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• Where does static variable work in C# page. At Application level or Page Level

  - by Shantanu Gupta

  I had an interview today and every thing was going very good, but then an interviewer asked me a question Where Does Static Variable Work in C#- At Application Level or At Page Level. I was not very much clear about this answer as I only knew that static variables are stored on heap and I didn't knew anything about web related thing about it. Then tried to make me more clear by giving an example that in a page I am using static variable and three users are accessing the page one of the user updates the value of static variable, What value will be visible to remaining two users an old copy or the update will be reflected.

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• Problem with increment in inline ARM assembly

  - by tech74

  Hi , i have the following bit of inline ARM assembly, it works in a debug build but crashes in a release build of iphone sdk 3.1. The problem is the add instructions where i am incrementing the address of the C variables output and x by 4 bytes, this is supposed to increment by the size of a float. I think when i increment at some such stage i am overwriting something, can anyone say which is the best way to handle this Thanks C code that the asm is replacing, sum,output and x are all floats for(int i = 0; i< count; i++) sum+= output[i]* (*x++) asm volatile( ".align 4 \n\t" "mov r4,%3 \n\t" "flds s0,[%0] \n\t" "0: \n\t" "flds s1,[%2] \n\t" //"add %3,%3,#4 \n\t" "flds s2,[%1] \n\t" //"add %2,%2,#4 \n\t" "subs r4,r4, #1 \n\t" "fmacs s0, s1, s2 \n\t" "bne 0b \n\t" "fsts s0,[%0] \n\t" : : "r" (&sum), "r" (output), "r" (x),"r" (count) : "r0","r4","cc", "memory", "s0","s1","s2" );

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• C string program

  - by mrblippy

  Hi, i have been given a task to do ar school that must read three strings in, store the third string in dynamically allocated memory and print out the last 4 letters of the first word alphabetically. Here is the program i have so far but the strings are all stored in different variables, making them hard to sort. if anyone could give me a hand and help me finish this program i would be very grateful. thanks #include <stdio.h> #include <stdlib.h> #include <string.h> int main() { char word1[101]; char word2[101]; char* word3; char buffer[101]; scanf("%s", word1); scanf("%s", word2); scanf("%s", buffer); word3 = (char *) malloc(strlen(buffer)+1); strcpy(word3, buffer); return 0; }

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• Stopping and Starting Apache Using PHP (!)

  - by Abs

  Hello all, I have two problems which are related. 1) I have a batch file that contains this: net stop wampapache net start wampapache Which tries to stop and start my wamp server. When I double click the stop.bat file with the above it works successfully. When I try to run that from my PHP script, it stops the server but doesn't start it fully which I am guessing is because Apache is waiting for that PHP process to exit? function php_kill(){ exec('stop.bat', $output = array(), $return); return $return; } 2) Is there a way to restart my webserver (apache) whilst keeping session variables that PHP needs available? Thanks all

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• variable=@value@ in Makefiles

  - by user1447110

  I understand that @ suppresses printing of a command in a Makefile... http://www.gnu.org/software/make/manual/make.html#Echoing ... and I understand that $@ is the target name... http://www.gnu.org/software/make/manual/make.html#Automatic-Variables ... but I can't find any information on what a line like this might mean: variable=@value@ I'm not trying to fix anything here, just trying to better understand Makefiles. Update: The "Makefile Subsitutions" section of the GNU autoconf manual explains that it's a value that is substituted by autoconf.

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• What is the explanation for "warning: assuming that the loop is not infinite"

  - by James Morris

  I had just taken the decision to change as many variables from unsigned to int and upon recompiling the code in question, was greeted by this warning message: freespace_state.c:203: warning: assuming that the loop is not infinite The line in question: for (x = startx; x <= endx; ++x, ++xptr) This loop is 60 lines of code (inc white space/brackets etc), and has a goto within it, and at least one occurrence of continue. In this case, I think I am appreciative that GCC is assuming this loop is not infinite, because, it should never loop indefinitely. What is GCC trying to tell me here?

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• How is Magento using the module_name tag elements in the module config file

  - by zokibtmkd

  I found here that Magento is using these tags as custom config variables, but I still cannot understand where are they used and how. For example the Wishlist module has wishlist (same name as the module) xml tag in the config.xml file in which it defines: <item> <product_attributes> <visibility/> <url_path/> <url_key/> </product_attributes> </item> Where is this module using these configurations? Also if I was to build payment method, I have to add in my custom module config.xml a tag for sales and then for quote and so on... I also found other related questions, but most of the answers were that these tags can be anything, but I need to know how they are used by the system. Thank you in advance

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• making a programming language

  - by None

  I was wondering which way would create a faster programming language, because I have tried both. Writing code that takes the text, splits it by whitespace or newlines or something, then processes each line and has a dictionary for variables. Or writing code that takes text and converts it to another programming language. This is an example of how a very simple version of the first way would be programmed in python: def run(code): text = code.split(";") for t in text: if t == "hello": print "hi" second: def run(code): rcode = "" text = code.split(";") for t in text: if t == "hello": rcode += "print 'hi'"

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• How to convert dates to numbers in Matlab

  - by user1297712

  I have some variables like these: a(1)=00:26:00 a(2)=744:32:00 a(3)=8040:33:00 I want to convert them to numbers, so I use the datenum command. The biggest number should be 8040:33:00, but look what happens. datenum(a([1 2 3])) ans = 1.0e+005 * 7.3487 7.3485 7.3486 But if I don´t calculate a(1): datenum(a([2 3],51)) ans = 1.0e+005 * 7.3490 7.3520 That´s the results that I want to get. I think that the problem is that a(2) and a(3) have more than 24hours but I haven´t found any way to solve this problem. Thanks.

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• Does C++ require a destructor call for each placement new?

  - by Josh Haberman

  I understand that placement new calls are usually matched with explicit calls to the destructor. My question is: if I have no need for a destructor (no code to put there, and no member variables that have destructors) can I safely skip the explicit destructor call? Here is my use case: I want to write C++ bindings for a C API. In the C API many objects are accessible only by pointer. Instead of creating a wrapper object that contains a single pointer (which is wasteful and semantically confusing). I want to use placement new to construct an object at the address of the C object. The C++ object will do nothing in its constructor or destructor, and its methods will do nothing but delegate to the C methods. The C++ object will contain no virtual methods. I have two parts to this question. Is there any reason why this idea will not work in practice on any production compiler? Does this technically violate the C++ language spec?

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• How to input test data using the DecisionTree module in python?

  - by lifera1n

  On the Python DescisionTree module homepage (DecisionTree-1.6.1), they give a piece of example code. Here it is: dt = DecisionTree( training_datafile = "training.dat", debug1 = 1 ) dt.get_training_data() dt.show_training_data() root_node = dt.construct_decision_tree_classifier() root_node.display_decision_tree(" ") test_sample = ['exercising=>never', 'smoking=>heavy', 'fatIntake=>heavy', 'videoAddiction=>heavy'] classification = dt.classify(root_node, test_sample) print "Classification: ", classification My question is: How can I specify sample data (test_sample here) from variables? On the project homepage, it says: "You classify new data by first constructing a new data vector:" I have searched around but have been unable to find out what a data vector is or the answer to my question. Any help would be appreciated!

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• How can I get Weblogic to connect to a RedBrick database?

  - by Scott

  I am trying to get Weblogic 9.2.3 to talk to a legacy RedBrick database and am having trouble. I have the redbrick.jar file from the software installation and have added to my APP_RUNTIME_CLASSPATH and my MANIFEST_CLASSPATH. This is my jConnect template line: <url>jdbc:rbw:protocol:${DB_LT_SERVER}:${DB_LT_PORT}/${DB_LT_NAME}</url> <driver-name>redbrick.jdbc.RBWDriver</driver-name> (Variables get replaced with good values during build.) When starting up I get this error: weblogic.common.ResourceException: Unknown Data Source jConnectLT weblogic.common.resourcepool.ResourceSystemException: Cannot load driver class: redbrick.jdbc.RBWDriver Do I have to do more to make Weblogic see the RedBrick database? Thanks for any tips or pointers.

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• Are there any pitfalls to having two different Models from two different assemblies? (EF)

  - by Jonn

  I have two projects, both of them data access layers, and both using EF. I have another project calling services related to the two different assemblies. Are there any pitfalls on using two different models on two different databases linked to the same database? I'm asking this because I've been getting this generic "EntitySqlException" could not be resolved in the current scope or context. Make sure that all referenced variables are in scope, that required schemas are loaded, and that namespaces are referenced correctly., near escaped identifier. that does not appear when are run separately but appear when under the same project.

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• What is the difference between an object's scope and it's context in javascript?

  - by DKinzer

  In the vernacular, scope and context have a lot in common. Which is why I get confused when I read references to both, such as in the quote below from an article on closures: Scope refers to where variables and functions are accessible, and in what context it is being executed. (@robertnyman) As far as I can tell, context is just a reference to an object. Can someone please explain what exactly is context, as used, for instance, in the jQuery syntax, $(selector, context). And is an object's scope the same at it's context?

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• Casting Class into String and Vice Versa in JAVA

  - by topgun_ivard

  I have a program in which I need to store a Class object into memory by casting it into String. Is it possible to convert the String back into the original Class so that I can use that class variables? I am doing this in JAVA. Example: test.java class hello{ public String h1; public String h2; } public class test { public static void main(String[] args) { hello h = new hello(); h.h1 = "hello"; h.h2 = "world"; String s = h.toString(); System.out.println("Print s : "+s); // Now I need to convert String s into type hello so that // I can do this: // (hello)s.h1; // (hello)s.h2; } } NOTE: this is not a homework, this is a personal project and I would be grateful if anyone can help! Thanks! Ivar

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• PHP export to text file - Only saving first line.

  - by wertz8090

  I'm trying to export some extracted $_POST information into a text file, however my code is only capturing the first variable and ignoring the rest. I'm saving the information to the text file in this manner: $values = "First Name: $fName\r\n"; $values .= "Last Name: $lName\r\n"; $values .= "Address: $address\r\n"; etc. This is the code I use to write to the text file: $fp = @fopen("person.data", "w") or die("Couldn't open person.data for writing!"); $numBytes = @fwrite($fp, $values) or die("Couldn't write values to file!"); @fclose($fp); Any ideas on why it would only save the first $values ($fName) variable but not the rest of them? It actually saves the first part of the $values string for all of them (so I see Last Name:, Address:, etc. on separate lines in the text file) but the called variables $lName and $address do not appear.

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• PHP Extract Values From One String Based on a Pattern Defined in Another

  - by ironkeith

  I have two strings: $first = '/this/is/a/string'; $second = '/this/:param1/a/:param2'; And I'm trying to get this: $params = array('param1' => 'is', 'param2' => 'string'); But getting from point a to b is proving more than my tired brain can handle at the moment. Anything starting with a ':' in the second string defines a variable name/position. There can be any number of variables in $second which need to be extracted from $first. Segments are separated by a '/'. Thanks.

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• Why is 'using namespace std;' considered a bad practice in C++?

  - by Mana

  Okay, sorry for the simplistic question, but this has been bugging me ever since I finished high school C++ last year. I've been told by others on numerous occasions that my teacher was wrong in saying that we should have "using namespace std;" in our programs, and that std::cout and std::cin are more proper. However, they would always be vague as to why this is a bad practice. So, I'm asking now: Why is "using namespace std;" considered bad? Is it really that inefficient, or risk declaring ambiguous vars(variables that share the same name as a function in std namespace) that much? Or does this impact program performance noticeably as you get into writing larger applications? I'm sorry if this is something I should have googled to solve; I figured it would be nice to have this question on here regardless in case anyone else was wondering.

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• PHP split string into integer element and string

  - by David19801

  Hello, I have a string say: Order_num = "0982asdlkj" How can I split that into the 2 variables, with the number element and then another variable with the letter element in php? The number element can be any length from 1 to 4 say and the letter element fills the rest to make every order_num 10 characters long in total. I have found the php explode function...but don't know how to make it in my case because the number of numbers is between 1 and 4 and the letters are random after that, so no way to split at a particular letter. Please help as specifically as possible!

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• Writing complex records to file

  - by DrSobhani

  Hi I have defined some records in my project which may be consisted of other records and also dynamic arrays of normal data types and other records , it is n example of a record type Type1=record x:integer; end; Type2=record Y:array of X; str:string; end; When I tried to save one of variables of these records type to file with blockwrite function like this : var Temp1:Type2; begin setlength(temp1.y,100); blockwrite(MyFile,Temp1,sizeOf(Temp1); it just wrote as much as the size of pure record is ,but temp1 has a dynmic arrays which is resized , Could someone please tell me how I can write a complex record to a file , I mean something like what is used in VB6 . Thanks

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• managedQuery - trying to make 2 data points show when clicked

  - by fitz

  Here is what I have now: ListAdapter buildPhonesAdapter(Activity a) { String[] PROJECTION=new String[] { Contacts._ID, Contacts.DISPLAY_NAME, Phone.NUMBER, Email.DATA }; Cursor c=a.managedQuery(Phone.CONTENT_URI, PROJECTION, null, null, null); return(new SimpleCursorAdapter( a, android.R.layout.simple_list_item_2, c, new String[] { Contacts.DISPLAY_NAME, Phone.NUMBER, Email.DATA }, new int[] { android.R.id.text1, android.R.id.text2 })); } ListAdapter buildEmailAdapter(Activity a) { String[] PROJECTION=new String[] { Contacts._ID, Contacts.DISPLAY_NAME, Email.DATA }; Cursor c=a.managedQuery(Email.CONTENT_URI, PROJECTION, null, null, null); return(new SimpleCursorAdapter( a, android.R.layout.simple_list_item_2, c, new String[] { Contacts.DISPLAY_NAME, Email.DATA }, new int[] { android.R.id.text1, android.R.id.text2 })); } Need the 2 variables to show when cursor is picking this new option - I need Email.CONTENT_URI, and Phone.CONTENT_URI, to show when picked - I can get each one to show but need them both to show at same time.

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• Absolute URL Path for PHP Website

  - by kakaajee

  Hi friends, I am working on a website in a CMS site. I have provided a link in my footer file e.g blogs.php. This page is at the root like "http://www.example.com/new_cms/blogs.php" When I moves to other files link like "http://www.example.com/new_cms/forums" the footer link is changed to "http://www.example.com/new_cms/forums/blogs.php" but the blogs.php page resides at path "http://www.example.com/new_cms/" . I tried different $_SERVER[] variables but got no luck to get the above path "http://www.example.com/new_cms/" means the server name with the directory where the project is currently running from. Any one have idea how to get it done will be a great help. Thanks

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• PHP exec() hangs, Error 500

  - by MRX_II

  So, my plan is to make small thumbnails of URL's with PHP and IECapt. IECapt works well, a nice command line tool, gets the full sized image of specified URL in 1 to 4 seconds. But my problem is to execute it trough PHP. This is the code I've trying to get working: exec('IECapt.exe ' . escapeshellarg($URL) . ' ' . escapeshellarg($Filename)) $URL is of course the URL, and $filename is a simplified version of the URL. Sometimes I get the IECapt to snap the image(trough PHP), but it takes awfully long (30-60s), and in the end I always get a 500-error, with no error messages to tell me what's wrong. Both variables are fine, they work manually with commandline: IECapt http://google.com Google.png My server set-up is IIS7 and PHP5.2.9, if relevant. (Windows Vista, all on my personal computer, so full access.) Any ideas?

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• Calling As function from js problem

  - by Gene

  I have a swf file that is not controlled by me. The swf expects a javascript call to set some variables after initialization. The swf is embedded using the swfobject and I'm trying to call the as function right after the embed. This appears to be too soon because I get an error. Everything else should be fine since calling the as function manually via firebug does not produce the error. So the question is how do I call the function when the embed is complete?

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• form Validation white page not showing errors

  - by Jess McKenzie

  In the example below I am wanting to do all of the 'safety' checks on the $_POST variables but it seems when I click submit I get a white page why? I am wanting it to show the errors etc Form Process: /* check if the form is submitted */ if (isset($_POST['submitButton'])) { $fullName = $_POST['fullname']; if($_SERVER['REQUEST_METHOD'] == 'POST' && !empty($fullName)) { if (!ctype_alpha(str_replace(array("'", "-"), "",$fullName))) { $errorfullName .= '<span class="errorfullName">*First name should be alpha characters only.</span>'; } if (strlen($fullName) < 3 OR strlen($fullName) > 40) { $errorfullName .= '<span class="errorfullName">*First name should be within 3-40 characters long.</span>'; } } }

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