for-loop

How can I refactor out needing so many for-loops in rails?

I need help refactoring this multi-loop thing. Here is what I have: Campaign has_many Contacts Campaign also has many Models which are templates: (Email, Call, and Letter). Because I am looking for overdue on each, I created an array called Event which I'd like to loop through that contains ['email', 'call', 'letter']. I need a list ...

Problem with Postgres FOR LOOP

Hi all, Ich have a problem in postgres function: CREATE OR REPLACE FUNCTION linkedRepoObjects(id bigint) RETURNS int AS $$ DECLARE catNumber int DEFAULT 0; DECLARE cat RECORD; BEGIN WITH RECURSIVE children(categoryid,category_fk) AS ( SELECT categoryid, category_fk ...

Handle order dependence in loops

Hey all, I'm making a templating system where I instantiate each tag using a foreach loop. The issue is that some of the tags rely on each other so, I'm wondering how to get around that ordering from the looping. Here's an example: Class A { public $width; __construct() { $this->width = $B->width; // Undefined! Or atleast not...

Listing localstorage

I did my own feature using this: function save(title, url) { for (var i = 1; i < localStorage.length; i++) { localStorage["saved-title_" + i + ""] = title; localStorage["saved-url_" + i + ""] = url; } } function listFavs() { for (var i = 1; i < localStorage.length; i++) { console.log(localStorage["saved-fav-title_" + i + ...

Nested WHILE loops in Python

I am a beginner with Python and trying few programs. I have something like the following WHILE loop construct in Python (not exact). IDLE 2.6.4 >>> a=0 >>> b=0 >>> while a < 4: a=a+1 while b < 4: b=b+1 print a, b 1 1 1 2 1 3 1 4 I am expecting the outer loop to loop through 1,2,3 and 4. And I kno...

Python optimization problem?

Alright, i had this homework recently (don't worry, i've already done it, but in c++) but I got curious how i could do it in python. The problem is about 2 light sources that emit light. I won't get into details tho. Here's the code (that I've managed to optimize a bit in the latter part): import math, array import numpy as np from PIL...

select for update problem in jdbc

I'm having a problem with select for update in jdbc. The table i'm trying to update is the smalldb table, i'm having problems-- i'm using select for update which does a lock on the selected row the update statement is -- String updateQ = "UPDATE libra.smalldb SET hIx = ? WHERE name = ?"; the select statement is -- rs = stmt1.execut...

jquery range utility for quick iteration (prototype's $R equivalent)

In prototype the cumbersome for: for (i=0; i<10; i++) { ... } can be written as $R(0, 10).each(function(i){ ... }); Is there an equivalent of range in JQuery ? ...

FindControl() from UserControl inside a for loop

I'm creating a usercontrol that will have a series of LinkButtons. I've declared all of my link buttons at the top of my class LinkButton LB1 = new LinkButton(); LinkButton LB2 = new LinkButton(); //... LinkButton LB9 = new LinkButton(); now I'd like to be able to create a loop to access all of those link buttons so I don't have to w...

Add characters to month loop?

I currently have a php loop running exactly how I need it with proper validations (in both php and javascript) with one exception, if the month is less than 2 digits, (i.e. 1,2,3,4), I need for a '0' to appear before: 01 - January 02 - February ... 10 - October My code for the loop is currently: <select name="Month"> <...

C++ performance, for versus while

hello. In general (or from your experience), is there difference in performance between for and while loops? What if they are doubly/triply nested? Is vectorization (SSE) affected by loop variant in g++ or Intel compilers? Thank you ...

Getting two characters from string in python

hi, how to get in python from string not one character, but two? I have: long_str = 'abcd' for c in long_str: print c and it gives me like a b c d but i need to get ab cd I'm new in python.. is there any way? ...

zsh for loop exclusion

This is somewhat of a simple question, but for the life of me, I cannot figure out how to exclude something from a zsh for loop. For instance, let's say we have this: for $package in /home/user/settings/* do # do stuff done Let's say that in /home/user/settings/, there is a particular directory ("os") that I want to ignore. Logica...

PHP modifying and combining array

Hi everyone, I have a bit of an array headache going on. The function does what I want, but since I am not yet to well acquainted with PHP:s array/looping functions, so thereby my question is if there's any part of this function that could be improved from a performance-wise perspective? $var = myFunction ( array('key1', 'key2', 'key3'...

ForEach loop: Output something different on every second result

I have two for each loops and I am trying to output something different for each second result: foreach ($wppost as $wp) { $wp_title = $wp->post_title; $wp_date = strtotime($wp->post_date); $wp_slug = $wp->post_name; $wp_id = $wp->ID; // Start Permalink Template $wp...

best-practice on for loop's condition

what is considered best-practice in this case? for (i=0; i<array.length(); ++i) or for (i=array.length()-1; i>=0; --i) assuming i don't want to iterate from a certain direction, but rather over the bare length of the array. also, i don't plan to alter the array's size in the loop body. so, will the array.length() become constant ...

for loop in as3

Hi, i'm trying to effect a number of movieclips inside another movieclip, in this case set the alpha to 20%. But all i get is an error message. (TypeError: Error #1010: A term is undefined and has no properties. at array_fla::MainTimeline/frame1()) Anyone knows why it's not working? var myClip = new mcClip; addChild(myClip); myClip.x...

iPhone facebook connect FQL Query to get Profile URL.

Hai. I am using Face book Connect FQL Queries to extract my profile photo url that is src_big,src_small URL. But i am always getting the empty array in below delegate (void)request:(FBRequest*)request didLoad:(id)result My FQL query is. NSString* fql = [NSString stringWithFormat:@"SELECT src_big,src_small FROM photo WHERE pid IN...

php for loop varable names

i got a code of 100-200 rules for making a table. but the whole time is happening the same. i got a variable $xm3, then i make a column . next row, i got $xm2 and make column. next row, i got $xm1 and make column. so my variables are going to $xm3, $xm2, $xm1, $xm0, $xp1, $xp2, $xp3. is there a way to make a forloop so i can fill $xm a...

Java for-loop problem

The problem is that I am trying to make certain tiles blocked so the player cannot walk on them. However, it's only reading the FIRST tile which is board[0][0] and everything else is not checked.... What am I doing wrong? :( Here's my code: import java.applet.*; import java.applet.Applet; import java.awt.*; import java.awt.Canvas.*; ...