Language.Elm.Simplification

Documentation

simplifyDefinition :: Definition -> Definition

Perform simplifyExpression on all Expressions inside the given Definition.

simplifyExpression :: Expression v -> Expression v

Run the following simplifications on the given expression:

• identity x = x

• (f >> g) x = g (f x)

• f >> identity = f

• identity >> f = f

• (f << g) x = f (g x)

• f << identity = f

• identity << f= f

• identity <| x = x

• x |> identity = x

• x :: [y, z, ...] = [x, y, z, ...]

• Calls to String.join, String.concat, List.concat, and ++ with known arguments are simplified. For example, String.join "" [Config.api, "endpoint"] = Config.api ++ "endpoint"

• (x. e x) = e

• Inline x in e' in let x = e in e' if either:
• e is freely duplicable, e.g. it's just a variable or a numeric literal.
• x occurs zero or one times in e'.
• case e of ... prefixBranches pat -> branch ... is simplified to let xs = es in branch provided that e matches none of prefixBranches and that it matches pat.
• case-of-case
• { n = e, ... }.n = e