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What's a concise way to check that environment variables are set in a Unix shell script?
...by the wayside. But if you come across a script that starts with a colon, now you will know why.
Position of double quotes
blong asked in a comment:
Any thoughts on this discussion? https://github.com/koalaman/shellcheck/issues/380#issuecomment-145872749
The gist of the discussion is:
… Howe...
Finding the path of the program that will execute from the command line in Windows
...n folder c:\abcd\happy\ on the system. The folder is on the system path. Now suppose there is another program on the system that's also called X.EXE but is installed in folder c:\windows\ .
...
In Django - Model Inheritance - Does it allow you to override a parent model's attribute?
...ent question since I'm just saying that the code posted in the question is now working since Django 1.10. Note that according to the link he posted about what he wanted to use, he has forgotten to make the Place class abstract.
– qmarlats
Jan 28 '17 at 15:50
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difference between use and require
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Do you know if there is there any difference in the end between (:use foo :only [bar]) and (:require foo :refer [bar])? Seems odd to have two ways to do this.
– overthink
Jul 4 '13 at 1:03
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What is the difference between jQuery's mouseout() and mouseleave()?
...eaves the tooltip won't be displayed. This will work 99% of the time.
But now let's say the element you have a tooltip attached to is a button with a click event, and let's also assume this button prompts the user with either a confirm or alert box. The user clicks the button and the alert fires. T...
MongoDB mongorestore failure: locale::facet::_S_create_c_locale name not valid
...-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
Now mongo also should do fine.
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Most efficient way to check for DBNull and then assign to a variable?
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Old now, but I've recently seen a number of cases where this was exactly what the profiler said to fix. Imagine evaluating large data sets, where every cell needs to make this check. Optimizing that can can reap big rewards. But ...
Load “Vanilla” Javascript Libraries into Node.js
...QuadTree' which is all we want to export */
exports.QuadTree = QuadTree
Now you can use your quadtree module like any other node module...
var qt = require('quadtree');
qt.QuadTree();
I like this method because there's no need to go changing any of the source code of your 3rd party library--...
Execute combine multiple Linux commands in one line
...for example myscript, and make it executable:
chmod +x myscript
You can now execute that script like other programs on the machine. But if you don't place it inside a directory listed in your PATH environment variable (for example /usr/local/bin, or on some Linux distributions ~/bin), then you wi...
Can I use view pager with views (not with fragments)
... me a lot... i extended PageAdapter instead of FragmentPageAdapter........ now its work fine.....
– ranjith
Sep 10 '13 at 4:39
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