flashultra / uuid Goto Github PK
View Code? Open in Web Editor NEWGenerates the RFC-4122 UUIDs , NanoId, FlakeId, Short-UUID
License: MIT License
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V4 generator is deterministic on Neko
I've run into bugs because on Neko, Uuid.v4() always returns the same sequence of ids in each run-through of a program.
To reproduce this problem:
haxelib install ihx
haxelib install uuid
haxelib run ihx -neko -lib uuid
>> [uuid.Uuid.v1(),uuid.Uuid.v4()]
Array<String> : [0f642390-1cd0-11b2-8cf0-19ff53c1a638,190b6fa6-6558-4f1a-b0e0-48466ef3f225]
>> [uuid.Uuid.v1(),uuid.Uuid.v4()]
Array<String> : [0f666d80-1cd0-11b2-8cf0-452fa3a84843,10182a8d-d1af-4304-ae27-cf42283ebaa7]
>> exit
haxelib run ihx -neko -lib uuid
>> [uuid.Uuid.v1(),uuid.Uuid.v4()]
Array<String> : [0f733ec0-1cd0-11b2-8cf0-19ff53c1a638,190b6fa6-6558-4f1a-b0e0-48466ef3f225]
>> [uuid.Uuid.v1(),uuid.Uuid.v4()]
Array<String> : [0f78bd00-1cd0-11b2-8cf0-452fa3a84843,10182a8d-d1af-4304-ae27-cf42283ebaa7]
You can see that the v1() results are different in between program sessions, but the v4() results are the same. I expected v4() to return a unique id 99.999999999999999999999999% of the time, and never to see a collision in my lifetime, even between different program sessions.
Incompatible with Haxe 4
Similarly to your hxprng library, this has become incompatible with haxelib for Haxe 4. I'm about to open a PR to fix it.
Error for swf targets: Accessing this field requires a system platform (php,neko,cpp,etc.)
uuid/2,4,0/src/uuid/Uuid.hx:36: characters 80-84 : Accessing this field requires a system platform (php,neko,cpp,etc.)
uuid/2,4,0/src/uuid/Uuid.hx:36: characters 80-84 : ... For function argument 'f'
refers to this line
static var rndSeed:Int64 = Int64.fromFloat(#if js js.lib.Date.now() #else Sys.time()*1000 #end);
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