gleam/function

Values

pub fn identity(x: a) -> a

Takes a single argument and always returns its input value.

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pub fn tap(arg: a, effect: fn(a) -> b) -> a

Deprecated: This function has been deprecated. You can bind the value you want to tap to a variable instead.

Takes an argument and a single function, calls that function with that argument and returns that argument instead of the function return value.

Useful for running synchronous side effects in a pipeline.