@hackage express1.0.18

Dynamically-typed expressions involving function application and variables.

Express is a library for manipulating dynamically typed Haskell expressions. It's like Data.Dynamic but with support for encoding function aplication and variables.

It provides the Expr type and over a hundred functions for building, evaluating, comparing, folding, canonicalizing and matching Expr s. See the README and Haddock documentation for more details.