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Array versus linked-list
... just a matter of changing what points to what. Shuffling an array is more complicated and/or takes more memory.
As long as your iterations all happen in a "foreach" context, you don't lose any performance in iteration.
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Class vs. static method in JavaScript
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How can I calculate the number of lines changed between two commits in git?
Is there any easy way to calculate the number of lines changed between two commits in git?
11 Answers
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When to use -retainCount?
...ruly worthless method.
edit
Please everyone go to http://bugreport.apple.com and request that -retainCount be deprecated. The more people that ask for it, the better.
edit #2
As an update,[NSNumber numberWithInt:1] now has a retainCount of 9223372036854775807. If your code was expecting it to ...
How to get the primary IP address of the local machine on Linux and OS X? [closed]
I am looking for a command line solution that would return me the primary (first) IP address of the localhost, other than 127.0.0.1
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Why isn't ProjectName-Prefix.pch created automatically in Xcode 6?
...cies clear. When you reuse your view controller in a new project (which is common if you build your controllers well), you will immediately know what it requires. This is especially important for categories, which can make code very hard to reuse if they're implicit.
The PCH file isn't there to get...
Finding all possible combinations of numbers to reach a given sum
How would you go about testing all possible combinations of additions from a given set N of numbers so they add up to a given final number?
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What is the difference between YAML and JSON?
...ta processes. For example, it is included by default in the C-based OpenCV computer vision package, whereas JSON is not.
You will find C libraries for both JSON and YAML. YAML's libraries tend to be newer, but I have had no trouble with them in the past. See for example Yaml-cpp.
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How do I change tab size in Vim?
...ecific settings when editing a particular filetype, you'll want to use autocommands:
autocmd Filetype css setlocal tabstop=4
This will make it so that tabs are displayed as 4 spaces. Setting expandtab will cause Vim to actually insert spaces (the number of them being controlled by tabstop) when you...
How to do a regular expression replace in MySQL?
...KE).
Regular expression support has been reimplemented using International Components for Unicode (ICU), which provides full Unicode support and is multibyte safe. The REGEXP_LIKE() function performs regular expression matching in the manner of the REGEXP and RLIKE operators, which now are synonyms ...