Returns the values mapped by the supplied function and then flattens
the values into a single traversable. Keys will be reindexed.
| public selectMany ( callable $function ) : pinq\ITraversable | ||
| $function | callable | The function returning the data to select |
| Результат | pinq\ITraversable | |
/**
* @dataProvider tenRandomStrings
*/
public function testThatSelectManyFlattensCorrectlyAndIgnoresKeys(\Pinq\ITraversable $values, array $data)
{
$characters = $values->selectMany(function ($i) {
return str_split($i);
});
$this->assertMatches($characters, array_values(self::flattenArrays(array_map('str_split', $data))));
}
/**
* @dataProvider someStrings
*/
public function testSelectManyQuery(\Pinq\ITraversable $traversable, array $data)
{
foreach ($traversable->selectMany(function ($i) {
return str_split($i);
})->getTrueIterator() as $value) {
}
$string = $traversable->selectMany(function ($i) {
return str_split($i);
})->select(function ($char) {
return $char;
})->implode('');
$trueString = '';
foreach ($data as $i) {
foreach (str_split($i) as $char) {
$trueString .= $char;
}
}
$this->assertEquals($trueString, $string);
}
public function visitSelectMany(Segments\SelectMany $query)
{
$this->traversable = $this->traversable->selectMany($this->resolvedParameters[$query->getProjectionFunction()->getCallableId()]);
}
