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How to use concerns in Rails 4
...ference where one talk was about DCI and finally I understood a little bit more about its philosophy. Changed the text so it doesn't mention DCI at all.
– yagooar
Mar 10 '13 at 18:53
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jQuery/Javascript function to clear all the fields of a form [duplicate]
...y's trigger():
$('#myForm').trigger("reset");
UPDATE
If you need to do more than reset the form to its default state, you should review the answers to Resetting a multi-stage form with jQuery.
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What is the difference between a definition and a declaration?
...ferences to and complains about a missing symbols. If you define something more than once, then the linker doesn't know which of the definitions to link references to and complains about duplicated symbols.
Since the debate what is a class declaration vs. a class definition in C++ keeps coming u...
How to check if a variable is null or empty string or all whitespace in JavaScript?
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A non-jQuery solution that more closely mimics IsNullOrWhiteSpace, but to detect null, empty or all-spaces only:
function isEmptyOrSpaces(str){
return str === null || str.match(/^ *$/) !== null;
}
...then:
var addr = ' ';
if(isEmptyOrSpaces(a...
How do I programmatically determine operating system in Java?
...}
That way, every time you ask for the Os, you do not fetch the property more than once in the lifetime of your application.
February 2016: 7+ years later:
There is a bug with Windows 10 (which did not exist at the time of the original answer).
See "Java's “os.name” for Windows 10?"
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Can you attach a UIGestureRecognizer to multiple views?
...sture recognizer once, I'm not sure if this is a bug or it just needs some more documentation.
12 Answers
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What does the “__block” keyword mean?
... done inside the block are also visible outside of it.
For an example and more info, see The __block Storage Type in Apple's Blocks Programming Topics.
The important example is this one:
extern NSInteger CounterGlobal;
static NSInteger CounterStatic;
{
NSInteger localCounter = 42;
__bloc...
How to overcome “datetime.datetime not JSON serializable”?
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Application Loader stuck at “Authenticating with the iTunes store” when uploading an iOS app
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thank you, very much! None of the more upvoted and accepted solutions worked for me, but this one does. Apple needs to learn how to properly communicate error messages. Stuck on authenticating is not useful at all.
– Domen Grabec
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MySQL root access from all hosts
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