modules/utils.js
/**
 * Fast UUID generator, RFC4122 version 4 compliant.
 * http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136
 **/
Fast UUID generator, RFC4122 version 4 compliant.
Fast UUID generator RFC4122 version 4 compliant .
function generateUUID() {
    var lut = [];
    for (var i = 0; i < 256; i++) { lut[i] = (i < 16 ? '0' : '') + (i).toString(16); }
    function generate() {
        var d0 = Math.random() * 0xffffffff | 0;
        var d1 = Math.random() * 0xffffffff | 0;
        var d2 = Math.random() * 0xffffffff | 0;
        var d3 = Math.random() * 0xffffffff | 0;
        return lut[d0 & 0xff] + lut[d0 >> 8 & 0xff] + lut[d0 >> 16 & 0xff] + lut[d0 >> 24 & 0xff] + '-' +
            lut[d1 & 0xff] + lut[d1 >> 8 & 0xff] + '-' + lut[d1 >> 16 & 0x0f | 0x40] + lut[d1 >> 24 & 0xff] + '-' +
            lut[d2 & 0x3f | 0x80] + lut[d2 >> 8 & 0xff] + '-' + lut[d2 >> 16 & 0xff] + lut[d2 >> 24 & 0xff] +
            lut[d3 & 0xff] + lut[d3 >> 8 & 0xff] + lut[d3 >> 16 & 0xff] + lut[d3 >> 24 & 0xff];
    }
    return generate();
}
function generateUUID ( ) { var lut = [ ] ; for ( var i = 0 ; i < 256 ; i ++ ) { lut [ i ] = ( i < 16 ? '0' : '' ) + ( i ) . toString ( 16 ) ; } function generate ( ) { var d0 = Math . random ( ) * 0xffffffff | 0 ; var d1 = Math . random ( ) * 0xffffffff | 0 ; var d2 = Math . random ( ) * 0xffffffff | 0 ; var d3 = Math . random ( ) * 0xffffffff | 0 ; return lut [ d0 & 0xff ] + lut [ d0 >> 8 & 0xff ] + lut [ d0 >> 16 & 0xff ] + lut [ d0 >> 24 & 0xff ] + '-' + lut [ d1 & 0xff ] + lut [ d1 >> 8 & 0xff ] + '-' + lut [ d1 >> 16 & 0x0f | 0x40 ] + lut [ d1 >> 24 & 0xff ] + '-' + lut [ d2 & 0x3f | 0x80 ] + lut [ d2 >> 8 & 0xff ] + '-' + lut [ d2 >> 16 & 0xff ] + lut [ d2 >> 24 & 0xff ] + lut [ d3 & 0xff ] + lut [ d3 >> 8 & 0xff ] + lut [ d3 >> 16 & 0xff ] + lut [ d3 >> 24 & 0xff ] ; } return generate ( ) ; }
Fast UUID generator, RFC4122 version 4 compliant.
Fast UUID generator RFC4122 version 4 compliant .