Invoke the implementation function by passing args and receive the return value

Property definitions

nitc $ ForeignCodeEntry :: call
	# Invoke the implementation function by passing `args` and receive the return value
	fun call(argc: Int, args, ret: CallArg): Bool `{
		return ((nit_foreign_lib_entry)self)(argc, args, ret);
	`}
src/interpreter/dynamic_loading_ffi/dynamic_loading_ffi.nit:243,2--246,3