variables

jquery selector in variable

can someone explain why this jquery selector is not working, I've worked around the issue but for my sanity would like to know what I've got wrong I have a form with multiple textareas, each gets an id like f_id_DSC000001.JPG where the last part is a photograph number, the textarea has an onblur event that uses post to send its contents...

A kind of static variable in PHP

Hi, I would want to display a certain message on a php page at a let's say 15 displayed pages. So it displays the message once and after 15 again and so on. I should need a varaible that keeps it's value between pages reload. Can I do that with PHP? thanks. ...

What is the best way in Tcl v8.4 to have a proc return an array?

If I have a proc that needs to return an array to its caller, what is the best way to do this? I following code does not work in Tcl due to inability to $ an array variable: proc mine {} { array set foo { red 1 blue 2 green 3 } $foo } tcl> set foo [mine] Error: can't read "foo": variable is array Alternatively this doesn't work ...

Use Same variable name in scope

I need to use the same variable name to declare the connection string. But when i do this, i will have further error. I declared "SqlConnection sqlCon = new SqlConnection(strCon);" for the first variable, can i use it again? According to my teacher, i should use the same variable. string strCon = Database.GetConStr(); SqlConnection...

how to remove system environment variable by using batch file

I need to remove system variables from client workstation and my clients are 500+ so I want to provide batch file to user to run himself to delete the system variables. ...

Can Make undefine a variable ?

I'm working in an embedded system (RTXC) where I need to disable the debugger functionality which is enabled through a #define command. However, when I change the #define to undefine, compilation goes off fine, but when the linker runs, it encounters an error about a symbol not existing that belongs to the debug code (which should have ...

Python variables

Hey, I'm trying to create a basic program that will generate a number based on variables entered by the user. The formula is a = b / (c * d) This is a formula for finding specific heat, whereas b=energy, c=mass, and d= change in temperature. So my problem is that I'm not making this program for myself, otherwise I could just assign ...

type of object references in ruby

Hello, I am new to Ruby and currently trying a few examples from the Ruby book I am using as a guide: class Account attr_accessor :balance def initialize(balance) @balance = balance end end class Transaction def initialize(account_a, account_b) @account_a = account_a @account_b = account_b end def debit(account,amount) a...

Initializing an instance variable

With an instance variable myArray: @interface AppController : NSObject { NSArray *myArray; } Sometimes I see myArray initialized like this: - (void)init { [super init]; self.myArray = [[NSArray alloc] init]; return self; } and sometimes I see it with a more complicated method: - (void)init { [super init]; N...

how do i hide var passing info in the url if i have no form tags?

Hey guys - im using var passing links like this to jump around a site... <a href = "index.php?content=about.html"> ...problem is, i have all the ugly var info visible in the url. I would usually hide it by using the post method, but i dont have any form tags, so is it even possible? Thanks!!!!!!! ...

BASH: Does it support conditional variables like var="test"?"1":"2"

I am new to bash but have done lots of PHP, and Javascript. Is there some sort of equivilent to this PHP? $default = 10; $var = (!$var) ? $default : $var; Thanks ...

Returning pointer to a local structure

Is it safe to return the pointer to a local struct in C? I mean is doing this struct myStruct* GetStruct() { struct myStruct *str = (struct myStruct*)malloc(sizeof(struct myStruct)); //initialize struct members here return str; } safe? Thanks. ...

XSL: How do I assign the value of an XML element to a variable (minimal change to page below)?

See http://stackoverflow.com/questions/1468522/xslt-to-operate-on-element-value-before-displaying for the original XML and XSL. I got an answer to my question there. My other question on this same XML/XSL is: if I would like to capture the value of an element (such as the "title" element) in an XSL local variable, and then operate on it...

Attempting an advanced htaccess rewrite trick, having difficulties

Hey guys, here's what I'm attempting: I'd like to make it so I can turn all url variables and values into folders, all with one rule. I was expecting to find some way to do this: www.example.com/var1/val1/var2/val2/varN/valN In an ideal world I could get rewrite to this: www.example.com/index.php?var1=val1&var2=val2&varN=valN...

Making a string the name of an instance/object

I've been struggling for a couple of days now with the following... I'm trying to find a way to instantiate a number of objects which I can name via a raw_input call, and then, when I need to, look at its attributes via the 'print VARIABLE NAME' command in conjunction with the str() method. So, to give an example. Let's say I want to ...

Jquery Json dynamic variable name generation

I make a jquery .ajax call and I'm expecting a json result. The catch is, if there are say 5 authors, I'll get author_details_0, author_details_1, author_details_2, etc.... How can I dynamically construct the name of the variable to retrieve from json ? I don't know how many authors I'll get, there could be hundreds. $.ajax({ type: "POS...

Actionscript3: Does variable exist?

I'm a little bit new to Actionscript, but I can't figure this one out. I've done a lot of searching on this topic and haven't found a clear answer. I've tried the following solutions that people posted online but none of them work. All the following solutions give the error: 1120: Access of undefined property myVariable Suggestion #1: ...

Why are variables declared with their interface name in Java?

This is a real beginner question (I'm still learning the Java basics). I can (sort of) understand why methods would return a List<String> rather than an ArrayList<String>, or why they would accept a List parameter rather than an ArrayList. If it makes no difference to the method (i.e., if no special methods from ArrayList are required),...

how are these two variables unpacked?

Through tutorials I had learned that you can define two variables in the same statement, e.g.: In [15]: a, b = 'hello', 'hi!' In [16]: a Out[16]: 'hello' In [17]: b Out[17]: 'hi!' well how does that apply to here? fh, opened = cbook.to_filehandle(fname, 'w', return_opened = True) I prodded further: In [18]: fh Out[18]: <open fil...

Is there a way to modify foreach loop variable?

The following code gives an error message: #!/usr/bin/perl -w foreach my $var (0, 1, 2){ $var += 2; print "$var\n"; } Modification of a read-only value attempted at test.pl line 4. Is there any way to modify $var? (I'm just asking out of curiosity; I was actually quite surprised to see this error message.) ...