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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
commit43a123c1ae6613b3efeed291fa552ecd909d3acf (patch)
treefd92518b7024bc74031f78a1cf9e454b65e73665 /test/typeparam/mapimp.dir
parentInitial commit. (diff)
downloadgolang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.tar.xz
golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.zip
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/typeparam/mapimp.dir')
-rw-r--r--test/typeparam/mapimp.dir/a.go15
-rw-r--r--test/typeparam/mapimp.dir/main.go28
2 files changed, 43 insertions, 0 deletions
diff --git a/test/typeparam/mapimp.dir/a.go b/test/typeparam/mapimp.dir/a.go
new file mode 100644
index 0000000..cbfa80a
--- /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
+}
diff --git a/test/typeparam/mapimp.dir/main.go b/test/typeparam/mapimp.dir/main.go
new file mode 100644
index 0000000..8a56ce2
--- /dev/null
+++ b/test/typeparam/mapimp.dir/main.go
@@ -0,0 +1,28 @@
+// 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 main
+
+import (
+ "./a"
+ "fmt"
+ "reflect"
+ "strconv"
+)
+
+func main() {
+ got := a.Mapper([]int{1, 2, 3}, strconv.Itoa)
+ want := []string{"1", "2", "3"}
+ if !reflect.DeepEqual(got, want) {
+ panic(fmt.Sprintf("got %s, want %s", got, want))
+ }
+
+ fgot := a.Mapper([]float64{2.5, 2.3, 3.5}, func(f float64) string {
+ return strconv.FormatFloat(f, 'f', -1, 64)
+ })
+ fwant := []string{"2.5", "2.3", "3.5"}
+ if !reflect.DeepEqual(fgot, fwant) {
+ panic(fmt.Sprintf("got %s, want %s", fgot, fwant))
+ }
+}