50 lines
1.7 KiB
Go
50 lines
1.7 KiB
Go
// Copyright 2021 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 constraints defines a set of useful constraints to be used
|
|
// with type parameters.
|
|
package constraints
|
|
|
|
// Signed is a constraint that permits any signed integer type.
|
|
// If future releases of Go add new predeclared signed integer types,
|
|
// this constraint will be modified to include them.
|
|
type Signed interface {
|
|
~int | ~int8 | ~int16 | ~int32 | ~int64
|
|
}
|
|
|
|
// Unsigned is a constraint that permits any unsigned integer type.
|
|
// If future releases of Go add new predeclared unsigned integer types,
|
|
// this constraint will be modified to include them.
|
|
type Unsigned interface {
|
|
~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr
|
|
}
|
|
|
|
// Integer is a constraint that permits any integer type.
|
|
// If future releases of Go add new predeclared integer types,
|
|
// this constraint will be modified to include them.
|
|
type Integer interface {
|
|
Signed | Unsigned
|
|
}
|
|
|
|
// Float is a constraint that permits any floating-point type.
|
|
// If future releases of Go add new predeclared floating-point types,
|
|
// this constraint will be modified to include them.
|
|
type Float interface {
|
|
~float32 | ~float64
|
|
}
|
|
|
|
// Complex is a constraint that permits any complex numeric type.
|
|
// If future releases of Go add new predeclared complex numeric types,
|
|
// this constraint will be modified to include them.
|
|
type Complex interface {
|
|
~complex64 | ~complex128
|
|
}
|
|
|
|
// Ordered is a constraint that permits any ordered type: any type
|
|
// that supports the operators < <= >= >.
|
|
// If future releases of Go add new ordered types,
|
|
// this constraint will be modified to include them.
|
|
type Ordered interface {
|
|
Integer | Float | ~string
|
|
}
|