v3.3.1

• Add NewMapOfWithHasher function #137

Adds NewMapOfWithHasher function to support custom hash functions in MapOf:

m := NewMapOfWithHasher[int, int](func(i int, _ uint64) uint64 {
	// Murmur3 finalizer. No DDOS protection as it does not support seed.
	h := uint64(i)
	h = (h ^ (h >> 33)) * 0xff51afd7ed558ccd
	h = (h ^ (h >> 33)) * 0xc4ceb9fe1a85ec53
	return h ^ (h >> 33)
})

Some custom hash functions may be faster than the built-in function if the lack of DDOS protection is fine.

Murmur3 finalizer:

BenchmarkMapOfInt_Murmur3Finalizer_WarmUp/reads=100%-8         	525864650	         2.240 ns/op	 446360938 ops/s	       0 B/op	       0 allocs/op
BenchmarkMapOfInt_Murmur3Finalizer_WarmUp/reads=99%-8          	383333918	         3.127 ns/op	 319827294 ops/s	       0 B/op	       0 allocs/op
BenchmarkMapOfInt_Murmur3Finalizer_WarmUp/reads=90%-8          	267635385	         4.535 ns/op	 220506863 ops/s	       0 B/op	       0 allocs/op
BenchmarkMapOfInt_Murmur3Finalizer_WarmUp/reads=75%-8          	181292007	         6.448 ns/op	 155092697 ops/s	       2 B/op	       0 allocs/op

Built-in hash function:

BenchmarkMapOfInt_WarmUp/reads=100%-8         	431097415	         2.858 ns/op	 349837551 ops/s	       0 B/op	       0 allocs/op
BenchmarkMapOfInt_WarmUp/reads=99%-8          	307244330	         3.951 ns/op	 253072903 ops/s	       0 B/op	       0 allocs/op
BenchmarkMapOfInt_WarmUp/reads=90%-8          	226392990	         5.306 ns/op	 188477583 ops/s	       0 B/op	       0 allocs/op
BenchmarkMapOfInt_WarmUp/reads=75%-8          	159236962	         7.513 ns/op	 133108546 ops/s	       2 B/op	       0 allocs/op