mirror of
https://github.com/tailscale/tailscale.git
synced 2024-11-29 21:15:39 +00:00
71029cea2d
This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>
30 lines
679 B
Go
30 lines
679 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
|
|
// SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
// Package set contains set types.
|
|
package set
|
|
|
|
// HandleSet is a set of T.
|
|
//
|
|
// It is not safe for concurrent use.
|
|
type HandleSet[T any] map[Handle]T
|
|
|
|
// Handle is a opaque comparable value that's used as the map key
|
|
// in a HandleSet. The only way to get one is to call HandleSet.Add.
|
|
type Handle struct {
|
|
v *byte
|
|
}
|
|
|
|
// Add adds the element (map value) e to the set.
|
|
//
|
|
// It returns the handle (map key) with which e can be removed, using a map
|
|
// delete.
|
|
func (s *HandleSet[T]) Add(e T) Handle {
|
|
h := Handle{new(byte)}
|
|
if *s == nil {
|
|
*s = make(HandleSet[T])
|
|
}
|
|
(*s)[h] = e
|
|
return h
|
|
}
|