/**
* Return one of the collected element.
*
* @return Optional Any collected element or {@see Optional::absent()} if no element has been collected.
*/
public function get()
{
if (empty($this->values)) {
return Optional::absent();
}
return Optional::of($this->values[intval(rand(0, count($this->values) - 1))]);
}
/**
* Collects item resulting of the Stream Process and call the reduce method with previous reduced value and
* current item.
*
* @param type $key Key value in the initial array (<em>array index</em>)
* @param type $value Value after processing
*/
public function collect($key, $value)
{
if ($this->current->isEmpty()) {
$this->current = Optional::of($value);
} else {
$this->current = Optional::of($this->func !== null ? $this->func->apply($this->current->get(), $value) : call_user_func($this->callable, $this->current->get(), $value));
}
}
public function testOptionalEquals()
{
$opt = Optional::absent();
$this->assertTrue($opt->equals($opt));
$this->assertTrue($opt->equals(Optional::absent()));
$this->assertFalse($opt->equals(Optional::of([0, 1, 2])));
$this->assertFalse($opt->equals([0, 1, 2]));
$opt = Optional::of([0, 1, 2]);
$this->assertTrue($opt->equals($opt));
$this->assertTrue($opt->equals(Optional::of([0, 1, 2])));
$this->assertFalse($opt->equals(Optional::absent()));
$this->assertFalse($opt->equals(Optional::of([2, 3, 4])));
$this->assertFalse($opt->equals([0, 1, 2]));
}
/**
* Collects the min element at any time regarding the comparator method.
*
* @param type $key Key value in the initial array (<em>array index</em>)
* @param type $value Value after processing
*/
public function collect($key, $value)
{
if ($this->current->isEmpty()) {
$this->current = Optional::of($value);
} else {
if ($this->comparator !== null) {
if ($this->comparator->compare($value, $this->current->get()) < 0) {
$this->current = Optional::of($value);
}
} else {
if (call_user_func($this->callable, $value, $this->current->get()) < 0) {
$this->current = Optional::of($value);
}
}
}
}
/**
* Collects the first element of the stream processing.
*
* @param type $key Key value in the initial array (<em>array index</em>)
* @param type $value Value after processing
*/
public function collect($key, $value)
{
if ($this->optional->isEmpty()) {
$this->optional = Optional::of($value);
}
}
