ActionScript 3 Language Specification 
ActionScript 3 Language Specification |
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| ActionScript 3.0 Language Specification > 8 Functions > 8.2 Function signatures | |||
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A function signature includes the number and types of its parameters and its result type. Like variable type annotations, the types of a function signature affect the implicit conversion of argument and return values when calling to and returning from a function. Function signatures are also used to match inherited methods to methods in a derived class.
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Current page: http://livedocs.adobe.com/specs/actionscript/3/as3_specification67.html