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Source files keep their SPDX-License-Identifier and Hanzo copyright line; the Gitea, Gogs and LFS Test Server copyrights they used to repeat now live once in NOTICE, alongside LICENSE. The header lint accepts any copyright line above the SPDX line, so it no longer demands an upstream one. Co-authored-by: Hanzo Dev <[email protected]>
72 lines
1.6 KiB
Go
72 lines
1.6 KiB
Go
// Copyright 2026 Hanzo AI, Inc. All rights reserved.
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// SPDX-License-Identifier: MIT
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package container
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import "maps"
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type Set[T comparable] map[T]struct{}
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// SetOf creates a set and adds the specified elements to it.
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func SetOf[T comparable](values ...T) Set[T] {
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s := make(Set[T], len(values))
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s.AddMultiple(values...)
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return s
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}
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// Add adds the specified element to a set.
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// Returns true if the element is added; false if the element is already present.
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func (s Set[T]) Add(value T) bool {
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if _, has := s[value]; !has {
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s[value] = struct{}{}
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return true
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}
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return false
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}
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// AddMultiple adds the specified elements to a set.
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func (s Set[T]) AddMultiple(values ...T) {
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for _, value := range values {
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s.Add(value)
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}
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}
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// Contains determines whether a set contains all these elements.
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// Returns true if the set contains all these elements; otherwise, false.
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func (s Set[T]) Contains(values ...T) bool {
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ret := true
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for _, value := range values {
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_, has := s[value]
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ret = ret && has
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}
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return ret
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}
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// Remove removes the specified element.
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// Returns true if the element is successfully found and removed; otherwise, false.
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func (s Set[T]) Remove(value T) bool {
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if _, has := s[value]; has {
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delete(s, value)
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return true
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}
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return false
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}
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// Values gets a list of all elements in the set.
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func (s Set[T]) Values() []T {
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keys := make([]T, 0, len(s))
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for k := range s {
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keys = append(keys, k)
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}
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return keys
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}
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// Union constructs a new set that is the union of the provided sets
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func (s Set[T]) Union(sets ...Set[T]) Set[T] {
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newSet := maps.Clone(s)
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for i := range sets {
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maps.Copy(newSet, sets[i])
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}
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return newSet
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}
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