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Multiple inheritance/prototypes in JavaScript
...Update (2019): The original post is getting pretty outdated. This article (now internet archive link, since domain went away) and its associated GitHub library are a good modern approach.
Original post:
Multiple inheritance [edit, not proper inheritance of type, but of properties; mixins] in Javasc...
How do you query for “is not null” in Mongo?
...: 1 }
{ "_id" : ObjectId("544540f11b5cf91c4893eb99"), "otherField" : 2 }
Now, create the sparse index on imageUrl field:
db.foo.ensureIndex( { "imageUrl": 1 }, { sparse: true } )
{
"createdCollectionAutomatically" : false,
"numIndexesBefore" : 1,
"numIndexesAfter" : 2,
"ok" : 1
}
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Programmatically align a toolbar on top of the iPhone keyboard
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Just a warning to people stumbling across this question now: the UIKeyboardBoundsUserInfoKey is now deprecated in iPhone OS 3.2. There are other, similar ones such as UIKeyboardFrameBeginUserInfoKey that give the same information.
– Stephen Darlington
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String representation of an Enum
...c's answer below that allows it to be used with Switch-Case statements, so now there is no downside to this approach :)
– deadlydog
Jan 20 '14 at 21:15
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How do I verify/check/test/validate my SSH passphrase?
...key pair, with or without a passphrase:
$ ssh-keygen -f /tmp/my_key
...
Now see if you can access the key pair:
$ ssh-keygen -y -f /tmp/my_key
Following is an extended example, showing output.
Create a new public/private key pair, with or without a passphrase:
$ ssh-keygen -f /tmp/my_key
G...
Run java jar file on a server as background process
... Short answer: it depends on the server. Long answer: as far as I know, there is no safe way to shut down a process without the process supporting such graceful shut downs. For example, if it's a web server being terminated by an external signal, there is always a possibility that some reque...
Easier way to create circle div than using an image?
...ering if there's an easier way to create circular divs than what I'm doing now.
14 Answers
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NuGet auto package restore does not work with MSBuild
...n't dated that I can see and I don't see how it says it is not recommended now? I'm on VS2013 and that button appears to work fine. I did not have the problem referenced, "So, you clicked "Enable Nuget Package Restore" and now your stuff doesn't build. The steps to fix it are painful, but less painf...
Constructors vs Factory Methods [closed]
...ibility to one of several helper subclasses, and you want to localize the knowledge of which helper subclass is the delegate
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How do I migrate a model out of one django app and into a new one?
I have a django app with four models in it. I realize now that one of these models should be in a separate app. I do have south installed for migrations, but I don't think this is something it can handle automatically. How can I migrate one of the models out of the old app into a new one?
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