mirror of
https://github.com/golang/go
synced 2024-11-17 05:54:46 -07:00
46 lines
836 B
Go
46 lines
836 B
Go
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// run -gcflags=-G=3
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// Copyright 2021 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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type hello struct{}
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func main() {
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_ = Some(hello{})
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res := Applicative2(func(a int, b int) int {
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return 0
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})
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_ = res
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}
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type NoneType[T any] struct{}
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func (r NoneType[T]) Recover() any {
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return nil
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}
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type Func2[A1, A2, R any] func(a1 A1, a2 A2) R
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func Some[T any](v T) any {
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_ = Some2[T](v)
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return NoneType[T]{}.Recover()
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}
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//go:noinline
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func Some2[T any](v T) any {
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return v
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}
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type Nil struct{}
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type ApplicativeFunctor2[H, HT, A1, A2, R any] struct {
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h any
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}
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func Applicative2[A1, A2, R any](fn Func2[A1, A2, R]) ApplicativeFunctor2[Nil, Nil, A1, A2, R] {
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return ApplicativeFunctor2[Nil, Nil, A1, A2, R]{Some(Nil{})}
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}
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