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What is the relationship between UIView's setNeedsLayout, layoutIfNeeded and layoutSubviews?

... on the relationship between UIView's setNeedsLayout , layoutIfNeeded and layoutSubviews methods? And an example implementation where all three would be used. Thanks. ...
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Java - Including variables within strings?

... I'm not sure if that is attractive enough for you, but it can be quite handy. The syntax is the same as for printf and java.util.Formatter. I've used it much especially if I want to show tabular numeric data. share ...
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What is the difference between Caching and Memoization?

I would like to know what the actual difference between caching and memoization is. As I see it, both involve avoiding repeated function calls to get data by storing it . ...
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How to pull request a wiki page on GitHub?

...t isn't open for editing. Then I forked the project, edited it on "my end" and tried to do a pull request. It turns out, the wiki isn't in the project, and there isn't a way to commit changes to it. ...
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Detect if stdin is a terminal or pipe?

... On POSIX there is no io.h and for isatty() you need to include unistd.h. – maxschlepzig Sep 29 '11 at 13:22 ...
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Regex for numbers only

... Use the beginning and end anchors. Regex regex = new Regex(@"^\d$"); Use "^\d+$" if you need to match more than one digit. Note that "\d" will match [0-9] and other digit characters like the Eastern Arabic numerals ٠١٢٣٤٥٦٧٨٩. ...
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What is the proper way to check if a string is empty in Perl?

... comparisons in Perl, use eq or ne: if ($str eq "") { // ... } The == and != operators are numeric comparison operators. They will attempt to convert both operands to integers before comparing them. See the perlop man page for more information. ...
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How do I test an AngularJS service with Jasmine?

...ce is defined. Then, we can ask to the new injector object for the service and its only then when the service is finally instantiated. Something like this works: describe('myService test', function(){ describe('when I call myService.one', function(){ it('returns 1', function(){ ...
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cannot convert data (type interface {}) to type string: need type assertion

I am pretty new to go and I was playing with this notify package. 4 Answers 4 ...
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Moving multiple files in TFS Source Control

I'm using Team Foundation Server 2008 (SP 1) and I need to move multiple files from one folder to another (to retain file history). In addition to Team Explorer (with SP 1) I've also got the latest TFS Power Tools (October 2008) installed (for Windows Shell integration). ...