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-rw-r--r--test/typeparam/smallest.go42
1 files changed, 42 insertions, 0 deletions
diff --git a/test/typeparam/smallest.go b/test/typeparam/smallest.go
new file mode 100644
index 0000000..0ebd10e
--- /dev/null
+++ b/test/typeparam/smallest.go
@@ -0,0 +1,42 @@
+// run
+
+// 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 (
+ "fmt"
+)
+
+type Ordered interface {
+ ~int | ~int8 | ~int16 | ~int32 | ~int64 |
+ ~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr |
+ ~float32 | ~float64 |
+ ~string
+}
+
+func Smallest[T Ordered](s []T) T {
+ r := s[0] // panics if slice is empty
+ for _, v := range s[1:] {
+ if v < r {
+ r = v
+ }
+ }
+ return r
+}
+
+func main() {
+ vec1 := []float64{5.3, 1.2, 32.8}
+ vec2 := []string{"abc", "def", "aaa"}
+
+ want1 := 1.2
+ if got := Smallest(vec1); got != want1 {
+ panic(fmt.Sprintf("got %d, want %d", got, want1))
+ }
+ want2 := "aaa"
+ if got := Smallest(vec2); got != want2 {
+ panic(fmt.Sprintf("got %d, want %d", got, want2))
+ }
+}