Run results for: unique list

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0

Browser: Firefox 106

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Set	129303.1 Ops/sec
fast	253363.4 Ops/sec

Tests:

Set
const routes = [ ['PHX', 'LAX'], ['PHX', 'JFK'], ['JFK', 'OKC'], ['JFK', 'HEL'], ['JFK', 'LOS'], ['MEX', 'LAX'], ['MEX', 'BKK'], ['MEX', 'LIM'], ['MEX', 'EZE'], ['LIM', 'BKK'], ]; const uniq1 = [...new Set(routes.flat())];
fast
function uniq_fast(a) { var seen = {}; var out = []; var len = a.length; var j = 0; for(var i = 0; i < len; i++) { var item = a[i]; if(seen[item] !== 1) { seen[item] = 1; out[j++] = item; } } return out; }; const routes = [ ['PHX', 'LAX'], ['PHX', 'JFK'], ['JFK', 'OKC'], ['JFK', 'HEL'], ['JFK', 'LOS'], ['MEX', 'LAX'], ['MEX', 'BKK'], ['MEX', 'LIM'], ['MEX', 'EZE'], ['LIM', 'BKK'], ]; const uniq2 = uniq_fast(routes.flat());