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52 lines
963 B
Go
52 lines
963 B
Go
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// compile
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// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import "fmt"
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type IntLike interface {
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~int | ~int64 | ~int32 | ~int16 | ~int8
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}
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func Reduce[T any, U any, Uslice ~[]U](function func(T, U) T, sequence Uslice, initial T) T {
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result := initial
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for _, x := range sequence {
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result = function(result, x)
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}
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return result
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}
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func min[T IntLike](x, y T) T {
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if x < y {
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return x
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}
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return y
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}
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// Min returns the minimum element of `nums`.
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func Min[T IntLike, NumSlice ~[]T](nums NumSlice) T {
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if len(nums) == 0 {
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return T(0)
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}
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return Reduce(min[T], nums, nums[0])
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}
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// VarMin is the variadic version of Min.
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func VarMin[T IntLike](nums ...T) T {
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return Min(nums)
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}
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type myInt int
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func main() {
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fmt.Println(VarMin(myInt(1), myInt(2)))
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seq := []myInt{1, 2}
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fmt.Println(Min(seq))
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fmt.Println(VarMin(seq...))
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}
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