CODEWITHSUNDEEP
haskellmonomorphism-restriction
Pratik Deoghare
Pratik Deoghare

Reputation: 37212

What is XNoMonomorphismRestriction?

This page usages

$ ghci -XNoMonomorphismRestriction

to start the haskell interpreter.

What does XNoMonomorphismRestriction switch mean?

Upvotes: 15

Views: 1239

Answers (1)

sepp2k
sepp2k

Reputation: 370415

It turns off the Monomorphism restriction, which restricts values which are not defined using "function notation"¹ to have a non-polymorphic type.

¹ By "not using function notation" I mean that they're defined as foo = something and not foo bar = something, i.e. the definition does not contain explicit arguments.

Upvotes: 19

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