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// 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.
// Test interpretation on zero values with type params.
package zeros
func assert(cond bool, msg string) {
if !cond {
panic(msg)
}
}
func tp0[T int | string | float64]() T { return T(0) }
func tpFalse[T ~bool]() T { return T(false) }
func tpEmptyString[T string | []byte]() T { return T("") }
func tpNil[T *int | []byte]() T { return T(nil) }
func main() {
// zero values
var zi int
var zf float64
var zs string
assert(zi == int(0), "zero value of int is int(0)")
assert(zf == float64(0), "zero value of float64 is float64(0)")
assert(zs != string(0), "zero value of string is not string(0)")
assert(zi == tp0[int](), "zero value of int is int(0)")
assert(zf == tp0[float64](), "zero value of float64 is float64(0)")
assert(zs != tp0[string](), "zero value of string is not string(0)")
assert(zf == -0.0, "constant -0.0 is converted to 0.0")
assert(!tpFalse[bool](), "zero value of bool is false")
assert(tpEmptyString[string]() == zs, `zero value of string is string("")`)
assert(len(tpEmptyString[[]byte]()) == 0, `[]byte("") is empty`)
assert(tpNil[*int]() == nil, "nil is nil")
assert(tpNil[[]byte]() == nil, "nil is nil")
}
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