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Cookbook/Compilers and interpreters

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(first step to turn this page from an arbitrary tutorial to a cookbook chapter)
(Checking Types)

Revision as of 08:11, 31 August 2009


2 GHCi

3 Checking Types

To check the type of an expression or function, use the command `:t'

Prelude> :t x
x :: Integer
Prelude> :t "Hello"
"Hello" :: [Char]