CODEWITHSUNDEEP
scalaread-eval-print-loop
Srinivas
Srinivas

Reputation: 2100

How do I know the type of a scala function

I would like to know the type of a scala function in repl. In Haskell it is :t, can anyone tell what it's equivalent in scala?

Upvotes: 5

Views: 77

Answers (1)

Yuval Itzchakov
Yuval Itzchakov

Reputation: 149558

There are two ways to know. Once you type in the expression, it tells the type:

scala> val f: Int => Int => Int = a => b => a + b
f: Int => (Int => Int) = $$Lambda$1143/444402847@2b1a901d

If you have an existing value and want to know its type, you use :type

scala> :type f
Int => (Int => Int)

Or as others mention, :t also works similar to Haskell:

scala> :t f
Int => (Int => Int)

Upvotes: 8

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