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Create a custom callback in JavaScript

All I need to do is to execute a callback function when my current function execution ends. 10 Answers ...
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optional local variables in rails partial templates: how do I get out of the (defined? foo) mess?

... Though I really like the compact syntax of hgimenez's suggestion (above), this approach has the advantage of being very clear re: what's going on. (Still has the downside of not letting you pass nil as a value for the local) ...
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What is meant by immutable?

... without worrying that someone else is going to change its contents. Especially when dealing with concurrency, there are no locking issues with objects that never change e.g. class Foo { private final String myvar; public Foo(final String initialValue) { this.myvar = initi...
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Jasmine JavaScript Testing - toBe vs toEqual

...y word for it; see the source code for toBe. But b and c represent functionally equivalent objects; they both look like { foo: { bar: 'baz' } } Wouldn't it be great if we could say that b and c are "equal" even if they don't represent the same object? Enter toEqual, which checks "deep equality" (i....
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How do I rename all folders and files to lowercase on Linux?

..." "${DST}" || echo "${SRC} was not renamed" fi done P.S. The latter allows more flexibility with the move command (for example, "svn mv"). share | improve this answer | ...
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jQuery access input hidden value

...$(':hidden#foo').val()); alert($('input:hidden[name=zyx]').val()); Those all mean the same thing in this example. share | improve this answer | follow | ...
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How to Load an Assembly to AppDomain with all references recursively?

...e I wrote to solve this problem: github.com/jduv/AppDomainToolkit. Specifically, look at the LoadAssemblyWithReferences method in this class: github.com/jduv/AppDomainToolkit/blob/master/AppDomainToolkit/… – Jduv Mar 14 '13 at 14:44 ...
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Python function overloading

... What you are asking for is called multiple dispatch. See Julia language examples which demonstrates different types of dispatches. However, before looking at that, we'll first tackle why overloading is not really what you want in python. Why Not Overl...
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How do I know if a generator is empty from the start?

..., there is no simple way. There are a whole lot of work-arounds. There really shouldn't be a simple way, because of what generators are: a way to output a sequence of values without holding the sequence in memory. So there's no backward traversal. You could write a has_next function or maybe eve...
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Get top n records for each group of grouped results

... Here is one way to do this, using UNION ALL (See SQL Fiddle with Demo). This works with two groups, if you have more than two groups, then you would need to specify the group number and add queries for each group: ( select * from mytable where `group` = 1 ...