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31 lines
521 B
Go
31 lines
521 B
Go
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package backend
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// IDSet is a set of IDs.
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type IDSet map[ID]struct{}
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// NewIDSet returns a new IDSet, populated with ids.
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func NewIDSet(ids ...ID) IDSet {
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m := make(IDSet)
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for _, id := range ids {
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m[id] = struct{}{}
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}
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return m
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}
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// Has returns true iff id is contained in the set.
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func (s IDSet) Has(id ID) bool {
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_, ok := s[id]
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return ok
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}
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// Insert adds id to the set.
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func (s IDSet) Insert(id ID) {
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s[id] = struct{}{}
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}
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// Delete removes id from the set.
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func (s IDSet) Delete(id ID) {
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delete(s, id)
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}
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