PHP code example of dseguy / data-combinator

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

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

    

dseguy / data-combinator example snippets

use Datacombinator\Matrix;

$m = new Datacombinator\Matrix();
$m->addSet('x', [1,2,3]);
$m->addSet('y', [4,5,6]);

foreach($m as $value) {
    print_r($value);
}

$m = new Datacombinator\Matrix();
$m->addConstant('x', 2);
$m->addConstant('y', 3);

Array
(
    [x] => 2
    [y] => 3
)

$m = new Datacombinator\Matrix();
$m->addSet('x', [1, [2], 3]);
$m->addConstant('y', 4);

foreach($m->generate() as $array) {
    print_r($array);
}

$m = new Datacombinator\Matrix();
$m->addSet('x', [1, [2], 3]);
$m->addConstant('y', 4);

(
    [x] => 1
    [y] => 4
)
Array
(
    [x] => Array (
            2
            )
    [y] => 4
)
Array
(
    [x] => 3
    [y] => 4
)

$m = new Datacombinator\Matrix();

// No argument for this closure, as we don't need it
$m->addLambda('x', function () { return rand(0, 10);});

// This closure takes the previously created values as input
// the range of random values is now twice as large
$m->addLambda('y', function ($value) { return rand(0, 2 * $value['x']);});

// the closure are called each time once, so this matrix as one element, with 2 closure calls
(
    [x] => 4
    [y] => 7
)

$m = new Matrix();

// No argument for this closure, as we don't need it
$m->addLambda('x', function () { return $this->uniqueId;});
$m->addSet('y', [5,6]);

(
    [x] => 1
    [y] => 5
)
(
    [x] => 2
    [y] => 6
)

$m = new Datacombinator\Matrix();

// No argument for this closure, as we don't need it
$a = $m->addConstant('a', 'A');
$m->addAlias('b', $a);
$m->addLambda('x', function ($r) { return $r['a'].($r['b'] ?? 'No B').($r['c'] ?? 'No C')});
$m->addConstant('c', 'C');

print_r($m->toArray());

Array
(
    [0] => Array
        (
            [a] => A
            // No B, because it is an alias
            // No C, because it is defined later. It may be moved before 'x' to get access to it
            [x] => ANo BNo C
            [c] => C
            [b] => A
        )

)

$m = new Datacombinator\Matrix();

// Create all permutation in the list : total 6 of them
$m->addPermute('x', [1, 2, 3]);


(
    [x] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
        )

)
Array
(
    [x] => Array
        (
            [0] => 1
            [1] => 3
            [2] => 2
        )

)
Array
(
    [x] => Array
        (
            [0] => 2
            [1] => 1
            [2] => 3
        )

)
Array
(
    [x] => Array
        (
            [0] => 2
            [1] => 3
            [2] => 1
        )

)
Array
(
    [x] => Array
        (
            [0] => 3
            [1] => 1
            [2] => 2
        )

)
Array
(
    [x] => Array
        (
            [0] => 3
            [1] => 2
            [2] => 1
        )

)

$m = new Datacombinator\Matrix();

// Create all combinaisons from the list : total 8 of them
$m->addCombine('x', [1, 2, 3]);


(
    [x] => Array
        (
        )

)
Array
(
    [x] => Array
        (
            [0] => 1
        )

)
Array
(
    [x] => Array
        (
            [0] => 2
        )

)
Array
(
    [x] => Array
        (
            [0] => 1
            [1] => 2
        )

)
Array
(
    [x] => Array
        (
            [0] => 3
        )

)
Array
(
    [x] => Array
        (
            [0] => 1
            [1] => 3
        )

)
Array
(
    [x] => Array
        (
            [0] => 2
            [1] => 3
        )

)
Array
(
    [x] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
        )

)

$m = new Datacombinator\Matrix();

// Create all combinaisons from the list : total 8 of them
$m->addClone('x', new \stdClass);
$m->addSet('i', [1, 2]);

$generated = $m->toArray();

$m = new Datacombinator\Matrix();
$m->addSet('i', [2, 3]);
$m->setClass(stdClass::class);

$n = new Datacombinator\Matrix();
$n->addSet('j', [5,7]);
$n->addMatrix('x', $m);
Array
(
    [j] => 5
    [x] => stdClass Object
        (
            [i] => 2
        )

)
Array
(
    [j] => 5
    [x] => stdClass Object
        (
            [i] => 3
        )

)
Array
(
    [j] => 7
    [x] => stdClass Object
        (
            [i] => 2
        )

)
Array
(
    [j] => 7
    [x] => stdClass Object
        (
            [i] => 3
        )

)

$m = new Matrix();
$i = $m->addSet('i', [2, 3]);
$m->addAlias('j', $i);

print_r($m->toArray());

Array
(
    [0] => Array
        (
            [i] => 2
            [j] => 2
        )

    [1] => Array
        (
            [i] => 3
            [j] => 3
        )

)

$m = new Matrix();
$i = $m->addSequence('i', 0, 10);

print_r($m->toArray());

Array
(
    [0] => Array
        (
            [i] => 0
        )
    [1] => Array
        (
            [i] => 1
        )
    [2] => Array
        (
            [i] => 2
        )
// ....
    [9] => Array
        (
            [i] => 9
        )
)

class Point {
	int $x, $y;
}

$m = new Datacombinator\Matrix();
$m->setClass(Point::class);
$m->addSet('x', [1,2]);
$m->addSet('y', [4,5]);

Point Object
(
    [x] => 1
    [y] => 4
)

class Point {
	int $x, $y;
}

$m = new Datacombinator\Matrix();
$m->setClass(\stdClass::class);
$m->addConstant('x', 1);
$m->addConstant('y', 2);

stdClass Object
(
    [x] => 1
    [y] => 2
)

$m = new Datacombinator\Matrix();
$m->addSet('x', [1,2]);
$m->addSet('y', [4,5]);
print $m->count()." elements";


// 4 elements

$m = new Datacombinator\Matrix();
$m->addSet('x', [1,2]);
$m->addSet('y', [4,5]);
print_r($m->toArray());

Array
(
    [0] => Array
        (
            [x] => 1
            [y] => 4
        )

    [1] => Array
        (
            [x] => 1
            [y] => 5
        )

    [2] => Array
        (
            [x] => 2
            [y] => 4
        )

    [3] => Array
        (
            [x] => 2
            [y] => 5
        )

)