func go/types.underIs

5 uses

	go/types (current package)
		builtins.go#L238: 		if !underIs(x.typ, func(u Type) bool {
		builtins.go#L388: 		if !underIs(map_, func(u Type) bool {
		expr.go#L149: func underIs(typ Type, f func(Type) bool) bool {
		expr.go#L1595: 			if !underIs(x.typ, func(u Type) bool {
		signature.go#L238: 						underIs(T, func(u Type) bool {