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Check if Python Package is installed
... This doesn't only check; it also imports it; see also stackoverflow.com/questions/14050281/…
– Jorge Leitao
Nov 15 '14 at 8:49
6
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PHP append one array to another (not array_push or +)
How to append one array to another without comparing their keys?
12 Answers
12
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EF Code First “Invalid column name 'Discriminator'” but no inheritance
... If you don't find [NotMapped] please add a reference to: "System.ComponentModel.DataAnnotations" to the project from "Assembly Framework".
– XandrUu
Jan 23 '14 at 16:32
...
how does Array.prototype.slice.call() work?
...ay? Because when you do:
object.method();
...the object automatically becomes the value of this in the method(). So with:
[1,2,3].slice()
...the [1,2,3] Array is set as the value of this in .slice().
But what if you could substitute something else as the this value? As long as whatever you ...
How do you stash an untracked file?
...
@Kelvin what I meant in my comment was that it doesn't stash new files unless they have been staged however it does stash existing files even if they haven't been staged. Seems inconsistent to me.
– Alan Christensen
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Neither BindingResult nor plain target object for bean name available as request attribute [duplicat
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show 3 more comments
14
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How to use ConcurrentLinkedQueue?
...e instance (queue), so you can synchronize on queue to ensure atomicity of composite operations (as explained by Jared). You CANNOT do this with a ConcurrentLinkedQueue, as all operations are done WITHOUT locking on the instance (using java.util.concurrent.atomic variables). You will NOT need to do ...
How to migrate/convert from SVN to Mercurial (hg) on windows
...ver.
I also have TortoiseHG installed as well as the CollabNet Subversion Command-Line Client.
<Enable Convert Extension w/ Tortoise Hg 2>
Many thanks to bgever for pointing out in the comments that with TortoiseHg 2.0, enabling the convert extension is easier than ever. As he says
Wit...
Allowed characters in Linux environment variable names
... across systems conforming to
IEEE Std 1003.1-2001, the value shall
be composed of characters from the
portable character set (except NUL
and as indicated below).
So names may contain any character except = and NUL, but:
Environment variable names used by the utilities in the Shell and...
Global variables in AngularJS
...ntrol over where those are used and exposed.
Using services is a bit more complex, but not that much, here is an example:
var myApp = angular.module('myApp',[]);
myApp.factory('UserService', function() {
return {
name : 'anonymous'
};
});
and then in a controller:
function MyCtrl($sco...