loops

Is "map" a loop?

While answering this question, I came to realize that I was not sure whether Perl's map can be considered a loop or not? On one hand, it quacks/walks like a loop (does O(n) work, can be easily re-written by an equivalent loop, and sort of fits the common definition = "a sequence of instructions that is continually repeated"). On the ot...

Looping through a file in VB.NET

I am writing a VB.NET program and I'm trying to accomplish the following: Read and loop through a text file line by line Show the event of the loop on a textbox or label until a button is pressed The loop will then stop on any number that happened to be at the loop event and When a button is pressed again the loop will continue. ...

why is there different syntax same outcome?

Why is there different syntax same outcome? For example # Example 1 if($myCondition == true) : #my code here endif; if($myCondition == true) { #my code here } # Example 2 foreach($films as $film) : #my code here endforeach; foreach($films as $film) { #my code here } Also I have been using <?= for ages now and I n...

Arguments to JavaScript Anonymous Function

for (var i = 0; i < somearray.length; i++) { myclass.foo({'arg1':somearray[i][0]}, function() { console.log(somearray[i][0]); }); } How do I pass somearray or one of its indexes into the anonymous function ? somearray is already in the global scope, but I still get somearray[i] is undefined ...

Javscript Loop / Array / Variable question

Hi. I'm trying to get this to work and I hope this isn't too vague. -Chris var example = new Array(); var test1 = "one"; var test2 = "two"; var test3 = "three"; for (v = 1; v <= 3; v++) { alert(example[test + v]) } I want the alert to say: one two three ...

Matrix "Zigzag" Reordering

I have an NxM matrix in Matlab that I would like to reorder in similar fashion to the way JPEG reorders its subblock pixels: (referenced from here) I would like the algorithm to be generic such that I can pass in a 2D matrix with any dimensions. I am a C++ programmer by trade and am very tempted to write an old school loop to accomplis...

jquery :first selector loop problem

$(".wrap table tr:first").addClass("tr-top"); it works for the first table, but i have many tables under the div .wrap. what should i do? thanks! ...

Check the cumulative status of onLoadInit in a for statement

In a setup like this is it possible to check the cumulative status of all onLoadInit? for(var i:Number = 0; i < limit; i++) { var mcLoader:MovieClipLoader = new MovieClipLoader(); var mclListener:Object = new Object(); mclListener.onLoadInit = function(mc:MovieClip) { trace(i + " is finished loading!"); } mcL...

Rails: Accessing previous loop in Populator (rake db:populate)

I am populating my Rails database using populator, and I have a case where I would like to build a series of records where fields start_date and end_date follow seamlessly from each other (from today back into the past). Here is a sample of what I'm doing: # populate.rake Chain.populate 1 do |ch| ch.date_end = DateTime.now ch.date_...

How can use foreach to Loop Through PHP Array

How can use foreach loop to loop through the $Result? <?php mysql_connect("localhost", "mysql_user", "mysql_password") or die("Could not connect: " . mysql_error()); mysql_select_db("mydb"); $Query = mysql_query("SELECT * FROM mytable"); $Result = array( ); while ($Row = mysql_fetch_array ( $Query) ) { $Result [ ] = $Row; } m...

Loop through resultset and add create comma seprated string in ASP Classic

Here's my ASP Classic: set irs = recordset(sql,PageDB) if not irs.eof then dim new_list new_list = "" do while not irs.eof 'Add irs("name") to new_list and seperate by comma irs.movenext loop end if kill(irs) How would I add irs(name) to new_list ...

Javascript looping only through defined properties of array. How?

For example if i'm keeping array of references via id like that: if(typeof channel_boards[misc.channel_id] == 'undefined') { channel_boards[misc.channel_id] = $('<div class="channel" channel_id="'+misc.channel_id+'"></div>').appendTo('#board'); } And then i'm looping through array to find required reference. I'm looping through u...

C++ game loop example

Can someone write up a source for a program that just has a "game loop", which just keeps looping until you press Esc, and the program shows a basic image. Heres the source I have right now but I have to use SDL_Delay(2000); to keep the program alive for 2 seconds, during which the program is frozen. #include "SDL.h" int main(int argc,...

MooTools/JavaScript variable scope

I am trying to make each number displayed clickable. "1" should alert() 80, "2" should produce 60, etc. However, when the alert(adjust) is called, it only shows 0, not the correct numbers. However, if the commented out alert(adjust) is uncommented, it produces the correct number on page load, but not on clicking. I was wondering why t...

Get page permalink and title outside the loop in wordpress

Hello, How to Get page permalink and title outside the loop in wordpress. I have a function like function get_post_info(){ $post; $permalink = get_permalink($post->ID); $title = get_the_title($post->ID); return $post_info('url' => $permalink, 'title' => $title); } when this function called within the loop, it returns the pos...

problems with async jquery and loops

I am so confused. I am trying to append portals to a page by looping through an array and calling a method I wrote called addModule(). The method gets called the right number of times (checked via an alert statement), in the correct order, but only one or two of the portals actually populate. I have a feeling its something with the loop ...

How to output multiple rows from an SQL query using the mysqli object

Assuming that the mysqli object is already instantiatied (and connected) with the global variable $mysql, here is the code I am trying to work with. class Listing { private $mysql; function getListingInfo($l_id = "", $category = "", $subcategory = "", $username = "", $status = "active") { $condition = "`status` = '$status'"; ...

How do I get a less than in a javascript for loop in XSL to work?

I am using CDATA to escape the script but in IE8's debugger I still get this message: "Expected ')'" in the for loop conditions. I am assuming it still thinks that the ; in the &lt; generated by CDATA is ending the loop conditions. Original script in my XSL template: <script type="text/javascript" language="javascript"> <![CDATA[ ...

Javascript XMLHttpRequests in Loop?

Hi, I am trying to save an array of records into a mysql database but I always get the abort message in firebug except for the last save. How do I save the records using a loop for XMLHttpRequest? Here is my code: function savingContent() { if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp...

Objective-C NSMutableArray - foreach loop with objects of multiple classes

Hi, I have the NSMutableArray *children in the datastructure-class "Foo" which is the superclass of many others, like "Bar1" and "Bar2". That array stores Bar1 and Bar2 objects to get a tree-like recursive parent-children-structure of subclasses from Foo. To access the objects in the array, I loop through them using the foreach loop in ...