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What does `kill -0 $pid` in a shell script do?
Basically, what signal does '0' represent, because here I see SIGNAL numbers starting from 1.
6 Answers
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Get the value of checked checkbox?
...please explain? The guy who asked the question used class in the input actually. It will be good if you can provide the full code so I can understand from where you got the id
– devfaysal
Apr 26 '16 at 2:41
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Declaring javascript object method in constructor function vs. in prototype [duplicate]
...ch.
If you're creating lots of Dogs, use the prototype approach. This way, all "instances" (i.e. objects created by the Dog constructor) will share one set of functions, whereas the constructor way, a new set of functions is created every time the Dog constructor is called, using more memory.
If you...
Django - “no module named django.core.management”
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It sounds like you do not have django installed. You should check the directory produced by this command:
python -c "from distutils.sysconfig import get_python_lib; print get_python_lib()"
To see if you have the django packages in there.
If there's no django fo...
Node.js + Express: Routes vs controller
...up that way. A great example can be found in the Express examples folder, called mvc. If you look at lib/boot.js, you can see how they've set up the example to require each file in the controllers directory, and generate the Express routes on the fly depending on the name of the methods created on t...
How to randomly select rows in SQL?
...) value to scale to the min-max values. That way you do not have to define all of the @randomId1...n parameters. I've included an example below using a CTE to populate the initial table.
DECLARE @NumItems int = 100;
DECLARE @minValue int;
DECLARE @maxValue int;
SELECT @minValue = min(id), @maxValu...
Is there a git-merge --dry-run option?
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cool! But how do I undo this operation? It says "all conflicts are fixed but you are still merging". Calling git checkout . doesn't revert the files to pre-merge status.
– J-bob
Dec 8 '14 at 16:38
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Setting Environment Variables for Node to retrieve
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@mibbit yes, that's what dotenv is all about, as it will read your .env file and apply it.
– balexandre
Feb 21 '19 at 10:39
add a comme...
javascript toISOString() ignores timezone offset [duplicate]
...u. Just a note: it does keep "Z" at the end of the string, which is technically wrong, but easy to edit out.
– Steve Gon
Feb 7 '19 at 19:22
2
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WPF Auto height in code
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Perhaps this link will help you.
At times, you may want to
programmatically set the Height or
Width of a WPF element to Auto in
code. To do this, just use the
Double.NaN (Not a Number) value.
For example, in C#:
this.txtName.Width = Double.NaN;
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