String.Empty vs ""

[nerobotParticipant]

Q: About empty strings.

We can use empty string in two ways

Monkey

1. Local s:="" 2. Local s:=String.Empty

1 2	1. Local s:="" 2. Local s:=String.Empty

where

Monkey

Struct String Const Empty:="" End

1 2 3

Struct String   Const Empty:="" End

What way is better or both are equals? First one create str every time, but second one don’t.

C# string has const named Empty.

[Mark SiblyKeymaster]

There is special case handling for empty strings in mx2 which means no allocation occurs, so initializing a string to empty works pretty much the same no matter how you do it, eg: Local t:String=Null; Local t:String=””; Local t:String.

Initializing from an existing string will probably be a teeny, tiny bit slower, as there’s an extra ‘read’ in there, but not so much slower that you should avoid it if it makes things clearer/tidier.

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