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Hello, i want to check whether variable exists. Now I'm doing something like this: try: myVar except NameError: # Doint smth Are there any other ways without exceptions? Or is that part of code right? ...
Hey Guys, Got the following code: $(document).ready(function() { $('a.add-item').click(function() { if ($(this).parent().find('input').attr('value', '0')) { $(this).parent().find('input').attr('value', '1') } }); }); What I would like to do is to create a variable and increment it and...
Hi, I have some Tcl scripts that are executed by defining variables in the command-line invocation: $ tclsh84 -cmd <script>.tcl -DEF<var1>=<value1> -DEF<var2>=<value2> Is there a way to check if var1 and var2 are NOT defined at the command line and then assign them with a set of default values? I tried the keywords global, variable,...
Hello, I have to create several vbox-es in a for each loop. Now I want to do something like this. formsArray["vb"+counter] = new VBox; formsArray["vb"+counter].visible = true; add labels etc. I can't get this thing to work. Anybody any idea how to create dynamic variable names for my vbox-es? Thanks ...
Hi, I'm using Prototype and trying to dynamically access a variable in a loop. Code speaks better than me : for (var i=0;i<5;i++) { $('parent' + i).insert('<input type="button" value="Cancel" onclick="$('parent' + i).remove()" />', {position: 'after'}); } The problem is that "i is not defined" when I click on any of the Cancel bu...
How can i reference a class property knowing only a string? class Foo { public $bar; public function TestFoobar() { $this->foobar('bar'); } public function foobar($string) { echo $this->$$string; //doesn't work } } what is the correct way to eval the string? ...
How'd I go about this one? I want to tween a value from one to another in x time. While also taking into account that it'd be nice to have an 'ease' at the start and end. I know, I shouldn't ask really, but I've tried myself, and I'm stuck. Please assume that to cause a delay, you need to call function wait(time). ...
Hello. Don't let below code scare you away. The question is really simple, only two lines are making trouble: Why do my code generated a NaN error code? I am trying to substract one variable value from another so position of elements will be correct. The variables got their value from jQuery position() which is supposed to be integer ...
I wanted to check whether the variable is defined or not. eg alert( x ); Throws a not defined error How can I catch this error? ...
So I always heard that class fields (heap based) were initialized, but stack based variables were not. I also heard that record members (also being stack based) were also not initialized. The compiler warns that local variables are not initialized ([DCC Warning] W1036 Variable 'x' might not have been initialized), but does not warn for...
How can i iterate over the (public or private) properties of a php class? ...
PROBLEM SOLVED. Special thanks to Andrew Noyes for explaining its not a class but a Object Literal Notation. What a noob am I.. EDIT: SORRY, i made a mistake in my js file, the structure of my js is like this: (I am totally new to javascript, i need your guys help here...) var className = { settings : { setA : true, setB: ...
I want to see all of the current environment variables during a build. I'd like to do this in the pre or post-build steps if possible because I don't want to edit the Targets file. This could print to the Output window or to a file. I've tried a number of different ways without success. I'm using Visual Studio 2008. Thanks! ...
Hello, it seems pretty simple but I can't find a good way to do it. Say in the first page I create a variable $myVariable = "Some text"; And the form's action for that page is "Page2.php". So in Page2.php, how can I have access to that variable? I know I can do it with sessions but I think it's too much for a simple string, and I do ...
I'm trying to write a piece of code that checks a users stats, be that their points, rank or num_friends and in turn awards them a badge similar to that used in SO. The system is set so when a task (vote up, comment, etc.) is completed by a user, their user_id is recorded and queued to be evaluated at 5 min intervals by a cron job. Is ...
A simple Bash variable test goes: ${varName:? "${varName} is not defined"} I'd like to re-use this, by putting it in a function. How please? Following fails # # Test a variable exists tvar(){ val=${1:? "${1} must be defined, preferably in $basedir"} if [ -z ${val} ] then echo Zero length value else echo...
What is difference between in the following statements String name = "Tiger"; final String name ="Tiger"; Although the String class is final class, why do we need to create a String "CONSTANT" variable as final? ...
I am posting a form that has many similar fields (artist1, artist2, .... artist20). I am trying to add them to a database but I am not sure how to easily get all of the posted data with out having to write out each one separately. How can I combine an int to a string so that I dont have to write each one out? This is one way I tried that...
hey guys, i have the following code in my detailansicht.php: <div class="file_description_box"> <b>Beschreibung:</b><br /><br /> <?php if(!empty($beschreibung)) echo '<div align="center">'; echo '<img src="$coverlink" alt="Cover">'; echo '</div><br />'; echo fo...