variables

using expat startelement handler C++

Hello I am using expat to read an xml file. I want to populate some of my class member variables from the configruation specified in thexml file. I have defined my startelement handler, void Start(void *data,const XML_Char *el, const XML_Char **attr) and this will be referenced as following: XML_SetElementHandler(parser,Start, NULL...

C# variable initializations vs assignment

In a book I found following (translation): Initialization means assigning the value of the variable at the declaration time. int X=5 is called an initialization command. EDIT: It just says that term initialization is used only when you assign value at the declaration time. If you do it later, its just assignement (according to it -...

PHP session variables interchanged with local variables?

I've encountered a very odd issue in regards to session variables and local variables in php. I'm trying to figure out if I am not understanding something about sessions in php or if this is an issue with the php version my host is using. Here is a very simple code to demonstrate the weird issue: session_start(); var_dump($kenny); ...

My iPhone app crashes after returning from background. Cause: UIImage problem.

Hi all, First off, I want to say this site is AWESOME! and it helped me do lots of stuff while creating my iPhone app. Now, my problem is: When I launch my app, I have a UIImageView that loads an image depending on an if/else statements in -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event method. These images are assig...

JavaScript variable definition: Commas vs. Semicolons.

What are the differences and/or advantages, if any, of using commas when declaring a group of variables rather than semicolons. For example: var foo = 'bar', bar = 'foo'; versus var foo = 'bar'; var bar = 'foo'; I know that if you specify the var keyword on the first variable in the first example it persists across all of the vari...

What's wrong with my variable?

I can do a print_r of an employee object that I'm trying to pass into another method in another class and get the following: emp Object ( [db:emp:private] => PDO Object ( ) [salesId:emp:private] => ) When I attempt to pass this object, I get an undefined variable error message. What am I doing wrong? Is there a PHP function that I can...

Exchanging variables between powerpoint and excel VBA

I have a powerpoint pres that grabs some data from an excel sheet when a button is pressed. Set EXL = New Excel.Application EXL.Visible = False Dim XLApp As Excel.Application Set XLApp = GetObject(, "Excel.Application") This is how I set the new excel application. What I'm wondering is how I can send over a variable from my powerpo...

PHP: How to update a variable of a parent class from a child class

I have a function in a child class which counts the number of SQL queries in a page load In the child class which extends the parent class, after every: mysql_query($query); I put parent::update_query_function(); where update_query_function() is: function update_query_function(){ $this->query_num++; } the $query_num variable in ...

How can I compare a variable to a MySQL full-text index without a gigantic loop?

Let's say I've got two tables: NOTES has two columns: ID and BODY. BODY is a FULLTEXT index. KEYWORDS has two columns: ID and KEYWORD. I want to search every BODY for every KEYWORD and get one row for each match, the NOTES.ID and the KEYWORD.ID. So if there were 15 notes and each one matched 3 keywords, I would get 45 rows. But as ...

jQuery animation using variable

I have written a script to slide a div horizontally and stop at a specific margin-left value. The margin left depends on the link which was clicked, so I have used a calculation to find that specific value. When i try to pass the variable into the .animate({"margin-left":value},"slow"); Here is the code var marginLeft = parseInt(...

Storing Form Data as a Session Variable

Hey there- So I was wondering if it would be possible to store data coming in from a form as a session variable. Heres what I have so far, but I don't know what to put for the Form Action. Thanks for looking! <strong>Test Form</strong> <form action="" method"post"> <input type="text" name="picturenum"/> <input type="submit" name="Su...

Simple Operator question. +=

So my friend gave me some source code to start out with so I could review and understand it and I have a question about it, but since he's not online I thought I would try here, mainly I don't quite understand this line. num += i; Essentially, this is the same as num = num + i right? If you need more details please tell me! I l...

Use of shell variable inside command

Hi, my server is using CentOS 5.5 (which is almost Red Hat Linux). I want to backup a set of pictures into time-stamped files. This code would work: z_cmd1=$(tar cvzf /home/user1/public_ftp/misc/pics_20100925_142230.tar.gz /home/user1/public_html/misc/_pics_var/F???????.jpg) echo "tar output =[${z_cmd1}]" but of course I want the...

Passing variables to JavaScript inside a URL?

I'm dealing with a web-service that serves video files (host). They provide you with a Guid which is used in an embed code (link to js file). Their URL's are structured like this: http://www.foo.com/34534525lsjda345435/script.js Somehow, the script.js parses this URL and retrieves the variable. Can someone clue me in how this is done?...

What does the @ do in a SQL statement?

For example, when creating a command text for a SqlServer ce statement, the example has you use command.CommandText = "INSERT INTO Region (RegionID, RegionDescription) VALUES (@id, @desc)"; I understand how to run sql queries, but have always just passed the database system a string with sql statements. This is new to me, and I woul...

Display bash script with variables expanded

How can you display how a bash script would look like with the variables expanded? I want see how what the script would actually execute, without doing any damage. ...

Create variables from strings in Python

Is something like the following possible in Python: >>> vars = {'a': 5} >>> makevars(vars) >>> print a 5 So, makevars converts the dictionary into variables. (What is this called in general?) ...

How do I decide if a variable is numeric in Perl?

Possible Duplicate: How do I tell if a variable has a numeric value in Perl? I want to decide if a variable (value parsed from a string) is a number or not. How can I do that? Well, I guess /^[0-9]+$/ would work, but is there a more elegant version? ...

C++ Prime factor program 2 problems.

Okay so I"m writing a program (in C++) that is supposed to take a number, go through it, find out if it's factors are prime, if so add that to a sum, and then output the sum of all of the imputed number's prime factors. My program successfully seems to do this however it has 2 problems, 1) The number I am supposed to test to see the ...

as3.0 flash: how do i append a string to a variable so flash reads it as a variable?

i'm getting a value from a class that gives me e.g "icon1" as data. i want to use this within a function to control the visibility of an item nested in a movieclip on the stage. the nested movie has the same name as the data being sent. // here's what i want it to do: mymenu.icon1.visible = true; // but i cant append the 2 together as ...