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// run
// Copyright 2022 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
type TaskInput interface {
deps() []*taskDefinition
}
type Value[T any] interface {
metaValue
}
type metaValue interface {
TaskInput
}
type taskDefinition struct {
}
type taskResult struct {
task *taskDefinition
}
func (tr *taskResult) deps() []*taskDefinition {
return nil
}
func use[T any](v Value[T]) {
_, ok := v.(*taskResult)
if !ok {
panic("output must be *taskResult")
}
}
func main() {
tr := &taskResult{&taskDefinition{}}
use[string](Value[string](tr))
}