Advantage of var keyword in C# 3.0 [duplicate]

Answer 1

• Linq expressions don't return a predefined type, so you need a 'generic' variable declaration keyword to capture that and other places where anonymous types are used.
• Used carefully, it can make refactoring easier by decoupling a method's return type from the variable that captures it.
• Having to put the same name on the same line twice for the same statement is really kind of silly. It's a pain to type something like this:

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ReallyLongTypeName MyVariable = new ReallyLongTypeName();