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• how can u print 1 to 10 & 10 to 1 by using recursion and with single variable

  - by ccc

  I am preparing for my interview tomorrow: I need answer for this question how can u print 1 to 10 & 10 to 1 by using recursion and with single variable

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• Is there a way define a global variable which is accesible from a class method?

  - by Starx

  Here is the situation I create a instance of a class $newobj = new classname1; Then I have another class writtern below and I want to this class to access the object above class newclass { public function test() { echo $newobj->display(); } } It is not allowed, is there a way define a variable globally through a class?

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• How to get a name of a variable coming into a function as a parameter using F#?

  - by Oldrich Svec

  Is there any way in F# how to get a name of a variable passed into a function? Example: let velocity = 5 let fn v = v.ParentName let name = fn velocity // this would return "velocity" as a string Thank you in advance

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• Reusing a NSString variable - does it cause a memory leak?

  - by Chris S

  Coming from a .NET background I'm use to reusing string variables for storage, so is the code below likely to cause a memory leak? The code is targeting OS X on the iphone/itouch so no automatic GC. -(NSString*) stringExample { NSString *result = @"example"; result = [result stringByAppendingString:@" test"]; // where does "example" go? return result; } What confuses me is an NSStrings are immutable, but you can reuse an 'immutable' variable with no problem.

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• Can I set an environment variable for an application using a shortcut in Windows?

  - by serpent5

  I have a feeling I should be able add a directory to the PATH environment variable on an application-lifetime basis, but I can't find out how to do this. Is it possible to add a parameter to a Windows shortcut that appends a directory to the current value of PATH for use by the application being linked? Cheers.

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• Most inappropriate function or variable names you have encountered?

  - by Andrioid

  I was reading through my daily doze of RSS when I noticed a link to the python compiler documentation where class names like assList, assName and assTuple exist. While starting names with 'ass' is perfectly acceptable to me, it just sparked this idea that there probably exist much better examples of this. Have you personally used or otherwise encountered any inappropriate function or variable names? Personally I have used 'crap' and 'moo' for temporary purposes, forgot them and at a later point they came too integrated for me to bother with fixing them.

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• Is it possible to delay variable implement(?)/recognize(?) in PHP?

  - by Relax

  For example, A.php: <?php $a = array('name'=>'wine[$index][name]', 'value'=>'wine[$index][value]' ) ?> B.php: include_once(a.php) ... $index = 0; $b = $a; I know this example won't work, just for explaination, i wanna if it is possible (if possible, how?) to delay variable $index to take value when $b = $a ?

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• How do I increment a variable so it chooses differnet lines from a text files in a While Loop.

  - by Kirk

  I have a script im writing. Here is whats happening. There is a while loop. In the while loop is a variable which is constant to X. How do i make X change from line one, line two, etc for each cycle of the while loop and pull X from a .txt file. Everything is in root. Thanks

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• What is the difference betwen Variable in PHP4 and PHP5 ?

  - by justjoe

  the only thing i know about this subject is... in PHP 5, when a variable used without assigned any value, then it a warning will be shown. Is there any other difference between this 2 different version ?

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• A more elegant way to parse a string with ruby regular expression using variable grouping?

  - by i0n

  At the moment I have a regular expression that looks like this: ^(cat|dog|bird){1}(cat|dog|bird)?(cat|dog|bird)?$ It matches at least 1, and at most 3 instances of a long list of words and makes the matching words for each group available via the corresponding variable. Is there a way to revise this so that I can return the result for each word in the string without specifying the number of groups beforehand? ^(cat|dog|bird)+$ works but only returns the last match separately , because there is only one group.

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• How to acces a global variable in a callback object in javascript YUI without use window.myvariable

  - by quilovnic

  I have this : var MyObject = function(){ this.url = "monurl"; this.mavar = ""; this.Load = function(){ var callback = { success: function(o){ mavar = o.responseXML.getElementsByTagName("montag")[0].firstChild.nodeValue; } } YAHOO.util.Connect.asyncRequest('GET',url,callback); } } the mavar variable is not accessible. How can I do this ?

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• Get a map & street view from an adress in a PHP-variable!

  - by Dennis Lauritzen

  Hello! I have a PHP-variable called $go_Adress which contains the adress I need to get a map and a street view from. How do I do that? I have created an api-key but else I don't know how to do it! Hope you can help.

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• Is there a "fancy" Ruby way to check whether a local variable is both defined and evaluates to true without using ands and ors?

  - by Steven Xu

  This is quite a quick question. I currently use do_this if (testvar ||= false) Which works just fine. But this approach unnerves me because while fast, it does not short-circuit like defined?(testvar) && testvar does, and it instantiates and assigns a value to a local variable that is subsequently never used, which seems inefficient. I enjoy the very reasonable fact that instance variables are nil before assignment, but I'd like for the situation to be just as easy for local variables.

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• passing variable to a batch file when called using "call" function.

  - by sushant

  i want to call a batch file from another batch file and also want to pass a variable to it. lets say i want to call b.bat from a.bat. my b.bat copies files. so while calling it from a.bat , i want to pass the path of the destination folder to b.bat.

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• How do I access a variable defined in URL when using Zend Framework?

  - by ben

  I had a read of the documentation, but couldn't see an example of how it would be possible to use the variable in traditional PHP style of $_POST['var'] I'm pretty sure my URL is legit: domain.com/module/controller/action/var/value/ Using the above as an example: $var didn't work $_POST['var'] didn't work How is it done?

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• Passing parameter to base class constructor or using instance variable?

  - by deamon

  All classes derived from a certain base class have to define an attribute called "path". In the sense of duck typing I could rely upon definition in the subclasses: class Base: pass # no "path" variable here def Sub(Base): def __init__(self): self.path = "something/" Another possiblity would be to use the base class constructor: class Base: def __init__(self, path): self.path = path def Sub(Base): def __init__(self): super().__init__("something/") What would you prefer and why? Is there a better way?

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• what should i put in this if statment to save the the current array value to a variable

  - by Kirk

  if (preg_match('/^([0-9]( |-)?)?(\(?[0-9]{3}\)?|[0-9]{3})( |-)?([0-9]{3}( |-)?[0-9]{4}|[a-zA-Z0-9]{7})$/', $buffer, $matches)); { $variable = ?; }

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• In pure C how can i pass variable parameters into a function?

  - by fmsf

  Hey, How can i pass (and access) using C, not c++, variable parameters into a function? void foo(char* mandatory_param, char* optional_param, char* optional_param2...) thanks /fmsf

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• How can I capture the current directory as an absolute pathname in a make variable?

  - by WilliamKF

  I'd like to get the current directory during a GNUmake file run put into a make variable. What is the syntax to do this? Something like this? DIR := $(PWD)

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• How do I pass a Python Variable to Bash?

  - by user336537

  Hello, How would I pass a Python variable to the Bash shell? It should work like this: foo="./RetVar.py 42" Replace the double-quotes with `s I have tried printing and sys.exiting the result, but to no avail. How would I accomplish my goal?

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• In pure C how can I pass a variable number of parameters into a function?

  - by fmsf

  Hey, How can i pass (and access) using C, not c++, variable parameters into a function? void foo(char* mandatory_param, char* optional_param, char* optional_param2...) thanks /fmsf

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• Is any way to get captcha value and store it in a variable?

  - by Vijay Prasath

  I am Using Selenium RC in C# My application has 3 Captha image in Different registration pages. i have a Huge script i will run it on night hours(when i am off). Hence i feel it will be better if i can capture the last displaying captcha image value and store it in to a variable so that i can input on the relevant field. Is it Possible ?

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• How do I customize the ASP.Net Bubble Event to pass an additional variable?

  - by CowKingDeluxe

  I am using BubbleEvent to give events from a web user control to its parent (which is a Default.aspx with code behind page). I would like to use BubbleEvent to not only pass the sender and event, but also an integer or another variable. Is there a way to add a parameter to the BubbleEvent, or is there a different way I should be approaching this?

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• C++ include statement required if defining a map in a headerfile.

  - by Justin

  I was doing a project for computer course on programming concepts. This project was to be completed in C++ using Object Oriented designs we learned throughout the course. Anyhow, I have two files symboltable.h and symboltable.cpp. I want to use a map as the data structure so I define it in the private section of the header file. I #include <map> in the cpp file before I #include "symboltable.h". I get several errors from the compiler (MS VS 2008 Pro) when I go to debug/run the program the first of which is: Error 1 error C2146: syntax error : missing ';' before identifier 'table' c:\users\jsmith\documents\visual studio 2008\projects\project2\project2\symboltable.h 22 Project2 To fix this I had to #include <map> in the header file, which to me seems strange. Here are the relevant code files: // symboltable.h #include <map> class SymbolTable { public: SymbolTable() {} void insert(string variable, double value); double lookUp(string variable); void init(); // Added as part of the spec given in the conference area. private: map<string, double> table; // Our container for variables and their values. }; and // symboltable.cpp #include <map> #include <string> #include <iostream> using namespace std; #include "symboltable.h" void SymbolTable::insert(string variable, double value) { table[variable] = value; // Creates a new map entry, if variable name already exist it overwrites last value. } double SymbolTable::lookUp(string variable) { if(table.find(variable) == table.end()) // Search for the variable, find() returns a position, if thats the end then we didnt find it. throw exception("Error: Uninitialized variable"); else return table[variable]; } void SymbolTable::init() { table.clear(); // Clears the map, removes all elements. }

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• What is the origin / meaning of these variable naming conventions?

  - by Andrew Hubbs

  What is the general meaning and where did it start to have variables with leading or trailing underscores? ex: _varName and varName_ I have always thought a leading underscore indicated the variable was a pointer but I don't know where I got this idea. Recently I have seen these naming conventions used in Java which makes that reasoning completely wrong.

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