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Hidden Features of MySQL
...threads_created do not grow very quickly.
PRIMARY KEY:
There can be only one AUTO_INCREMENT column per table, it must be indexed, and it cannot have a DEFAULT value
KEY is normally a synonym for INDEX. The key attribute PRIMARY KEY can also be specified as just KEY when given in a column definiti...
Why .NET String is immutable? [duplicate]
...formance win in the case in question). With mutable objects that can't be done.
No side-effects can come from passing an immutable type as a method to a parameter unless it is out or ref (since that changes the reference, not the object). A programmer therefore knows that if string x = "abc" at the ...
How to retrieve the hash for the current commit in Git?
...-parse --short HEAD returns the short version of the hash, just in case anyone was wondering.
– Thane Brimhall
Oct 25 '12 at 21:28
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How to split one string into multiple variables in bash shell? [duplicate]
...ounterparts %% and ## which find the longest anchored pattern match. If anyone has a helpful mnemonic to remember which does which, let me know! I always have to try both to remember.
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How to convert a data frame column to numeric type?
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Here goes: first two columns are character. I've deliberately called 2nd one fake_char. Spot the similarity of this character variable with one that Dirk created in his reply. It's actually a numerical vector converted to character. 3rd and 4th column are factor, and the last one is "purely" numer...
How to remove all white spaces in java [duplicate]
...and removes all the white space within that line.
the line can consist of one word or more.
14 Answers
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Method can be made static, but should it?
...'t call something "bullshit"; it implies an intent to deceive rather than honest to goodness mistake or ignorance. It's rude. I volunteer my time to help here and it really feels pointless when it is treated with disrespect. Do not tell me what to be offended by - that's my choice, not yours. Learn ...
Set active tab style with AngularJS
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Just one thing: Better set $scope.activeTab = $route.current.activetab so that you can keep the html a little cleaner.
– Christoph
Apr 15 '13 at 20:12
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What is the best data type to use for money in C#?
What is the best data type to use for money in C#?
9 Answers
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Maven build failed: “Unable to locate the Javac Compiler in: jre or jdk issue”
...wrong JRE even after updating your eclipse and project settings to the new one.
– Diana
Sep 22 '13 at 16:25
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