Abstract
Rust Function
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For Function Signature, you must declare the Datatype of each parameter
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So Compiler almost never needs you to use the function elsewhere in the code to figure out what type you mean. The compiler is also able to give more helpful error messages if it knows what types the function expects.
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Return the last Expression implicitly
Terminologies
Function Signature
- Refers to the declaration of a function
- Including its name, return Datatype, and parameter datatype