Formless.Class.Initial

class Initial v  where

A type class that provides initial values for form fields. While superficially similar to Haskell's Default type class, this class is only meant for the purposes of defining initial form values. If you need a default value for a field in your form, you are better off defining it as a Maybe field and providing a default as part of validation.

In general, if you find yourself reaching for this type class without defining your form as a row and generating your form spec from it, then you are probably not doing what you intend.

Members

• initial :: v

Instances

• Initial Unit
• Initial Boolean
• Initial Int
• Initial Number
• Initial String
• Initial Ordering
• Initial (Maybe a)
• Initial (Array a)
• Initial (List a)
• (Ord k) => Initial (Map k v)
• (Ord a) => Initial (Set a)
• (Monoid b) => Initial (a -> b)
• (Initial a, Initial b) => Initial (Tuple a b)
• (RowToList row list, MonoidRecord list row row) => Initial (Record row)