Run results for: partition (ramda vs custom impl)1

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36

Browser: Chrome 91

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
ramda	9737.5 Ops/sec
custom impl (reduce)	56146.2 Ops/sec
custom impl (for)	64492.1 Ops/sec

HTML Preparation code:

<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>

Script Preparation code:

function is(n,r){return 1===arguments.length?function(r){return is(n,r)}:null!=r&&r.constructor===n||r instanceof n}

function partitionR(n,r){if(1===arguments.length)return function(r){return partition(n,r)};var t=is(Array,r);t||Object.keys(r);return t?r.reduce(function(r,t){return r[n(t)?0:1].push(t),r},[[],[]]):Object.keys(r).reduce(function(t,e){var u=r[e];return t[n(u)?0:1][e]=u,t},[{},{}])}

function partition(r,t){if(1===arguments.length)return function(t){return partition(r,t)};if(is(Array,t)){for(var n=[[],[]],e=0,i=t.length;e<i;e++){var a=t[e];n[r(a)?0:1].push(a)}return n}n=[{},{}];var u=Object.keys(t);for(e=0,i=u.length;e<i;e++){var f=u[e];a=t[f];n[r(a)?0:1][f]=a}return n}

var data = [...Array(3000)].map((v, i) => i)
var mod = x => x % 3 === 0

Tests:

ramda
R.partition(mod, data)
custom impl (reduce)
partitionR(mod, data)
custom impl (for)
partition(mod, data)

Run results for: partition (ramda vs custom impl)1

ramda

custom impl (reduce)

custom impl (for)