public function testMapCollector()
{
$array = ['a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5, 'f' => 6];
$stream = new Stream($array);
$stream->map(new SquareFunction());
$res = $stream->collect(new MapCollector());
$this->assertEquals(['a' => 1, 'b' => 4, 'c' => 9, 'd' => 16, 'e' => 25, 'f' => 36], $res);
}
<?php
require_once '../../src/autoload.php';
use phpstream\Stream;
$stream = new Stream(['0', 'aa', '1', 'bb', '2', 'cc', '3', 'dd', '4']);
$res = $stream->map(function ($value) {
return intval($value);
})->filter(function ($value) {
return $value > 0;
})->filter(function ($value) {
return $value % 2 == 0;
})->map(function ($value) {
return $value + 1;
})->reduceWithDefault(function ($acc, $v) {
return $acc + $v;
}, 0);
// Returns 8 !
var_dump($res);
