1 files changed, 15 insertions, 0 deletions
diff --git a/test/typeparam/mapimp.dir/a.go b/test/typeparam/mapimp.dir/a.go
new file mode 100644
index 0000000000..cbfa80ac6b
--- /dev/null
+++ b/test/typeparam/mapimp.dir/a.go
@@ -0,0 +1,15 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package a
+
+// Map calls the function f on every element of the slice s,
+// returning a new slice of the results.
+func Mapper[F, T any](s []F, f func(F) T) []T {
+	r := make([]T, len(s))
+	for i, v := range s {
+		r[i] = f(v)
+	}
+	return r
+}