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How do you sort an array on multiple columns?
...for the ordering. The thing you may be missing is that mysortfunction is called multiple times when you use Array.sort until the sorting is completed.
– dcp
Apr 23 '15 at 10:59
3
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How do you do a simple “chmod +x” from within python?
... non-pythonic answer that may be a little more readable: subprocess.check_call(['chmod', '+x', 'somefile']) and let's you more easily do operations like a+rx.
– Trevor Boyd Smith
Aug 6 at 15:28
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Make an existing Git branch track a remote branch?
... 1.7.0 (before 1.8.0):
git branch --set-upstream foo upstream/foo
Notes:
All of the above commands will cause local branch foo to track remote branch foo from remote upstream.
The old (1.7.x) syntax is deprecated in favor of the new (1.8+) syntax. The new syntax is intended to be more intuitive a...
What is “incremental linking”?
I've looked at Microsoft's MSDN and all around the web, but I still haven't been able to get a really good idea of what it is.
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Capture Stored Procedure print output in .NET
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Are you catching all messages produced within sql server with that event ? Is it possible that this event will also catch some other messages, not produced by that stored procedure ?
– FrenkyB
Mar 18 '15...
How to invert a grep expression
The following grep expression successfully lists all the .exe and .html files in the current directory and sub directories.
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IntelliJ and Tomcat…changed files are not automatically recognized by Tomcat
...r "Update resources" or "Update Classes and Resources"
Update resources: All changed resources (that is, all application components other than the classes) will be updated.
Update classes and resources: All changed resources will be updated; changed classes will be recompiled. Note that whether th...
JSLint: was used before it was defined
...e comment can contain a comma separated list of names. Each name can optionally be followed by a colon and either true or false, true indicating that the variable may be assigned to by this file, and false indicating that assignment is not allowed (which is the default). The directive respects funct...
Why does typeof array with objects return “object” and not “array”? [duplicate]
...data);
But the most reliable way is:
isArr = Object.prototype.toString.call(data) == '[object Array]';
Since you tagged your question with jQuery, you can use jQuery isArray function:
var isArr = $.isArray(data);
shar...
How to find the size of an array in postgresql
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cardinality returns the number of all the elements in a single or multidimensional array. So select cardinality(ARRAY[[1,2], [3,4]]); would return 4, whereas select array_length(ARRAY[[1,2], [3,4]], 1) would return 2. If you're counting the first dimension, a...