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55 lines
1.8 KiB
Go
55 lines
1.8 KiB
Go
// 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 constraints defines a set of useful constraints to be used
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// with type parameters.
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package constraints
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import "cmp"
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// Signed is a constraint that permits any signed integer type.
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// If future releases of Go add new predeclared signed integer types,
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// this constraint will be modified to include them.
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type Signed interface {
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~int | ~int8 | ~int16 | ~int32 | ~int64
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}
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// Unsigned is a constraint that permits any unsigned integer type.
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// If future releases of Go add new predeclared unsigned integer types,
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// this constraint will be modified to include them.
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type Unsigned interface {
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~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr
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}
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// Integer is a constraint that permits any integer type.
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// If future releases of Go add new predeclared integer types,
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// this constraint will be modified to include them.
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type Integer interface {
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Signed | Unsigned
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}
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// Float is a constraint that permits any floating-point type.
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// If future releases of Go add new predeclared floating-point types,
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// this constraint will be modified to include them.
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type Float interface {
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~float32 | ~float64
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}
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// Complex is a constraint that permits any complex numeric type.
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// If future releases of Go add new predeclared complex numeric types,
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// this constraint will be modified to include them.
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type Complex interface {
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~complex64 | ~complex128
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}
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// Ordered is a constraint that permits any ordered type: any type
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// that supports the operators < <= >= >.
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// If future releases of Go add new ordered types,
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// this constraint will be modified to include them.
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//
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// This type is redundant since Go 1.21 introduced [cmp.Ordered].
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//
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//go:fix inline
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type Ordered = cmp.Ordered
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