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type literal = LiteralInt of int | LiteralBool of bool
(* Lambda Calculus definition *)
type value =
| ValueLiteral of literal
| ValueVariable of string
| ValueFunction of string * value
| ValueApplication of value * value
| ValueVarApplication of string * value
| ValueBinder of string * value * value
module FromString = Map.Make (String)
type _type =
| TypeInt
| TypeBool
| TypeVariable of string
| TypeArrow of _type * _type
type quantified_type = QuantifiedType of string list * _type
type set = bool FromString.t
type substitution = _type FromString.t
type env = quantified_type FromString.t
type inference = Inference of substitution * _type
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