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sync: document keys of sync.Map will never be deleted #41000

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sync: document keys of sync.Map will never be deleted #41000

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1 change: 1 addition & 0 deletions src/sync/map.go
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@ import (
// contention compared to a Go map paired with a separate Mutex or RWMutex.
//
// The zero Map is empty and ready for use. A Map must not be copied after first use.
// Keys in the Map will never be deleted, thus they will never be garbage collected.
type Map struct {
mu Mutex

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