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Are trailing commas in arrays and objects part of the spec?
...s: ECMAScript 5 and ECMAScript 3
Section 11.1.5 in the ECMAScript 5 specification:
ObjectLiteral :
{ }
{ PropertyNameAndValueList }
{ PropertyNameAndValueList , }
So yes, it is part of the specification.
Update: Apparently this is new in ES5. In ES3 (page 41), the definition was...
How do I change the UUID of a virtual disk?
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It would be nice if the VirtualBox UI gave the option to generate a new UUID when you tried to open a disk that's already known. Honestly I don't really use the disk manager for anything, I'd rather VirtualBox just treat virtual disks as file...
How do I use the new computeIfAbsent function?
I very much want to use Map.computeIfAbsent but it has been too long since lambdas in undergrad.
4 Answers
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How to restart a rails server on Heroku?
...cutable aliases
Then you can just type hra app_name
You can restart a specific remote, e.g. "staging" with:
heroku restart -a app_name -r remote_name
Alternatively if you are in the root directory of your rails application you can just type
heroku restart
to restart that app and and you can c...
jQuery Validate Plugin - How to create a simple custom rule?
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I take it that this.optional(element) returns true if element is null?
– tnunamak
Jan 2 '11 at 18:40
12
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Cmake doesn't find Boost
...Make, but it fails to find Boost libraries even though they are in the specified folder. I have specified Boost_INCLUDE_DIR , Boost_LIBRARYDIR and BOOST_ROOT , but I still get an error saying that CMake is not able to find Boost. What could be the reason of such error?
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String variable interpolation Java [duplicate]
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If you're using Java 5 or higher, you can use String.format:
urlString += String.format("u1=%s;u2=%s;u3=%s;u4=%s;", u1, u2, u3, u4);
See Formatter for details.
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HTML Submit-button: Different value / button-text?
... 'add tag' , however, the web page is in Swedish, so I'd like to have a different button text .
5 Answers
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How do you sort a dictionary by value?
....Value);
}
);
Since you're targeting .NET 2.0 or above, you can simplify this into lambda syntax -- it's equivalent, but shorter. If you're targeting .NET 2.0 you can only use this syntax if you're using the compiler from Visual Studio 2008 (or above).
var myList = aDictionary.ToList();
my...
Easiest way to read from and write to files
There are a lot of different ways to read and write files ( text files , not binary) in C#.
12 Answers
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