141

add go 1.23 iterator support #52 @semihbkgr

140

add Clear() function to haxmap #47 @semihbkgr

131

handle edge case to prevent panic during map initialization #44 @semihbkgr

130

This release is all thanks to @semihbkgr 🙏

• Added GetAndDel function similar to golang concurrent map's LoadAndDelete #31
• JSON encoding support #29
• Critical bug fixed with Set operation after Delete #34
• No more unnecessary resizing #36
• Fix logic of fillrate computation #38

120

• Add atomic CompareAndSwap and Swap APIs #18
• Improve deletion performance via lazily deleting nodes #17
• Add GetOrCompute API which works similar to GetOrSet but the value is computed from a constructor which is called only once #16

110

Add GetOrSet() API same as golang's sync.Map.LoadOrStore #15

102

Fix deadlock when multiple goroutines are trying to delete the same linked-list node f4885e7

101

• Support go 1.18 and above @StandoffVenus #13
• Fix concurrent deletion issue #14
• Add bulk deletion feature map.Del(keyA, keyB, keyC...)

Stable

• Fix bug in delete operation #11
• Fix deadlock bug during Set() #7 #8
• Update ForEach() API to match golang's sync.Map.Range() #10

Performance improvement

Notes

• Improve hashing performance by switching to pure arithmetic and bitmasking for known key sizes

Benchmarks

Benchmarks were performed against golang sync.Map and the latest cornelk-hashmap

All results were computed from benchstat of 20 runs

1. Concurrent Reads Only

name                         time/op
HaxMapReadsOnly-8            7.13µs ± 5%
GoSyncMapReadsOnly-8         22.4µs ± 2%
CornelkMapReadsOnly-8        8.28µs ± 1%

2. Concurrent Reads with Writes

name                         time/op
HaxMapReadsWithWrites-8      8.44µs ± 5%
GoSyncMapReadsWithWrites-8   26.1µs ± 2%
CornelkMapReadsWithWrites-8  9.55µs ± 2%

name                         alloc/op
HaxMapReadsWithWrites-8      1.22kB ± 6%
GoSyncMapReadsWithWrites-8   6.06kB ± 6%
CornelkMapReadsWithWrites-8  1.56kB ± 5%

name                         allocs/op
HaxMapReadsWithWrites-8         152 ± 6%
GoSyncMapReadsWithWrites-8      562 ± 6%
CornelkMapReadsWithWrites-8     195 ± 5%