strip_fun : hol_type -> hol_type list * hol_type
STRUCTURE
boolSyntax
SYNOPSIS
Iteratively breaks apart function types.
DESCRIPTION
If fty is of the form ty1 -> (... (tyn -> ty) ...), then strip_fun fty returns ([ty1,...,tyn],ty). Note that 
   strip_fun(list_mk_fun([ty1,...,tyn],ty))
will not return ([ty1,...,tyn],ty) if ty is a function type.
FAILURE
Never fails.
EXAMPLE
- strip_fun (Type `:(a -> 'bool) -> ('b -> 'c)`);
> val it = ([`:a -> 'bool`, `:'b`], `:'c`) : hol_type list * hol_type
SEEALSO
list_mk_fun, dom_rng, dest_type
HOL  Kananaskis-13