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How exactly does tail recursion work?

...nt one but without explicit recursion (that is, without explicit function calls). If you change the logic into something non-equivalent, you may indeed make the function loop forever in some or all cases. – Alexey Frunze Mar 20 '13 at 9:30 ...
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Why does CSS not support negative padding?

... sometimes it's not practical to edit the CSS of all children of a container. You might have generic CSS that applies to these elements across the document, and you don't want to change it for the contents of a particular container, for example. – Rolf...
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Is It Possible to NSLog C Structs (Like CGRect or CGPoint)?

... With AppKit on OS X you would need to convert to an NSPoint and then call NSStringFromPoint. For example: NSStringFromPoint(NSPointFromCGPoint(point)) – Alex Aug 22 '12 at 17:56 ...
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How to remove constraints from my MySQL table?

... Postgres, MSSQL, and Oracle all have alter table .. drop constraint. MySQL is the odd one out, it seems. – Jared Beck Mar 23 '15 at 23:48 ...
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How to check version of a CocoaPods framework

... The Podfile.lock keeps track of the resolved versions of each Pod installed. If you want to double check that FlurrySDK is using 4.2.3, check that file. Note: You should not edit this file. It is auto-generated when you run pod install or pod update ...
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How can I trim beginning and ending double quotes from a string?

... You can use String#replaceAll() with a pattern of ^\"|\"$ for this. E.g. string = string.replaceAll("^\"|\"$", ""); To learn more about regular expressions, have al ook at http://regular-expression.info. That said, this smells a bit like that you...
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Is there a generator version of `string.split()` in Python?

...plitlines chops off the trainling newline though (something that I don't really like...); if you wanted to replicated that part of the behavior, you could use grouping: (m.group(2) or m.group(3) for m in re.finditer('((.*)\n|(.+)$)', s)). PS: I guess the outer paren in the RE are not needed; I just ...
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Overriding Binding in Guice

...er be injecting mock or fake objects by hand. On the other hand, if you really want to replace a single binding, you could use Modules.override(..): public class ProductionModule implements Module { public void configure(Binder binder) { binder.bind(InterfaceA.class).to(ConcreteA.class...
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How to use timeit module

... The way timeit works is to run setup code once and then make repeated calls to a series of statements. So, if you want to test sorting, some care is required so that one pass at an in-place sort doesn't affect the next pass with already sorted data (that, of course, would make the Timsort reall...
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String concatenation: concat() vs “+” operator

...then throwing it away when you create the final String. In practice memory allocation is surprisingly fast. Update: As Pawel Adamski notes, performance has changed in more recent HotSpot. javac still produces exactly the same code, but the bytecode compiler cheats. Simple testing entirely fails bec...