Clone benchmark

benchmark.js

class Query {
    constructor() {
        this.select = '';
        this.from = '';
        this.where = '';
    }
}

for (let i = 0; i < 1000000; i++) {
    const q = new Query();
    const q1 = {...q, select: '1'};
    const q2 = {...q1, from: 'table'};
    const q3 = {...q2, where: 'a = b'};
}

/*
for (let i = 0; i < 1000000; i++) {
    const q = new Query();
    q.select = '1';
    q.from = 'table';
    q.where = 'a = b';
}
*/

benchmark.ml

type query = {
    select: string;
    from: string;
    where: string;
}

type query_mut = {
    mutable select: string;
    mutable from: string;
    mutable where: string;
}

let _ =
    for i = 0 to 1000000 do
        let q : query = {select = ""; from = ""; where = ""} in
        let q1 = {q with select = "1"} in
        let q2 = {q1 with from = "table"} in
        let q3 = {q2 with where = "a = b"} in
        ()
    done;
    (*
    for i = 0 to 1000000 do
        let q : query_mut = {select = ""; from = ""; where = ""} in
        q.select <- "1";
        q.from <- "table";
        q.where <- "a = b";
        ()
    done
    *)

benchmark.php

<?php

class QueryBuilder
{
    public $select;
    public $from;
    public $where;

    public function withSelect($sel)
    {
        $that = clone $this;
        $that->select = $sel;
        return $that;
    }

    public function withFrom($from)
    {
        $that = clone $this;
        $that->from = $from;
        return $that;
    }

    public function withWhere($where)
    {
        $that = clone $this;
        $that->where = $where;
        return $that;
    }
}

for ($i = 0; $i < 1000000; $i++) {
    $q = (new QueryBuilder())->withSelect('1')->withFrom('table')->withWhere('a = b');
    unset($q);
}

/*
for ($i = 0; $i < 1000000; $i++) {
    $q = new QueryBuilder();
    $q->select = '1';
    $q->from = 'table';
    $q->where = 'a = b';
    unset($q);
}
 */