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Get the last item in an array

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What are the differences between JSON and JavaScript object? [duplicate]

...the property name) gives no problems: var o = { "if": "foo" }; So for "compatibility" (and easy eval'ing maybe?) the quotes are mandatory. The data types in JSON are also restricted to the following values: string number object array A literal as: true false null The grammar of Strings c...
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How can I have grep not print out 'No such file or directory' errors?

... dir, 'aaa.txt' and 'a b.txt', both containing the string 'some text'. The command /bin/ls -1 | xargs grep 'some text' will give you "no such file or directory" because it breaks up 'a b.txt' into 2 args. If you suppress, you won't notice you missed a file. – Kelvin ...
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Add a column to a table, if it does not already exist

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How do I change an HTML selected option using JavaScript?

... @utdev here is a solution for multiple selecting stackoverflow.com/a/1296068/1251563 tip: you need to use a loop – breq Mar 17 '17 at 11:44 ...
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JavaScript chop/slice/trim off last character in string

... In case anybody is wondering, substring is 11% faster than slice. jsperf.com/js-slice-vs-substring-test – BenR Apr 16 '14 at 15:53 ...
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MVVM: Tutorial from start to finish?

... Dan Crevier's DataModel-View-ViewModel pattern series (similar to MVVM) Composite WPF (Prism) Resources Though not exactly what you asked, it is the natural progression with WPF and MVVM. Codeplex: Composite WPF (Prism) Silver Bay Labs has a number of great videos on learning Prism Channel 9: 1...
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Matlab: Running an m-file from command-line

... A command like this runs the m-file successfully: "C:\<a long path here>\matlab.exe" -nodisplay -nosplash -nodesktop -r "run('C:\<a long path here>\mfile.m'); exit;" ...
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How to set a Header field on POST a form?

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ImportError: No module named requests

... Requests is not a built in module (does not come with the default python installation), so you will have to install it: OSX/Linux Use $ sudo pip install requests (or pip3 install requests for python3) if you have pip installed. If pip is installed but not in your p...