issue (The type XXX is already defined )

  - by Android Stack

  I have listview app exploring cities each row point to diffrent city , in each city activity include button when clicked open new activity which is infinite gallery contains pics of that city , i add infinite gallery to first city and work fine , when i want to add it to the second city , it gave me red mark error in the class as follow : 1- The type InfiniteGalleryAdapter is already defined. 2-The type InfiniteGallery is already defined. i tried to change class name with the same result ,i delete R.jave and eclipse rebuild it with same result also i uncheck the java builder from project properties ,get same red mark error. please any help and advice will be appreciated thanks My Code : public class SecondCity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Boolean customTitleSupported = requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); // Set the layout to use setContentView(R.layout.main); if (customTitleSupported) { getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE,R.layout.custom_title); TextView tv = (TextView) findViewById(R.id.tv); Typeface face=Typeface.createFromAsset(getAssets(),"BFantezy.ttf"); tv.setTypeface(face); tv.setText("MY PICTURES"); } InfiniteGallery galleryOne = (InfiniteGallery) findViewById(R.id.galleryOne); galleryOne.setAdapter(new InfiniteGalleryAdapter(this)); } } class InfiniteGalleryAdapter extends BaseAdapter { **//red mark here (InfiniteGalleryAdapter)** private Context mContext; public InfiniteGalleryAdapter(Context c, int[] imageIds) { this.mContext = c; } public int getCount() { return Integer.MAX_VALUE; } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } private LayoutInflater inflater=null; public InfiniteGalleryAdapter(Context a) { this.mContext = a; inflater = (LayoutInflater)mContext.getSystemService ( Context.LAYOUT_INFLATER_SERVICE); } public class ViewHolder{ public TextView text; public ImageView image; } private int[] images = { R.drawable.pic_1, R.drawable.pic_2, R.drawable.pic_3, R.drawable.pic_4, R.drawable.pic_5 }; private String[] name = { "This is first picture (1) " , "This is second picture (2)", "This is third picture (3)", "This is fourth picture (4)", " This is fifth picture (5)", }; public View getView(int position, View convertView, ViewGroup parent) { ImageView i = getImageView(); int itemPos = (position % images.length); try { i.setImageResource(images[itemPos]); ((BitmapDrawable) i.getDrawable()). setAntiAlias (true); } catch (OutOfMemoryError e) { Log.e("InfiniteGalleryAdapter", "Out of memory creating imageview. Using empty view.", e); } View vi=convertView; ViewHolder holder; if(convertView==null){ vi = inflater.inflate(R.layout.gallery_items, null); holder=new ViewHolder(); holder.text=(TextView)vi.findViewById(R.id.textView1); holder.image=(ImageView)vi.findViewById(R.id.image); vi.setTag(holder); } else holder=(ViewHolder)vi.getTag(); holder.text.setText(name[itemPos]); final int stub_id=images[itemPos]; holder.image.setImageResource(stub_id); return vi; } private ImageView getImageView() { ImageView i = new ImageView(mContext); return i; } } class InfiniteGallery extends Gallery { **//red mark here (InfiniteGallery)** public InfiniteGallery(Context context) { super(context); init(); } public InfiniteGallery(Context context, AttributeSet attrs) { super(context, attrs); init(); } public InfiniteGallery(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); init(); } private void init(){ // These are just to make it look pretty setSpacing(25); setHorizontalFadingEdgeEnabled(false); } public void setResourceImages(int[] name){ setAdapter(new InfiniteGalleryAdapter(getContext(), name)); setSelection((getCount() / 2)); } }

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• PHP: Proper way of using a PDO database connection in a class

  - by Cortopasta

  Trying to organize all my code into classes, and I can't get the database queries to work inside a class. I tested it without the class wrapper, and it worked fine. Inside the class = no dice. What about my classes is messing this up? class ac { public function dbConnect() { global $dbcon; $dbInfo['server'] = "localhost"; $dbInfo['database'] = "sn"; $dbInfo['username'] = "sn"; $dbInfo['password'] = "password"; $con = "mysql:host=" . $dbInfo['server'] . "; dbname=" . $dbInfo['database']; $dbcon = new PDO($con, $dbInfo['username'], $dbInfo['password']); $dbcon->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $error = $dbcon->errorInfo(); if($error[0] != "") { print "<p>DATABASE CONNECTION ERROR:</p>"; print_r($error); } } public function authentication() { global $dbcon; $plain_username = $_POST['username']; $md5_password = md5($_POST['password']); $ac = new ac(); if (is_int($ac->check_credentials($plain_username, $md5_password))) { ?> <p>Welcome!</p> <!--go to account manager here--> <?php } else { ?> <p>Not a valid username and/or password. Please try again.</p> <?php unset($_POST['username']); unset($_POST['password']); $ui = new ui(); $ui->start(); } } private function check_credentials($plain_username, $md5_password) { global $dbcon; $userid = $dbcon->prepare('SELECT id FROM users WHERE username = :username AND password = :password LIMIT 1'); $userid->bindParam(':username', $plain_username); $userid->bindParam(':password', $md5_password); $userid->execute(); print_r($dbcon->errorInfo()); $id = $userid->fetch(); Return $id; } } And if it's any help, here's the class that's calling it: require_once("ac/acclass.php"); $ac = new ac(); $ac->dbconnect(); class ui { public function start() { if ((!isset($_POST['username'])) && (!isset($_POST['password']))) { $ui = new ui(); $ui->loginform(); } else { $ac = new ac(); $ac->authentication(); } } private function loginform() { ?> <form id="userlogin" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post"> User:<input type="text" name="username"/><br/> Password:<input type="password" name="password"/><br/> <input type="submit" value="submit"/> </form> <?php } }

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• How to call a C# DLL from InstallerClass overrides?

  - by simpleton

  I have a setup and deployment project. In it I have an Installer.cs class, created from the basic Installer Class template. In the Install override, I have this code taken from http://msdn.microsoft.com/en-us/library/d9k65z2d.aspx. public override void Install(IDictionary stateSaver) { base.Install(stateSaver); System.Diagnostics.Process.Start("http://www.microsoft.com"); } Everything works when I install the application, but the problem arises when I try to call anything from an external C# class library that I also wrote. Example: public override void Install(IDictionary stateSaver) { base.Install(stateSaver); System.Diagnostics.Process.Start("http://www.microsoft.com"); MyLibrary.SomeMethod(); } The problem is, I don't believe the library call is actually happening. I tagged the entire process line by line, with EventLog.WriteEvent()s, and each line in the Install override is seemlingly 'hit', putting entries in the event log, but I do not receive any exceptions for the library call SomeMethod(), yet the EventLog entries and other actions inside SomeMethod() are never created nor any of its actions taken. Any ideas?

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• Unit Testing Refcounted Critical Section Class

  - by BillyONeal

  Hello all :) I'm looking at a simple class I have to manage critical sections and locks, and I'd like to cover this with test cases. Does this make sense, and how would one go about doing it? It's difficult because the only way to verify the class works is to setup very complicated threading scenarios, and even then there's not a good way to test for a leak of a Critical Section in Win32. Is there a more direct way to make sure it's working correctly? Here's the code: CriticalSection.hpp: #pragma once #include <windows.h> namespace WindowsAPI { namespace Threading { class CriticalSection; class CriticalLock { std::size_t *instanceCount; CRITICAL_SECTION * criticalStructure; bool lockValid; friend class CriticalSection; CriticalLock(std::size_t *, CRITICAL_SECTION *, bool); public: bool IsValid() { return lockValid; }; void Unlock(); ~CriticalLock() { Unlock(); }; }; class CriticalSection { std::size_t *instanceCount; CRITICAL_SECTION * criticalStructure; public: CriticalSection(); CriticalSection(const CriticalSection&); CriticalSection& operator=(const CriticalSection&); CriticalSection& swap(CriticalSection&); ~CriticalSection(); CriticalLock Enter(); CriticalLock TryEnter(); }; }} CriticalSection.cpp: #include "CriticalSection.hpp" namespace WindowsAPI { namespace Threading { CriticalSection::CriticalSection() { criticalStructure = new CRITICAL_SECTION; instanceCount = new std::size_t; *instanceCount = 1; InitializeCriticalSection(criticalStructure); } CriticalSection::CriticalSection(const CriticalSection& other) { criticalStructure = other.criticalStructure; instanceCount = other.instanceCount; instanceCount++; } CriticalSection& CriticalSection::operator=(const CriticalSection& other) { CriticalSection copyOfOther(other); swap(copyOfOther); return *this; } CriticalSection& CriticalSection::swap(CriticalSection& other) { std::swap(other.instanceCount, instanceCount); std::swap(other.criticalStructure, other.criticalStructure); return *this; } CriticalSection::~CriticalSection() { if (!--(*instanceCount)) { DeleteCriticalSection(criticalStructure); delete criticalStructure; delete instanceCount; } } CriticalLock CriticalSection::Enter() { EnterCriticalSection(criticalStructure); (*instanceCount)++; return CriticalLock(instanceCount, criticalStructure, true); } CriticalLock CriticalSection::TryEnter() { bool lockAquired; if (TryEnterCriticalSection(criticalStructure)) { (*instanceCount)++; lockAquired = true; } else lockAquired = false; return CriticalLock(instanceCount, criticalStructure, lockAquired); } void CriticalLock::Unlock() { if (!lockValid) return; LeaveCriticalSection(criticalStructure); lockValid = false; if (!--(*instanceCount)) { DeleteCriticalSection(criticalStructure); delete criticalStructure; delete instanceCount; } } }}

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• I need an abstract field !

  - by Jules Olléon

  I know abstract fields do not exist in java. I also read this question but the solutions proposed won't solve my problem. Maybe there is no solution, but it's worth asking :) Problem I have an abstract class that does an operation in the constructor depending on the value of one of its fields. The problem is that the value of this field will change depending on the subclass. How can I do so that the operation is done on the value of the field redefined by the subclass ? If I just "override" the field in the subclass the operation is done on the value of the field in the abstract class. I'm open to any solution that would ensure that the operation will be done during the instantiation of the subclass (ie putting the operation in a method called by each subclass in the constructor is not a valid solution, because someone might extend the abstract class and forget to call the method). Also, I don't want to give the value of the field as an argument of the constructor. Is there any solution to do that, or should I just change my design ?

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• Workaround for basic syntax not being parsed.

  - by Mark Tomlin

  I want to have a class property that allow for an expression to take place on the right side of the equals sign. All versions of PHP choke on the following code, but it is written in this way to allow for easier extendibility in the future. /* Example SDK Class */ class SDK { /* Runtime Option Flags */ // Strings # 0: Makes no change to the strings. var $STRING_NONE = (1 << 0); # 1: Removes color codes from the string. var $STRING_STRIP_COLOR = (1 << 1); # 2: Removes language codes from the string. var $STRING_STRIP_LANG = (1 << 2); # 3: Removes all formatting from the string. var $STRING_STRIP = SELF::STRING_STRIP_COLOR & SELF::STRING_STRIP_LANG; # 4: Converts color codes to HTML & UTF-8. var $STRING_HTML = (1 << 3); # 8: Converts color codes to ECMA-48 escape color codes & UTF-8. var $STRING_CONSOLE = (1 << 4); # 16: Changes player names only. var $STRING_NAMES = (1 << 5); # 32: Changes host names only. var $STRING_HOSTS = (1 << 6); function SDK($fString = SELF::STRING_HTML & SELF::STRING_NAMES & SELF_HOST) { // constructor code. } } $SDK &= new SDK(SDK::STRING_NONE); (1 << 0) seems like very basic syntax to me, and is not fathomable why PHP would not allow for such a thing. Can anyone think of a work around that would maintain readability and future expandability of the following code?

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• Populate a form from SQL

  - by xrum

  Hi, I am trying to populate a web from from a SQL table. This is what I have right now, though I am not sure if it's the best way to do things, please give me suggestions: Public Class userDetails Public address1 As String Public address2 As String Public city As String ... ... ... End Class Public Class clsPerson 'set SQL connection Dim objFormat As New clsFormat Dim objConn As New clsConn() Dim connStr As String = objConn.getConn() Dim myConnection As New Data.SqlClient.SqlConnection(connStr) Public Function GetPersonDetails() As userDetails 'connection and all other good stuff here Try ' Execute the command myConnection.Open() dr = myCommand.ExecuteReader() ' Make sure a record was returned If dr.Read() Then ' Create and Populate ApplicantDetails userDetails.address1 = dr("address1") userDetails.address2 = objFormat.CheckNull(dr("address2")) userDetails.city = objFormat.CheckNull(dr("city")) .... Else Err.Raise(4938, "clsUser", "Error in GetUserDetails - User Not Found") End If dr.Close() Finally myConnection.Close() End Try Return userDetails End Function i then use GetPersonDetails() function in my backend to populate the form. like so: Dim userDetails as new userDetails userdetails = getPersonDetails() txtAddress.text = userdetails.address1 etc.... however, there are like 50 fields in the User db, and it seems like a lot of retyping... please help me find a better way to do this. Thank you!

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• I need to implement C# deep copy constructors with inheritance. What patterns are there to choose fr

  - by Tony Lambert

  I wish to implement a deepcopy of my classes hierarchy in C# public Class ParentObj : ICloneable { protected int myA; public virtual Object Clone () { ParentObj newObj = new ParentObj(); newObj.myA = theObj.MyA; return newObj; } } public Class ChildObj : ParentObj { protected int myB; public override Object Clone ( ) { Parent newObj = this.base.Clone(); newObj.myB = theObj.MyB; return newObj; } } This will not work as when Cloning the Child only a parent is new-ed. In my code some classes have large hierarchies. What is the recommended way of doing this? Cloning everything at each level without calling the base class seems wrong? There must be some neat solutions to this problem, what are they? Can I thank everyone for their answers. It was really interesting to see some of the approaches. I think it would be good if someone gave an example of a reflection answer for completeness. +1 awaiting!

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• In Ruby, how to implement 20 - point and point - 20 using coerce() ?

  - by Jian Lin

  In Ruby, the operation of point - 20 20 - point are to be implemented. But the following code: class Point attr_accessor :x, :y def initialize(x,y) @x, @y = x, y end def -(q) if (q.is_a? Fixnum) return Point.new(@x - q, @y - q) end Point.new(@x - q.x, @y - q.y) end def -@ Point.new(-@x, -@y) end def *(c) Point.new(@x * c, @y * c) end def coerce(something) [self, something] end end p = Point.new(100,100) q = Point.new(80,80) p (-p) p p - q p q - p p p * 3 p 5 * p p p - 30 p 30 - p Output: #<Point:0x2424e54 @x=-100, @y=-100> #<Point:0x2424dc8 @x=20, @y=20> #<Point:0x2424d3c @x=-20, @y=-20> #<Point:0x2424cc4 @x=300, @y=300> #<Point:0x2424c38 @x=500, @y=500> #<Point:0x2424bc0 @x=70, @y=70> #<Point:0x2424b20 @x=70, @y=70> 30 - p will actually be taken as p - 30 by the coerce function. Can it be made to work? I am actually surprise that the - method won't coerce the argument this way: class Fixnum def -(something) if (/* something is unknown class */) a, b = something.coerce(self) return -(a - b) # because we are doing a - b but we wanted b - a, so it is negated end end end that is, the function returns a negated version of a - b instead of just returning a - b.

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• With this generics code why am I getting "Argument 1: cannot convert from 'ToplogyLibrary.Relationsh

  - by Greg

  Hi, Any see why I'm getting a "Argument 1: cannot convert from 'ToplogyLibrary.RelationshipBase' to 'TRelationship'" in the code below, in CreateRelationship() ? public class TopologyBase<TKey, TNode, TRelationship> where TNode : NodeBase<TKey>, new() where TRelationship : RelationshipBase<TKey>, new() { // Properties public Dictionary<TKey, TNode> Nodes { get; private set; } public List<TRelationship> Relationships { get; private set; } // Constructors protected TopologyBase() { Nodes = new Dictionary<TKey, TNode>(); Relationships = new List<TRelationship>(); } // Methods public TNode CreateNode(TKey key) { var node = new TNode {Key = key}; Nodes.Add(node.Key, node); return node; } public void CreateRelationship(TNode parent, TNode child) { // Validation if (!Nodes.ContainsKey(parent.Key) || !Nodes.ContainsKey(child.Key)) { throw new ApplicationException("Can not create relationship as either parent or child was not in the graph: Parent:" + parent.Key + ", Child:" + child.Key); } // Add Relationship var r = new RelationshipBase<TNode>(); r.Parent = parent; r.Child = child; Relationships.Add(r); // *** HERE *** "Argument 1: cannot convert from 'ToplogyLibrary.RelationshipBase<TNode>' to 'TRelationship'" } } public class RelationshipBase<TNode> { public TNode Parent { get; set; } public TNode Child { get; set; } } public class NodeBase<T> { public T Key { get; set; } public NodeBase() { } public NodeBase(T key) { Key = key; } }

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