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Parameter (computer programming)
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== Datatypes == In [[strongly typed programming language]]s, each parameter's [[Datatype|type]] must be specified in the procedure declaration. Languages using [[type inference]] attempt to discover the types automatically from the function's body and usage. Dynamically typed programming languages defer type resolution until run-time. Weakly typed languages perform little to no type resolution, relying instead on the programmer for correctness. Some languages use a special keyword (e.g. ''void'') to indicate that the subroutine has no parameters; in formal [[type theory]], such functions take an empty parameter list (whose type is not ''void'', but rather ''[[unit type|unit]]'').
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