Tix

Tix is a unique id generator.

1. Gives you unique ids
2. Keeps track of whether a given id has been taken
3. You can release a previously taken id
4. Automatically expands backing store
5. Uses bitmasks on an integer array for speed and awesomeness

var Tix = require('tix');
 
var ids = new Tix();
 
var id = ids.take(); // 0
 
var anotherId = ids.take(); // 1
 
ids.has(1); // true
ids.has(2); // false
 
var id = ids.take(); // 2
ids.has(2); // false
 
ids.release(1);
ids.has(1); // false
 
var id = ids.take() // 1

API

take() -> integer

returns the smallest positive integer not currently taken.

has() -> boolean

returns true or false depending on whether or not a given id currently taken.

release(id: integer) -> void

releases a taken id. Does nothing if the passed id hasn't been taken.