CODEWITHSUNDEEP
printingocaml
SoftTimur
SoftTimur

Reputation: 5540

A short cut for "Printf.fprintf"

As I use a lot Printf.fprintf stdout ... in my programs, I would like to rename it by a shorter function. So I write:

let p = Printf.fprintf stdout

And I would hope p "%s" "string" works. However, the compilation gives an error:

File "lib/utility.ml", line 27, characters 8-29:
Error: The type of this expression, ('_a, out_channel, unit) format -> '_a,
       contains type variables that cannot be generalized

Does anyone have an idea to rename it so that the application could be as simple as possible?

Upvotes: 2

Views: 110

Answers (1)

Jeffrey Scofield
Jeffrey Scofield

Reputation: 66823

I think it will work if you eta-expand your definition:

let p fmt = Printf.fprintf stdout fmt

Upvotes: 1

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