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  • Who "invented" i,j,k as integer counter variable names? [closed]

    - by mjy
    Possible Duplicate: Why are we using i as a counter in loops I've used these myself for more than 15 years but cannot really remember how/where I picked up that habit. As it is really widespread, I'm curious to know who originally suggested / recommended using these names for integer loop counters (was it the K&R book?).

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  • I want to do a sql update loop statement, by using the do--while in php

    - by Jean
    Hello, I want to loop the update statement, but it only loops once. Here is the code I am using: do { mysql_select_db($database_ll, $ll); $query_query= "update table set ex='$71[1]' where field='val'"; $query = mysql_query($query_query, $ll) or die(mysql_error()); $row_domain_all = mysql_fetch_assoc($query); } while ($row_query = mysql_fetch_assoc($query)); Thanks Jean

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  • Custom Control Events in C#

    - by pm_2
    I'm trying to create a custom control and need to raise an event from it. The idea is to raise an event at the end of the click event (OnAfterClick). I found one or two tutorials on doing this, but am clearly missing a step somewhere; I have the following. In the control: public class AfterClickEventArgs : EventArgs { ... } public partial class MyButton : CommandButton { public delegate void AfterClickEvnt(object sender, AfterClickEventArgs e); public event AfterClickUpdatedEvnt AfterClick; } protected override void OnClick(EventArgs e) { ... Processing here ... AfterClickEventArgs myArgs = new AfterClickEventArgs(); AfterClick(this, newArgs); } In the program using the control: In InitializeComponent(): this.MyButton.AfterClick += new System.EventHandler(this.cmdMyButton_Click); This line is giving me a compile error (cmdMyButton_Click does exist). It tells me: Cannot implicitly convert type 'System.EventHandler' to 'Namespace.MyButton.AfterClick' Can anyone tell me what I'm missing, or misunderstanding about this, please?

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  • Creating a simple sencha listview using a loop

    - by chris_sencha
    How do we substitute a hardcoded data with a for loop in sencha and extjs? Say, I have below hardcoded one Ext.application({ launch: function() { Ext.create('Ext.List', { fullscreen: true, itemTpl: '{title}', data: [{ title: 'Item 1' }, { title: 'Item 2' }, { title: 'Item 3' }, { title: 'Item 4' }] }); } }); In the above one, how to replace data to something like below Ext.application({ launch: function() { Ext.create('Ext.List', { fullscreen: true, itemTpl: '{title}', data: [ for(int i=0;i<5;i++){ {title: 'Item '+i}, } ] }); } });

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  • slowing down a loop in a recursive function

    - by eco_bach
    I have a difficult problem with a recursive function. Essentially I need to 'slow down' a for loop within a function that repeatedly calls itself(the function); Is this possible, or do I need to somehow extract the recursive nature of the function? function callRecursiveFuncAgain(ob:Object):void{ //do recursive stuff; for (var i:int = 0; i < 4; i++) { _nextObj=foo callRecursiveFuncAgain(_nextObj); } }

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  • bash shell date parsing, start with specifc date and loop through each day in month

    - by Joe Stein
    Hi, I need to create a bash shell script starting with a day and then loop through each subsequent day formatting that output as %Y_%m_d I figure i can submit a start day and then another param for the number of days. My issue/question is how to set a DATE (that is not now) and then add a day. so my input would be 2010_04_01 6 my output would be 2010_04_01 2010_04_02 2010_04_03 2010_04_04 2010_04_05 2010_04_06 Thanks

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  • .bat for shutdown/reboot on xp loop problem

    - by Luca
    hello! i have a little problem... on win xp, if i write on commandline shutdown -t 00 -r -f the reboot works fine. but if i paste it, as is, in a bat file...the prompt show me an infinite loop. anyone can say me why? thanks a lot for any suggestion :)

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  • Socket Programming : Inputstream Stuck in loop - read() always return 0

    - by Atom Skaa ska Hic
    Server side code public static boolean sendFile() { int start = Integer.parseInt(startAndEnd[0]) - 1; int end = Integer.parseInt(startAndEnd[1]) - 1; int size = (end - start) + 1; try { bos = new BufferedOutputStream(initSocket.getOutputStream()); bos.write(byteArr,start,size); bos.flush(); bos.close(); initSocket.close(); System.out.println("Send file to : " + initSocket); } catch (IOException e) { System.out.println(e.getLocalizedMessage()); disconnected(); return false; } return true; } Client Side public boolean receiveFile() { int current = 0; try { int bytesRead = bis.read(byteArr,0,byteArr.length); System.out.println("Receive file from : " + client); current = bytesRead; do { bytesRead = bis.read(byteArr, current, (byteArr.length-current)); if(bytesRead >= 0) current += bytesRead; } while(bytesRead != -1); bis.close(); bos.write(byteArr, 0 , current); bos.flush(); bos.close(); } catch (IOException e) { System.out.println(e.getLocalizedMessage()); disconnected(); return false; } return true; } Client side is multithreading,server side not use multithreading. I just paste some code that made problem if you want see all code please tell me. After I debug the code, I found that if I set max thread to any and then the first thread always stuck in this loop. That bis.read(....) always return 0. Although, server had close stream and it not get out of the loop. I don't know why ... But another threads are work correctly. do { bytesRead = bis.read(byteArr, current, (byteArr.length-current)); if(bytesRead >= 0) current += bytesRead; } while(bytesRead != -1);

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  • using generic and for each loop in jsp

    - by mawia
    I am developing a web application. I am using Eclipse as IDE. I was using generic and for each loop, both being feature of java 1.5, and it compiled quite fine when used in backend means in simple java classes. But when I'm using these on jsp, jsp is failing to compile with error showing generic and for each as culprit. Can you shed some light on this? Maybe I am at fault with Eclipse settings?

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  • Foreach loop problem for Iqueyable object

    - by Vikas
    Hi, Can we use foreach loop for Iqueryable object? I'd like to do something as follow: query = Iqueryable<Myclass> = objDataContext.Myclass; // objDataContext is an object of LINQ datacontext class int[] arr1 = new int[] { 3, 4, 5 }; foreach (int i in arr1) { query = query.Where(q => (q.f_id1 == i || q.f_id2 == i || q.f_id3 == i)); } It gives me wrong output as each time value if i is changed.

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  • callback for each for loop iteration

    - by SWKK
    Hi Guys, a bit of a naive question, but nonetheless. I am trying to break up a for loop in which a 2d Matrix is being read. I would like to write a callback function to consume row-wise/col-wise chunks per row/col iteration. Any hints on how to tie up the callback function with iteration?

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  • Random number in a loop

    - by Sam
    Hi all, having an issue generating random numbers in a loop. Can get around it by using Thread.Sleep but after a more elegant solution. for ... Random r = new Random(); string += r.Next(4); Will end up with 11111... 222... etc. Suggestions?

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  • Passing input value thru XML loop and return value

    - by Mike Dyer
    "X" is reading the form value, but it is still passing and older "var thisMarket" value. The objective is to take a zip code via HTML form: <form id="market" name="market" onSubmit="return validateZIP(this.zip.value);" method="get" action=""> <input type="text" name="zip" id="zip" value="zipcode" onfocus="if(!this._haschanged){this.value=''};this._haschanged=true;" style="float:left; width:100px; margin-top:5px;"> <input type="image" style="float:left; margin-top:5px; border: 0pt none ; width: 22px; height:17px;" src="images/nav/bottom/linkbar/btn_search_btn.gif" onClick="findLda();"> </form> The script being passed thru is: function findLda(x){ marketName = new Array(); marketURL = new Array(); zip = new Array(); zip_temp = new Array(); zipMatch = false; var shareZip = "Shared Zips"; var thisMarket = "Market value"; xmlDoc=loadXML("/_includes/market.xml"); var Offer,node; document.getElementById('market').innerHTML=''; for(var j=0; j<xmlDoc.getElementsByTagName('market').length; j++){ node = xmlDoc.getElementsByTagName('market')[j]; marketName.push(node.childNodes[3].textContent); marketURL.push(node.childNodes[5].textContent); for(var k=0; k<node.getElementsByTagName('zip').length; k++){ if(node.getElementsByTagName('zip')[k].textContent!=null){ zip_temp.push(node.getElementsByTagName('zip')[k].textContent); } } zip.push(zip_temp); zip_temp = new Array(); } //loop the zip Array to find a match for the query Zip. for(k=0; k<zip.length; k++){ for(m=0; m<zip[k].length; m++){ if(x == zip[k][m].toString()){ zipMatch=true; thisMarket=marketName[k].toString(); } } } alert(thisMarket); } The objective naturally is to take field input (A), pass it thru market.xml - initialize a loop and match a zip (B), alert the result (C). Looking for any direction with what is existing or a completely new direction. Thanks!

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  • Jquery UI autocomplete event change

    - by Stenly.k
    Hi I got a problem with change event. By documntation there should be object ui.item After an item was selected; ui.item refers to the selected item. Always triggered after the close event. But when I try it ui.item is undefined :( I want unset s_town_id when input in autocomplete doesn't match with data from script. Thx for any help. <input id="s_town" type="text" name="s_town" /> <input type="text" id="s_town_id" name="s_town_id" /> $(function() { $("#s_town").autocomplete({ source: function(request, response) { $.ajax({ url: "/_system/_ajax/uiautocomplete.php", dataType: "json", data: { name: "s_town", term: request.term }, success: function(data) { response($.map(data, function(item) { return { label: item.whisper_name+ " [" + item.zip_code + " / " + item.lup_state + "]", value: item.whisper_name, id: item.whisper_id, zip_code: item.zip_code, lup_state: item.lup_state, stateid: item.stateid } })) } }) }, minLength: 2, select: function(event, ui) { $("#s_town_id").val(ui.item.id); }, change: function(event, ui) { // ui.item is undefined :( where is the problem? $("#s_town_id").val(ui.item.id); } }); });

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  • Missing $ on loop variable

    - by k0re
    Hi, 1 #!/usr/bin/perl 2 use strict; 3 use warnings; 4 5 my @array = qw[a b c]; 6 foreach my($a,$b,$c) (@array) { 7 print "$a , $b , $c\n"; 8 } I receive following error: Missing $ on loop variable What is wrong? I am using: perl v5.10.1 (*) built for x86_64-linux-thread-multi

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  • AddDays() not working within a while loop

    - by r0bb077
    Is there anything that stops the DateTime AddDays() method that doesn't run within a while loop. I have this simple bit of code; DateTime last_day = monthCalendar2.SelectionRange.End; DateTime first_day = new DateTime(year, month, day); //Insert dates into vector while (first_day != last_day) { dates.Add(first_day); first_day.AddDays(1); } I step through the program and first_day never changes, anyone know why?!

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  • Replace for loop with formula

    - by hamax
    I have this loop that runs in O(end - start) and I would like to replace it with something O(1). If "width" wouldn't be decreasing, it would be pretty simple. for (int i = start; i <= end; i++, width--) if (i % 3 > 0) // 1 or 2, but not 0 z += width; start, end and width have positive values

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  • Unset an array element inside a foreach loop

    - by Summer
    I'm accessing an array by reference inside a foreach loop, but the unset() function doesn't seem to be working: foreach ( $this->result['list'] as &$row ) { if ($this_row_is_boring) { unset($row); } } print_r($this->result['list']); // Includes rows I thought I unset Ideas? Thanks!

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