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• Add UITabBar Control!

  - by Taimur Hamza

  hi, I m stuck in a really simple problem. And i m afraid my question might annoy some people. The problem i am facing in short is that i want to add UITabBar Control to my iphone application other than the main screen. Let me explain, I have done everything successfully Added UItabbar control from IB in the main window's xib, added a variable at the back end , associated it by dragging the line. Also added a UIWindow variable and wrote these lines . [window addSubview:tabBarController.view]; [window makeKeyAndVisible]; when i launch the application a blank window appears and tab bar shows on its bottom. But the problem i dont want to add it to a particular window which is inside my app. Its no the first screen of my app. Its actually the 3rd screen of my app. Can anybody help ? thanks Taimur

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• Java variadic function parameters

  - by Amir Rachum

  Hi, I have a function that accepts a variable number of parameters: foo (Class... types); In which I get a certain number of class types. Next, I want to have a function bar( ?? ) That will accepts a variable number of parameters as well, and be able to verify that the variables are the same number (that's easy) and of the same types (the hard part) as was specified in foo. How can I do that? Edit: to clarify, a call could be: foo (String.class, Int.class); bar ("aaa", 32); // OK! bar (3); // ERROR! bar ("aa" , "bb"); //ERROR! Also, foo and bar are methods of the same class.

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• After playing a MediaElement, how can I play it again?

  - by Edward Tanguay

  I have a variable MediaElement variable named TestAudio in my Silverlight app. When I click the button, it plays the audio correctly. But when I click the button again, it does not play the audio. How can I make the MediaElement play a second time? None of the tries below to put position back to 0 worked: private void Button_Click_PlayTest(object sender, RoutedEventArgs e) { //TestAudio.Position = new TimeSpan(0, 0, 0); //TestAudio.Position = TestAudio.Position.Add(new TimeSpan(0, 0, 0)); //TestAudio.Position = new TimeSpan(0, 0, 0, 0, 0); //TestAudio.Position = TimeSpan.Zero; TestAudio.Play(); }

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• Value Comparison with a multivalued column in SQL Database Table

  - by Rishabh Ohri

  Hi All, Suppose there is a table A which has a column AccessRights which is multivalued( Eg of values in it in this format STOLI,HELP,BRANCH(comma separated string) Now a stored procedure is written against this table to fetch records based on a AccessRight parameter sent to the SP. Let that parameter be @AccessRights, this is also a comma separated string which may have a value like STOLI,BRANCH,HELPLINE etc Now I want to compare individual values from the parameter @AccessRights with the column AccessRights. Current Approach is I split the Comma Separated string(@AccessRights) using a User Defined Function Split. And I get Individual values in a Table variable(Contains only one column "accessGroup"), the individual values are in a Table variable under the column name accessGroup and I use following code in the SP for comparison Where AccessRights like '%'+accessGroup+'%' Now if the user passes the parameter (HELP, OLI) instead of( HELP,STOLI) the SP will give the output. What should be done for comparison so that that subststring OLI does not give the output for STOLI

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• Conditional Images in mail merge

  - by datatoo

  A previous answer suggested here leads me to the conclusion I can merge images, but without control of the datasource how can I make the image different based upon a field condition? For instance if the customer is Canadian the logo will be one thing, if US it will be another. There are actually account groupings and the parent companies have different assigned responses. I need to make conditional merges based upon the data I am receiving.

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• How can I determine in silverlight code where the silverlight instance is running?

  - by Edward Tanguay

  I have a silverlight app. When I develop I have it pick up its data from a local URL: http://localhost/theapp/data/... however, when it is online, I want it to pick up its data from an online URL: http://www.tanguay.info/... Currently I have a variable which I switch before I compile and upload: bool silverlightAppIsLive = true; which I use to determine whether or not to get data from the first or second URL above. Is there a way for me to determine this automatically in code without setting the variable manually?

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• Ruby equivalent of PHP's fopen() method

  - by lagrz

  I'm trying to find out if Ruby has en equivalent of php's fopen() method currently used like this: $fd = fopen("php://stdin", "r"); would that be using ARGV variable? Basically what I plan on doing is forward raw e-mail messages using the .procmailrc file which I already got working in a test php file, but the project requires the use of Ruby. Therefore I'm not 100% sure if using the ARGV variable would work or if somehow I need to capture the e-mail stream by some other means. Any help would be greatly appreciated. Thanks :)

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• How to merge two different Makefiles?

  - by martijnn2008

  I have did some reading on "Merging Makefiles", one suggest I should leave the two Makefiles separate in different folders [1]. For me this look counter intuitive, because I have the following situation: I have 3 source files (main.cpp flexibility.cpp constraints.cpp) one of them (flexibility.cpp) is making use of the COIN-OR Linear Programming library (Clp) When installing this library on my computer it makes sample Makefiles, which I have adjust the Makefile and it currently makes a good working binary. # Copyright (C) 2006 International Business Machines and others. # All Rights Reserved. # This file is distributed under the Eclipse Public License. # $Id: Makefile.in 726 2006-04-17 04:16:00Z andreasw $ ########################################################################## # You can modify this example makefile to fit for your own program. # # Usually, you only need to change the five CHANGEME entries below. # ########################################################################## # To compile other examples, either changed the following line, or # add the argument DRIVER=problem_name to make DRIVER = main # CHANGEME: This should be the name of your executable EXE = clp # CHANGEME: Here is the name of all object files corresponding to the source # code that you wrote in order to define the problem statement OBJS = $(DRIVER).o constraints.o flexibility.o # CHANGEME: Additional libraries ADDLIBS = # CHANGEME: Additional flags for compilation (e.g., include flags) ADDINCFLAGS = # CHANGEME: Directory to the sources for the (example) problem definition # files SRCDIR = . ########################################################################## # Usually, you don't have to change anything below. Note that if you # # change certain compiler options, you might have to recompile the # # COIN package. # ########################################################################## COIN_HAS_PKGCONFIG = TRUE COIN_CXX_IS_CL = #TRUE COIN_HAS_SAMPLE = TRUE COIN_HAS_NETLIB = #TRUE # C++ Compiler command CXX = g++ # C++ Compiler options CXXFLAGS = -O3 -pipe -DNDEBUG -pedantic-errors -Wparentheses -Wreturn-type -Wcast-qual -Wall -Wpointer-arith -Wwrite-strings -Wconversion -Wno-unknown-pragmas -Wno-long-long -DCLP_BUILD # additional C++ Compiler options for linking CXXLINKFLAGS = -Wl,--rpath -Wl,/home/martijn/Downloads/COIN/coin-Clp/lib # C Compiler command CC = gcc # C Compiler options CFLAGS = -O3 -pipe -DNDEBUG -pedantic-errors -Wimplicit -Wparentheses -Wsequence-point -Wreturn-type -Wcast-qual -Wall -Wno-unknown-pragmas -Wno-long-long -DCLP_BUILD # Sample data directory ifeq ($(COIN_HAS_SAMPLE), TRUE) ifeq ($(COIN_HAS_PKGCONFIG), TRUE) CXXFLAGS += -DSAMPLEDIR=\"`PKG_CONFIG_PATH=/home/martijn/Downloads/COIN/coin-Clp/lib64/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/lib/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/share/pkgconfig: pkg-config --variable=datadir coindatasample`\" CFLAGS += -DSAMPLEDIR=\"`PKG_CONFIG_PATH=/home/martijn/Downloads/COIN/coin-Clp/lib64/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/lib/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/share/pkgconfig: pkg-config --variable=datadir coindatasample`\" else CXXFLAGS += -DSAMPLEDIR=\"\" CFLAGS += -DSAMPLEDIR=\"\" endif endif # Netlib data directory ifeq ($(COIN_HAS_NETLIB), TRUE) ifeq ($(COIN_HAS_PKGCONFIG), TRUE) CXXFLAGS += -DNETLIBDIR=\"`PKG_CONFIG_PATH=/home/martijn/Downloads/COIN/coin-Clp/lib64/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/lib/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/share/pkgconfig: pkg-config --variable=datadir coindatanetlib`\" CFLAGS += -DNETLIBDIR=\"`PKG_CONFIG_PATH=/home/martijn/Downloads/COIN/coin-Clp/lib64/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/lib/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/share/pkgconfig: pkg-config --variable=datadir coindatanetlib`\" else CXXFLAGS += -DNETLIBDIR=\"\" CFLAGS += -DNETLIBDIR=\"\" endif endif # Include directories (we use the CYGPATH_W variables to allow compilation with Windows compilers) ifeq ($(COIN_HAS_PKGCONFIG), TRUE) INCL = `PKG_CONFIG_PATH=/home/martijn/Downloads/COIN/coin-Clp/lib64/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/lib/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/share/pkgconfig: pkg-config --cflags clp` else INCL = endif INCL += $(ADDINCFLAGS) # Linker flags ifeq ($(COIN_HAS_PKGCONFIG), TRUE) LIBS = `PKG_CONFIG_PATH=/home/martijn/Downloads/COIN/coin-Clp/lib64/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/lib/pkgconfig:/home/martijn/Downloads/COIN/coin-Clp/share/pkgconfig: pkg-config --libs clp` else ifeq ($(COIN_CXX_IS_CL), TRUE) LIBS = -link -libpath:`$(CYGPATH_W) /home/martijn/Downloads/COIN/coin-Clp/lib` libClp.lib else LIBS = -L/home/martijn/Downloads/COIN/coin-Clp/lib -lClp endif endif # The following is necessary under cygwin, if native compilers are used CYGPATH_W = echo # Here we list all possible generated objects or executables to delete them CLEANFILES = clp \ main.o \ flexibility.o \ constraints.o \ all: $(EXE) .SUFFIXES: .cpp .c .o .obj $(EXE): $(OBJS) bla=;\ for file in $(OBJS); do bla="$$bla `$(CYGPATH_W) $$file`"; done; \ $(CXX) $(CXXLINKFLAGS) $(CXXFLAGS) -o $@ $$bla $(LIBS) $(ADDLIBS) clean: rm -rf $(CLEANFILES) .cpp.o: $(CXX) $(CXXFLAGS) $(INCL) -c -o $@ `test -f '$<' || echo '$(SRCDIR)/'`$< .cpp.obj: $(CXX) $(CXXFLAGS) $(INCL) -c -o $@ `if test -f '$<'; then $(CYGPATH_W) '$<'; else $(CYGPATH_W) '$(SRCDIR)/$<'; fi` .c.o: $(CC) $(CFLAGS) $(INCL) -c -o $@ `test -f '$<' || echo '$(SRCDIR)/'`$< .c.obj: $(CC) $(CFLAGS) $(INCL) -c -o $@ `if test -f '$<'; then $(CYGPATH_W) '$<'; else $(CYGPATH_W) '$(SRCDIR)/$<'; fi` The other Makefile compiles a lot of code and makes use of bison and flex. This one is also made by someone else. I am able to alter this Makefile when I want to add some code. This Makefile also makes a binary. CFLAGS=-Wall LDLIBS=-LC:/GnuWin32/lib -lfl -lm LSOURCES=lex.l YSOURCES=grammar.ypp CSOURCES=debug.cpp esta_plus.cpp heap.cpp main.cpp stjn.cpp timing.cpp tmsp.cpp token.cpp chaining.cpp flexibility.cpp exceptions.cpp HSOURCES=$(CSOURCES:.cpp=.h) includes.h OBJECTS=$(LSOURCES:.l=.o) $(YSOURCES:.ypp=.tab.o) $(CSOURCES:.cpp=.o) all: solver solver: CFLAGS+=-g -O0 -DDEBUG solver: $(OBJECTS) main.o debug.o g++ $(CFLAGS) -o $@ $^ $(LDLIBS) solver.release: CFLAGS+=-O5 solver.release: $(OBJECTS) main.o g++ $(CFLAGS) -o $@ $^ $(LDLIBS) %.o: %.cpp g++ -c $(CFLAGS) -o $@ $< lex.cpp: lex.l grammar.tab.cpp grammar.tab.hpp flex -o$@ $< %.tab.cpp %.tab.hpp: %.ypp bison --verbose -d $< ifneq ($(LSOURCES),) $(LSOURCES:.l=.cpp): $(YSOURCES:.y=.tab.h) endif -include $(OBJECTS:.o=.d) clean: rm -f $(OBJECTS) $(OBJECTS:.o=.d) $(YSOURCES:.ypp=.tab.cpp) $(YSOURCES:.ypp=.tab.hpp) $(YSOURCES:.ypp=.output) $(LSOURCES:.l=.cpp) solver solver.release 2>/dev/null .PHONY: all clean debug release Both of these Makefiles are, for me, hard to understand. I don't know what they exactly do. What I want is to merge the two of them so I get only one binary. The code compiled in the second Makefile should be the result. I want to add flexibility.cpp and constraints.cpp to the second Makefile, but when I do. I get the problem following problem: flexibility.h:4:26: fatal error: ClpSimplex.hpp: No such file or directory #include "ClpSimplex.hpp" So the compiler can't find the Clp library. I also tried to copy-paste more code from the first Makefile into the second, but it still gives me that same error. Q: Can you please help me with merging the two makefiles or pointing out a more elegant way? Q: In this case is it indeed better to merge the two Makefiles? I also tried to use cmake, but I gave upon that one quickly, because I don't know much about flex and bison.

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• string comparison xslt sheet

  - by dbomb101

  I am trying to compare a value which was grabbed using the get method in a form and then passed into a xslt sheet. I named the string variable passed in browse. I want to check if the variable browse has a string value browse. the code is below <xsl:if test="$browse = 'browse' "> <A> <xsl:attribute name="href">searchPage.php?search=<xsl:value-of select="$search" />&amp;browseButton=Browse&amp;XML=Xml&amp;page=<xsl:value-of select="number($Page)-1"/>&amp;pagesize=<xsl:value-of select="$PageSize"/></xsl:attribute> &lt;&lt;Prev </A> </xsl:if>

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• how to use found_rows in oracle package to avoid two queries

  - by Omnipresent

  I made a package which I can use like this: select * from table(my_package.my_function(99, 'something, something2', 1, 50)) I make use of the package in a stored procedure. Sample stored procedure looks like: insert into something values(...) from (select * from table(my_package.my_function(99, 'something, something2', 1, 50))) a other_table b where b.something1 = a.something1; open cv_1 for select count(*) from table(my_package.my_function(99, 'something, something2', 1, 50)) So I am calling the same package twice. first time to match records with other tables and other stuff and second time to get the count. Is there a way to get the count first time around and put it into a variable and second time around I just pick that variable rather than calling the whole query again? Hope it makes sense.

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• Racket: change dotted pair to list

  - by user2963128

  I have a program that recursively calls a hashtable and prints out data from it. Unfortunately my hashtable seems to be saving data as dotted pairs so when I call the hashtable I get an error saying that there is no data for it because its tryign to search the hashtable for a dotted pair instead of a list. Is there an easy way to make the dotted pair into a regular list? IE im getting '("was" . "beginning") instead of '("was" "beginning") Is there a way to change this without re-writing how my hashtable store stuff? im using the let function to set a variable to this and then calling another function based on this variable (let ((data ( list-ref(hash-ref Ngram-table key) (random (length (hash-ref Ngram-table key)))))) is there a way to make the value stored in data just a list like this '("var1" "var2") instead of a dotted pair? edit: im getting dotted pairs because im using let to set data to the part of the hashtable's key and one of the elements in that hash.

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• Determining whether values can potentially match a regular expression, given more input

  - by Andreas Grech

  I am currently writing an application in JavaScript where I'm matching input to regular expressions, but I also need to find a way how to match strings to parts of the regular expressions. For example: var invalid = "x", potentially = "g", valid = "ggg", gReg = /^ggg$/; gReg.test(invalid); //returns false (correct) gReg.test(valid); //returns true (correct) Now I need to find a way to somehow determine that the value of the potentially variable doesn't exactly match the /^ggg$/ expression, BUT with more input, it potentially can! So for example in this case, the potentially variable is g, but if two more g's are appended to it, it will match the regular expression /^ggg$/ But in the case of invalid, it can never match the /^ggg$/ expression, no matter how many characters you append to it. So how can I determine if a string has or doesn't have potential to match a particular regular expression?

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• [PHP] Difference between normal and magic setters and getters

  - by Saif Bechan

  I am using a magic getter/setter class for my session variables, but I don't see any difference between normal setters and getters. The code: class session { public function __set($name, $value) { $_SESSION[$name] = $value; } public function __unset($name) { unset($_SESSION[$name]); } public function __get($name) { if(isset($_SESSION[$name])) { return $_SESSION[$name]; } } } Now the first thing I noticed is that I have to call $session->_unset('var_name') to remove the variable, nothing 'magical' about that. Secondly when I try to use $session->some_var this does not work. I can only get the session variable using $_SESSION['some_var']. I have looked at the PHP manual but the functions look the same as mine. Am I doing something wrong, or is there not really anything magic about these functions.

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• IA-32: Pushing a byte onto a stack isn't possible on Pentium, why?

  - by Tim Green

  Hi, I've come to learn that you cannot push a byte directly onto the Intel Pentium's stack, can anyone explain this to me please? The reason that I've been given is because the esp register is word-addressable (or, that is the assumption in our model) and it must be an "even address". I would have assumed decrementing the value of some 32-bit binary number wouldn't mess with the alignment of the register, but apparently I don't understand enough. I have tried some NASM tests and come up that if I declare a variable (bite db 123) and push it on to the stack, esp is decremented by 4 (indicating that it pushed 32-bits?). But, "push byte bite" (sorry for my choice of variable names) will result in a kind error: test.asm:10: error: Unsupported non-32-bit ELF relocation Any words of wisdom would be greatly appreciated during this troubled time. I am first year undergraduate so sorry for my naivety in any of this. Tim

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• How to check if Emacs is in GUI mode (and execute `tool-bar-mode` only then)?

  - by dehmann

  I have this line in my .emacs file: (tool-bar-mode 0) because I hate the toolbars in my GUI emacs (/Applications/Emacs.app/Contents/MacOS/Emacs). But when I start up my other, text-based emacs in the terminal (/opt/local/bin/emacs) it complains about that command: Symbol's function definition is void: tool-bar-mode How can I add an if condition so that it executes the tool-bar-mode command only when I'm in the GUI emacs? Thanks!

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• What does this xkcd code do?

  - by cobbal

  On the xkcd site today, the following appeared as a joke in a <script language="scheme"> tag so what does the following code do / represent? (define (eval exp env) (cond ((self-evaluating? exp) exp) ((variable? exp) (lookup-variable-value exp env)) ((quoted? exp) (text-of-quotation exp)) ((assignment? exp) (eval-assignment exp env)) ((definition? exp) (eval-definition exp env)) ((if? exp) (eval-if exp env)) ((lambda? exp) (make-procedure (lambda-parameters exp) (lambda-body exp) env)) ((begin? exp) (eval-sequence (begin-actions exp) env)) ((cond? exp) (eval (cond->if exp) env)) ((application? exp) (apply (eval (operator exp) env) (list-of-values (operands exp) env))) (else (error "Common Lisp or Netscape Navigator 4.0+ Required" exp))))

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• iPhone SDK - Comparing characters in string

  - by Karl Daniel

  Basically what I'm trying to do is compare 2 strings one from a plist and one from the user's input. I use a while loop to step through each character and compare it and if true then I increase an integer then once the loop has finished I work out the percentage correct / similarity of the plist answer and the user's answer. I seem to be having a problem however as the only return I'm getting is 0. Below is the code I'm using... The code below is all functioning and the question no longer requires answering... Working code... answerLength = boxAnswer.length; //Gets number of characters of first string. plistLength = plistAnswer.length; //Gets number of characters of second string. characterRange = 0; //Sets the variable for which character to look at. charactersCorrect = 0; //Sets the variable of number of matching characters. unichar answerCharacter; //Declares a unichar for the first string. unichar plistCharacter; //Declares a unichar for the second string. while (answerLength > 0 && plistLength > 0) { answerCharacter = [boxAnswer characterAtIndex:characterRange]; //Gets character of first string at the index of the range integer. plistCharacter = [plistAnswer characterAtIndex:characterRange]; //Gets character of second string at the index of the range integer. answerLength--; //Reduces number of characters left to compare. plistLength--; characterRange++; //Increases integer to tell it to look at next character in string. if (answerCharacter == plistCharacter) { //Checks to see if character of first string and character of second string match. charactersCorrect++; //If true increases the number correct. } } //Works out percentage of matching characters out of the total string. totalChar = plistAnswer.length; totalPercentage = (charactersCorrect/totalChar)*100; percentageCorrect.text = [NSString stringWithFormat:@"%i%%",totalPercentage]; Variable Declarations... int answerLength; int plistLength; int characterRange; double totalChar; double charactersCorrect; int totalPercentage;

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• Regarding Multiple Tab-Class

  - by Christine

  Hi! I've problem regarding GUI with one Menu and one Order Class. I've created a variable to store how many items have been selected in the Menu Class. private int totalSelected; The var totalSelected is live updated. It can be changed anytime depending on actionPerformed() function.(Exp: totalSelected will add up all the selected items) In the Order Class, how can I access to the live update variable totalSelected in order to retrieve the live update value? When I invoke getTotalSelected() function inside the Menu Class, I will only obtain a 0 value. Thanks for your help ^^!

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• Track http domain referer

  - by tony noriega

  Can i track the http referer with javascript, and append a variable to the URL string to store into a dbase? or could i track a cookie that the user gets? (very layman's terms here, sorry) if http referrer is domain.com add to url '&referer=google' which should stay with them during their session. OR when a user clicks my Google adwords ad. they get a cookie with a referring domain in it. try to read that cookie, and append the same variable. any thoughts?

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• Dynamically creating controls in MFC (Collection question)

  - by ProgramWriter

  Hello all, I have some custom control inside of which i should create radiobuttons or checkboxes. The count of child controls is available only at runtime (it loads some file from which it gets this count). So i need to create variable number of controls. Which collection i should use for this purpose? Solution 1: simply use std::vector (or CArray) - not suitable because i want use MFC (CButton). Of course i can Attach() and later Detach() handle to window each time i need this window, but it will give big overhead. Solution 2: use std::vector or CArray or CList or... In this case i take care about making 'new' and appropriate 'delete' when control is unneeded. I am forgetful :) MFC handle map contains pointer to CButton and i can't use simple CArray, because it will move my objects each time when his size will grow. ... and the question is: Which collection i should use for containing variable count of MFC control classes?

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• The Benefits of Constants

  - by onaclov2000

  I understand one of the big deals about constants is that you don't have to go through and update code where that constant is used all over the place. Thats great, but let's say you don't explicitly declare it as a constant. What benefit(s) exist(s) to take a variable that HAPPENS to actually not be changed and make it a constant, will this save on processing, and/or size of code...etc? Basically I have a program that the compiler is saying that a particular variable is not changed and thus can be declared a constant, I just wanted to know what the benefit to adding the constant qualifier to it would be, if it makes no difference then making that change adds no value and thus no point wasting time (this same scenario occurs in more then one place) going back and "fixing" all these variables. Thank you, onaclov

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• How to test custom template tags in Django?

  - by Mark Lavin

  I'm adding a set of template tags to a Django application and I'm not sure how to test them. I've used them in my templates and they seem to be working but I was looking for something more formal. The main logic is done in the models/model managers and has been tested. The tags simply retrieve data and store it in a context variable such as {% views_for_object widget as views %} """ Retrieves the number of views and stores them in a context variable. """ # or {% most_viewed_for_model main.model_name as viewed_models %} """ Retrieves the ViewTrackers for the most viewed instances of the given model. """ So my question is do you typically test your template tags and if you do how do you do it?

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• jaxb XmlAccessType: PROPERTY example

  - by Bjorn J

  I'm trying to use jaxb and want to use the 'XmlAccessType.PROPERTY' to let jaxb use getters/setters rather than variable directly, but get different errors depending on what I try, or the variable isn't set at all like I want. Any good link or pointer to a simple example? For example, the below makes the groupDefintion not to be set when parsing the xml document: @XmlAccessorType(javax.xml.bind.annotation.XmlAccessType.PROPERTY) public class E { private EGroup groupDefinition; public EGroup getGroupDefinition () { return groupDefinition; } @XmlAttribute public void setGroupDefinition (EGroup g) { groupDefinition = g; } }

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• Capistrano configuration

  - by Eli

  I'm having some issues with variable scope with the capistrano-ext gem's multistage module. I currently have, in config/deploy/staging.rb. set(:settings) { YAML.load_file("config/deploy.yml")['staging'] } set :repository, settings["repository"] set :deploy_to, settings["deploy_to"] set :branch, settings["branch"] set :domain, settings["domain"] set :user, settings["user"] role :app, domain role :web, domain role :db, domain, :primary => true My config/deploy/production.rb file is similar. This doesn't seem very DRY. Ideally, I think I'd like everything to be in the deploy.rb file. If there were a variable set with the current stage, everything would be really clean. UPDATE: I found a solution. I defined this function in deploy.rb: def set_settings(params) params.each_pair do |k,v| set k.to_sym, v end if exists? :domain role :app, domain role :web, domain role :db, domain, :primary => true end end Then my staging.rb file is just set_settings(YAML.load_file("config/deploy.yml")['staging'])

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• C# -Closure -Clarification

  - by nettguy

  I am learning C#.Can I mean closure as a construct that can adopt the changes in the environment in which it is defined. Example : List<Person> gurus = new List<Person>() { new Person{id=1,Name="Jon Skeet"}, new Person{id=2,Name="Marc Gravell"}, new Person{id=3,Name="Lasse"} }; void FindPersonByID(int id) { gurus.FindAll(delegate(Person x) { return x.id == id; }); } The variable id is declared in the scope of FindPersonByID() but t we still can access the local variable id inside the anonymous function (i.e) delegate(Person x) { return x.id == id; } (1) Is my understanding of closure is correct ? (2) What are the aditional advantages can we get from closures?

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