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Select unique or distinct values from a list in UNIX shell script
I have a ksh script that returns a long list of values, newline separated, and I want to see only the unique/distinct values. It is possible to do this?
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Preventing an image from being draggable or selectable without using JS
Does anyone know of a way to make an image not draggable and not selectable -- at the same time -- in Firefox, without resorting to Javascript? Seems trivial, but here's the issue:
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R - Markdown avoiding package loading messages
I have been using Knitr via R-Studio, and think it is pretty neat. I have a minor issue though. When I source a file in an R-Chunk, the knitr output includes external comments as follows:
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How to insert a new line in Linux shell script? [duplicate]
...line.
Another alternative to use a single echo statement with the -e flag and embedded newline characters \n:
echo -e "Create the snapshots\n\nSnapshot created"
However, this is not portable, as the -e flag doesn't work consistently in all systems. A better way if you really want to do this is u...
Removing duplicate objects with Underscore for Javascript
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The "'_.pluck' callback shorthand" only works if you pass a value for isSorted (e.g. _.uniq(a, false, 'a')) I pinged github/bestiejs/lodash and they said the issue was fixed on edge. So if you're not using a function, make sure you have the latest. This ...
Checkout remote branch using git svn
...a svn repository using git svn. Now I need to checkout one of the branches and track it. Which is the best way to do it?
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What are the GCC default include directories?
...e a very simple source file with gcc I don't have to specify the path to standard include files such as stdio or stdlib.
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Postgres: How to do Composite keys?
I cannot understand the syntax error in creating a composite key. It may be a logic error, because I have tested many varieties.
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Remove an Existing File from a Git Repo
...velopment log (log/development.log) in our repositories. Is this possible and how can I do it?
3 Answers
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Returning JSON from PHP to JavaScript?
...rialising function.
json_encode
json_encode
Please use that if you can and don't suffer Not Invented Here syndrome.
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