7.9 Type Inference
Explicit type declarations of values and variables help inform a static type system.For example, consider these explicit declarations of types for entities in ML:
Types for values, variables, function parameters, and return types are similarly declared in Haskell:
In some languages with first-class functions, especially statically typed languages, functions have types. Instead of ascribing a type to each individual parameter and the return type of a function, we can declare the type of the entire ...
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