diff options
Diffstat (limited to 'test/typeparam/smallest.go')
-rw-r--r-- | test/typeparam/smallest.go | 42 |
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)) + } +} |