Adam D. Ruppe:

Of course, sometimes the type still matters,


Haskell programmers have a very different attitude toward types. They do a kind of type-driven programming, even in small programs. They lay down the data types (like the algebraic data types that describe the data structures of the problem), and then let the compiler, the type errors (and even a recent feature of the compiler named type holes) to write down the solutions and be guided toward correct code. This is kind of the opposite of trying to remove types using dynamic typing, and it's also far from the kind of strong static typing you see in Ada language.

Bye,
bearophile

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