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Check existence of input argument in a Bash shell script
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How do I see active SQL Server connections?
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When automating things, this query might be more useful than sp_who which is more oriented toward displaying.
– Colin
Jan 14 '13 at 20:09
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Are trailing commas in arrays and objects part of the spec?
...ertyNameAndValueList }
For arrays literals (Section 11.1.4) it is even more interesting (Update: this already existed in ES3):
ArrayLiteral :
[ Elisionopt ]
[ ElementList ]
[ ElementList , Elision_opt ]
(where Elision_opt is Elisionopt, meaning the Elision is optional)
Elision is...
How best to determine if an argument is not sent to the JavaScript function
...bits the 'most correct' behaviour, but it might not be feasible if there's more than one optional argument.
The test for undefined is next 'best' - it only 'fails' if the function is explicitly called with an undefined value, which in all likelyhood should be treated the same way as omitting the ar...
How to grep (search) committed code in the Git history
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Viewing unpushed Git commits
...n/master..HEAD --oneline" so that I can quickly find out where I am. Even more candy: for i in *; do echo $i && git ahead 2>/dev/null; done
– Jamie
Feb 28 '12 at 2:50
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Java equivalent to C# extension methods
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Extension methods can make code much more elegant compared to extra static methods from some other class. Almost all more modern languages allow for some kind existing class extension: C#, php, objective-c, javascript. Java surely shows its age here. Imagine you...
Where could I buy a valid SSL certificate? [closed]
...nfrastructure but certs from a CA that's shipped with the browser are much more secure.
– jcoffland
Jan 27 '15 at 7:39
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Elegant ways to support equivalence (“equality”) in Python classes
... Three remarks: 1. In Python 3, no need to implement __ne__ anymore: "By default, __ne__() delegates to __eq__() and inverts the result unless it is NotImplemented". 2. If one still wants to implement __ne__, a more generic implementation (the one used by Python 3 I think) is: x = self._...
View contents of database file in Android Studio
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It works, but the emulator has to be running not more than API 23. If you use API 25, then there are no contents in the file explorer
– Manos
Jan 8 '17 at 23:10
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