new_binder : string * hol_type -> unit

SYNOPSIS

Sets up a new binder in the current theory.

DESCRIBE

A call new_binder(bnd,ty) declares a new binder bnd in the current theory. The type must be of the form ('a -> 'b) -> 'c, because being a binder, bnd will apply to an abstraction; for example

   !x:bool. (x=T) \/ (x=F)

is actually a prettyprinting of

   $! (\x. (x=T) \/ (x=F))

FAILURE

Fails if the type does not correspond to the above pattern.

EXAMPLE

   - new_theory "anorak";
   () : unit

   - new_binder ("!!", (bool-->bool)-->bool);;
   () : unit

   - Term `!!x. T`;
   > val it = `!! x. T` : term

SEEALSO  constants,   new_constant,   new_infix,   new_definition,   new_infixl_definition,   new_infixr_definition,   new_binder_definition