protolude

PureScriptの実装に使われている

Stringを使用しない

部分関数を使用しない

e.g. head :: Foldable f => f a -> Maybe a

Compiler warning on bottoms.

Polymorphic string IO functions.

Polymorphic show.

Automatic string conversions.

Types for common data structures in scope.

Types for all common string types (Text/ByteString) in scope.

Banishes impure exception throwing outside of IO.

StateT/ReaderT/ExceptTがdefaultで入っている

Foldable / Traversableの関数がdefaultで入っている

Unsafe functions are prefixed with "unsafe" in separate module.

Compiler agnostic, GHC internal modules are abstracted out into Base.

sum and product are strict by default.