for-loop

C# - For-loop internals

Hi there, a quick, simple question from me about for-loops. Situation I'm currently writing some high-performance code when I suddenly was wondering how the for-loop actually behaves. I know I've stumbled across this before, but can't for the life of me find this info again :/ Still, my main concern was with the limiter. Say we have: ...

tsql for loop on a list

How can I write this code in T-SQL? var categories = new []{ "cat1", "another category", "one more" }; for (var i = 0; i<categories.count; i++) { insert into Categories (id, name) values (i, categories[i]) } Is it possible? ...

Commas in for loop

Why is the following line producing errors? for(int i = 0, int pos = 0, int next_pos = 0; i < 3; i++, pos = next_pos + 1) { // … } error: expected unqualified-id before ‘int’ error: ‘pos’ was not declared in this scope error: ‘next_pos’ was not declared in this scope Compiler is g++. ...

VB2010 - For Loop Exiting Issue

I have a simple for loop with the following code For i As Integer = 0 To 4 Snake(i).X = (120 - 20 * i) Snake(i).Y = 120 SnakeBody(i).Location = New Point(Snake(i).X, Snake(i).Y) Snake(i).Facing = 3 Next i But for some reason I unable to debug it. I place a breakpoint on the line...

Batch translating with Google Language API

I am trying to utilize Google's AJAX Language API to translate each value in an array. for(var n=0; n < mytext.length; n++) { google.language.translate(mytext[n], originalLanguage, newLanguage, function(result){ if(!result.error){ document.getElementById("caption") += mytext[n]+" has been translated to "+result.translation; } ...

PDF editor for iphone

hai can any one help me where can i get a sample code for editing pdf files in iphone ...

Loop takes forever with large count

This loop takes forever to run as the amount of items in the loop approach anything close to and over 1,000, close to like 10 minutes. This needs to run fast for amounts all the way up to like 30-40 thousand. 'Add all Loan Record Lines Dim loans As List(Of String) = lar.CreateLoanLines() Dim last As Integer = loans.Count - 1 For i = 0 T...

Javascript for loop trigger action when run

Well i have a simple for loop function issue is that i want the page to reload once done but what happens sometimes is that the page preloads before the loop has been fully run which makes the script not behave properly it's like this at the moment: for (loop condition) { action } window.location.reload(); but as i just mention...

How to rewrite this Dictionary For Loop in Python?

Hello, I have a Dictionary of Classes where the classes hold attributes that are lists of strings. I made this function to find out the max number of items are in one of those lists for a particular person. def find_max_var_amt(some_person) #pass in a patient id number, get back their max number of variables for a type of variable ...

How do you remember the order of the expressions in a for loop?

It's a pretty simple question, I always have to go check here and then I hit my head and say it's so obvious. But really after a week of not using it I usually end up writing for ($i = 1; $i++; $i <= 10;) { echo $i; } some Mnemonic might help ...

Should I use `while (true)` or `for (;;)` (in languages that support both)?

Possible Duplicate: When implementing an infinite loop, is there a difference in using while(1) vs for(;;) vs goto (in C)? In languages where while (true) or for (;;) both mean "loop forever", which should I use? ...

Performance of FOR vs FOREACH in PHP

First of all, I understand in 90% of applications the performance difference is completely irrelevant, but I just need to know which is the faster construct. That and... The information currently available on them on the net is confusing. A lot of people say foreach is bad, but technically it should be faster since it's suppose to simpl...

Why does assigning a value to an array in a for loop result in the array having the same value for each iteration when passed to console.log()?

Given the following code: var tmp = [0]; for(var i=0;i<100;i++) { tmp[0] = i; console.log(tmp); } I'd expect output of [0], [1], [2], [3], etc But I instead get [99], [99], [99], [99], etc Stepping through the code in a debugger (firebug) however nets me the correct result of [0], [1], [2]. ...

Looping through string values from a windows command line bat file

I am trying to create a batch script for my Windows machine that loops through a list of (string/decimal) values and uses each value as a parameter inside the loop. Below is an example of a simple for loop I would like to use to display all the different version files (from my list) FOR ? in ('1.1','1.2','2.4','3.9') do echo V[value_fr...

Why does adding or removing a newline change the way this perl for loop functions?

I'm starting to learn perl, using the Wrox Beginning Perl available on perl.org and have a question regarding a for loop example they provide in Chapter 3. #!/usr/bin/perl use warnings; use strict; my @count = (1..10); for (reverse(@count)) { print "$_...\n"; sleep 1; } print "Blast Off!\n" This is the script they pr...

javascript: Using the current for-loop counter-value inside a function() { }?

Hi, on a website i want to do this: (simplified) myHandlers = new Array(); for(var i = 0; i < 7; i++) { myHandlers.push(new Handler({ handlerName: 'myHandler'+i, // works, e.g. ->myHandler1, 2, 3 etc. handlerFunc: function(bla) { /*...*/ alert(i); } // doesn't work,all return 7 } } I could set the counter as another attrib...

Using DateTime in a For loop, incrementing date Isn't working

I have this loop, its purpose is to loop through a range of dates and perform some logic to automate adding entries into the database. The issue is that the incrementing portion, date.AddDays(1.0) isn't working, and is always the same result, causing an infinite loop. Any insight? for (DateTime date = DateTime.Now; futureDate.Compare...

What's wrong with this C program

Possible Duplicate: Help with C puzzle The intention of the program was to print a minus sign 20 times, but it doesn't work. #include <stdio.h> int main() { int i; int n = 20; for( i = 0; i < n; i-- ) printf("-"); return 0; } ...

Python - Sum of numbers

I am trying to sum all the numbers up to a range, with all the numbers up to the same range. I am using python: limit = 10 sums = [] for x in range(1,limit+1): for y in range(1,limit+1): sums.append(x+y) This works just fine, however, because of the nested loops, if the limit is too big it will take a lot of time to compu...

Iterating with different integral types

Does it make any difference if I use e.g. short or char type of variable instead of int as a for-loop initializer? for (int i = 0; i < 10; ++i) {} for (short i = 0; i < 10; ++i) {} for (char i = 0; i < 10; ++i) {} Or maybe there is no difference? Maybe I make the things even worse and efficiency decreases? Does using different type ...