function _getExamples()
{
$file = new SplFileObject(__DIR__ . '/examples.php');
$examples = [];
$current = '';
foreach ($file as $line) {
if (preg_match('~^(\\w+):$~', $line, $matches)) {
$examples[$matches[1]] = '';
$current =& $examples[$matches[1]];
continue;
}
$current .= $line;
}
return _::map($examples, function ($ex) {
return trim($ex);
});
}
function _map($list, $iterator, $context = NULL)
{
return Underscore::map($list, $iterator, $context);
}
/**
* @tags collections
*/
public function testMap()
{
// it should provide the value, key and list to the iterator (in that order)
$test = $this;
_::map(['a' => 1, 'b' => 2, 'c' => 3], function ($v, $k, $l) use($test) {
$test->integer($v);
$test->string($k);
$test->array($l);
});
// it should work with array, objects and iterators and return an array in every case
$this->typeTolerant([1, 2, 3], [2, 4, 6], function ($in, $out) {
$this->array(_::map($in, function ($v) {
return $v *= 2;
}))->isEqualTo($out);
}, [0, -1]);
// it should be possible to specify a context for iterator function
$this->variable(_::map([1, 2, 3], function ($v) {
return $v * $this->mult;
}, (object) ['mult' => 2]))->isEqualTo([2, 4, 6]);
}