PHP code example of zonuexe / functools

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

zonuexe / functools example snippets

use Teto\Functools as f;

$comma = f::partial("implode", [", "]);
$comma(range(1, 10));
// "1, 2, 3, 4, 5, 6, 7, 8, 9, 10"

$join_10 = f::partial("implode", [1 => range(1, 10)], 0);
$join_10("@");
// "1@2@3@4@5@6@7@8@9@10"
$join_10("\\");
=> "1\\2\\3\\4\\5\\6\\7\\8\\9\\10"

$sleep3 = f::partial("sleep", [3]);
$sleep3();
$sleep3("foo"); // Error!

$sleep3 = f::partial("sleep", [3], -1);
$sleep3("foo"); // OK!

$add = f::op("+");
$add(2, 3); // (2 + 3) === 5

$add_1 = f::op("+", [1]);
$add_1(4);  // (1 + 4) === 5

$half = f::op("/", [1 => 2], 0);
$half(10);  // (10 / 2) === 5

$teto  = f::tuple("Teto Kasane",  31, "2008-04-01", "Baguette");
$ritsu = f::tuple("Ritsu Namine", 6,  "2009-10-02", "Napa cabbage");

// index access
$teto[0]; // "Teto Kasane"
$teto[1]; // 31
$teto[2]; // "2008-04-01"
$teto[3]; // "Baguette"

// property access

$tetop  = f::tuple("name", "Teto Kasane",  "age", 31, "birthday", "2008-04-01", "item", "Baguette");
$ritsup = f::tuple("name", "Ritsu Namine", "age",  6, "birthday", "2009-10-02", "item", "Napa cabbage");
$tetop->pget("name");     // "Teto Kasane"
$tetop->pget("age");      // 31
$tetop->pget("birthday"); // "2008-04-01"
$tetop->pget("item");     // "Baguette"

$fib = f::fix(function ($fib) {
    return function ($x) use ($fib) {
        return ($x < 2) ? 1 : $fib($x - 1) + $fib($x -2);
    };
});

$fib(6); // 13

// simple fibonacci function. But, very very slow.
$fib1 = function ($n) use (&$fib1) {
    return ($n < 2) ? $n : $fib1($n - 1) + $fib1($n - 2);
};

// simple fibonacci function too. very fast!
$fib2 = f::memoize(function ($n) use (&$fib2) {
    return ($n < 2) ? $n : $fib2($n - 1) + $fib2($n - 2);
}, [0, 1]);