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When should I use double or single quotes in JavaScript?

...ariable interpolation, multi-line strings, and more. Note that JSON is formally specified to use double quotes, which may be worth considering depending on system requirements. share | improve this ...
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How can I find and run the keytool

...n by myself as below quote. It works fine. "C:\Program Files\Java\jdk1.6.0_26\bin\keytool.exe" -exportcert -alias > sociallisting -keystore "D:\keystore\SocialListing" | > "C:\cygwin\bin\openssl.exe" sha1 -binary | "C:\cygwin\bin\openssl.exe" > base64 ...
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WaitAll vs WhenAll

What is the difference between Task.WaitAll() and Task.WhenAll() from the Async CTP ? Can you provide some sample code to illustrate the different use cases ? ...
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What is C# analog of C++ std::pair?

...ect Here is my pair class public class Pair<X, Y> { private X _x; private Y _y; public Pair(X first, Y second) { _x = first; _y = second; } public X first { get { return _x; } } public Y second { get { return _y; } } public override bool E...
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What is stdClass in PHP?

... class, kind of like Object in Java or object in Python (Edit: but not actually used as universal base class; thanks @Ciaran for pointing this out). It is useful for anonymous objects, dynamic properties, etc. An easy way to consider the StdClass is as an alternative to associative array. See thi...
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How do I parse JSON with Ruby on Rails? [duplicate]

...ot identifiable in your module require 'json' #Assuming data from bitly api is stored in json_data here json_data = '{ "errorCode": 0, "errorMessage": "", "results": { "http://www.foo.com": { "hash": "e5TEd", "shortKeywordUrl": "", "shortUrl": "http://whateve...
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MySQL get the date n days ago as a timestamp

... DATE_SUB will do part of it depending on what you want mysql> SELECT DATE_SUB(NOW(), INTERVAL 30 day); 2009-06-07 21:55:09 mysql> SELECT TIMESTAMP(DATE_SUB(NOW(), INTERVAL 30 day)); 2009-06-07 21:55:09 mysql> SELECT U...
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How to have an automatic timestamp in SQLite?

... overrided OnModelCreating, inside your context class, and add this Fluent API code: modelBuilder.Entity<YourEntity>() .Property(b => b.Timestamp) .ValueGeneratedOnAddOrUpdate() .IsConcurrencyToken() .ForSqliteHasDefaultValue...
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Cleaner way to do a null check in C#? [duplicate]

... Is this really considered cleaner? – ClassicThunder Jul 16 '13 at 13:35 23 ...
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ASP.NET MVC Razor Concatenation

... You should wrap the inner part of the call with ( ): <li id="item_@(item.TheItemId)"> share | improve this answer | follow | ...