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  • MySQL: How to do a conditional update?

    - by Tom
    Hi, I'm trying to a create an update statement along the following lines: TABLE car: id | owner_id | type | status An owner can have multiple cars. UPDATE car c SET c.type = 1 WHERE c.owner_id IN ($ids) AND c.status = [1 IF IT EXISTS, ELSE 0] $ids is reasonably small (under 50 values). It seems simple but I can't seem to get my head around it because I can't use a SELECT subquery with an UPDATE to the same table. Anyone? Thanks

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  • Copying a file with PHP Command

    - by Tom
    Hi, I'm having a problem using the copy function in PHP, what is wrong with it? I get the error; Parse error: syntax error, unexpected T_VARIABLE On the bottom line; $targetDir = 'file.txt'; $targetDir2 = 'file2.txt'; copy($targetDir, $targetDir2); Thanks The entire file is; <?PHP $targetDir = 'file.txt'; $targetDir2 = 'file2.txt'; copy($targetDir, $targetDir2); ?> copy and pasted from the doc.

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  • Setup a git external for remote repo

    - by Tom
    I'd create a repo which pulls in a remote repo, let's say I'd like to setup jQuery as a submodule for example git://github.com/jquery/jquery.git What would be the process of creating a repo with jQuery as a submodule and adding my own external as a remote repo. Also once this is setup, if I push / pull to my own remote, will the external remain intact?

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  • Is flash's geturl(...) spiderable by google?

    - by tom
    If I made a homepage with an embedded .swf which had buttons that linked to other html pages on my website using the getUrl() function, would those links be spiderable by google? Or should I also put in text links outside of the .swf (which would ruin the design a bit)? I know a lot of people will argue I shouldn't have flash as the main content on the homepage (and their comments are appreciated), but bear in mind, that's not my question.

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  • How can I know which website the member has visited previously?

    - by Tom
    So, I can use getenv('HTTP_REFERER') to get an URL which the member has visited previously, but it works only if it's the same website. I want this: for example. the member firstly visits google.com then goes to my website. I want to show him, that previously he visited a google.com website. How can I do it if it's possible?

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  • C# log base 10 and rounding up to nearest power of 10?

    - by Tom
    Hi, if i have a number between 100 and 1000 i want to get the value 3 because 10^3 = 1000. Likewise, if i had a number between 10 and 100 i would want to get the value 2, because 10^2 is 100. Incase you're wondering, its to do with calculating a probability and i always need to divide through by 10^value, to keep the probability between 0 and 1. For example if i calculate 9256, i need to divide through by 10^4, so that i get a probability of 0.92 I'm not sure how to do the rounding up and how to do the base 10, could someone please help?

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  • Many-to-many relationships examples

    - by Tom
    I haven't found any MYSQL many-to-many relationships examples here and in google. What I am looking is to see a very simple example with php+mysql showing database's results. Can anybody write a very simple example?

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  • What does this Java generics paradigm do and what is it called?

    - by Tom
    I'm looking at some Java classes that have the following form: public abstract class A <E extends A<E>> implements Comparable <E> { public final int compareTo( E other ) { // etc } } public class B extends A <B> { // etc } public class C extends A <C> { // etc } My usage of "Comparable" here is just to illustrate a possible use of the generic parameter "E". Does this usage of generics/inheritance have a name? What is it used for? My impression is that this allows the abstract class to provide a common implementation of a method (such as compareTo) without having to provide it in the subclasses. However, in this example, unlike an inherited method it would restrict subclasses to invoking compareTo on other instances of the same subclass, rather than any "A" subclass. Does this sound right? Anyway, just curious if any gurus out there have seen this before and know what it does. Thanks!

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  • jquery elementby class and set name

    - by tom
    Hello can some one help me with code to get element by classname and also change the name currently ive tried $('selected').attr("name", 'blah blah'); and also $('.selected').attr("name", 'blah blah'); noneof these work thanks

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  • jquery elements by class

    - by tom
    Hi there im trying to get all dropdown lists by class and change their names, my code is not working, is there something i am missing? $(document).ready(function () { $('.mutuallyexclusive').live("click", function () { checkedState = $(this).attr('checked'); $('.mutuallyexclusive:checked').each(function () { $(this).attr('checked', false); $(this).attr('name', 'chk'); }); $(this).attr('checked', checkedState); if (checkedState) { var prev = $(this).prev('select').attr("name", 'cat.parent_id'); elements = $('select.selected'); elements.each(function () { $(this).attr("name", "bbb"); }); } else { var prev = $(this).prev('select').attr("name", 'dd'); } }); });

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  • Protecting from crashes (beyond bounds) with [object objectAtIndex:]

    - by Tom
    Hi! I'd like to know if there's a way to verify if an index exists before getting it. So it'd be way to protect my code against: *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFArray objectAtIndex:]: index (2) beyond bounds (0)' Like in PHP you can do: isset($object[10]); and it'll return true if it exists. Is there such a method in Objective-C/Cocoa? Thanks!

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  • Calculate needed size for a TLabel

    - by Tom
    Ok, here's the problem. I have a label component in a panel. The label is aligned as alClient and has wordwrap enabled. The text can vary from one line to several lines. I would like to re-size the height of the the panel (and the label) to fit all the text. How do I get the necessary height of a label when I know the text and the width of the panel?

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