/**
* This method tests the "lt" method.
*
* @dataProvider data_lt
*/
public function test_lt(array $provided, array $expected)
{
$p0 = IInt32\Module::lt(IInt32\Type::box($provided[0]), IInt32\Type::box($provided[1]));
$e0 = $expected[0];
$this->assertInstanceOf('\\Saber\\Data\\IBool\\Type', $p0);
$this->assertSame($e0, $p0->unbox());
}
/**
* This method returns each item in this string until the predicate fails.
*
* @access public
* @static
* @param IString\Type $xs the left operand
* @param callable $predicate the predicate function to be used
* @return IString\Type the string
*/
public static function takeWhile(IString\Type $xs, callable $predicate) : IString\Type
{
$buffer = '';
$length = $xs->length();
for ($i = IInt32\Type::zero(); IInt32\Module::lt($i, $length)->unbox(); $i = IInt32\Module::increment($i)) {
$x = $xs->item($i);
if (!$predicate($x, $i)->unbox()) {
break;
}
$buffer .= $x->unbox();
}
return IString\Type::box($buffer);
}
/**
* This method compares the operands for order.
*
* @access public
* @static
* @param ITuple\Type $xs the left operand
* @param ITuple\Type $ys the right operand
* @return ITrit\Type the order as to whether the left
* operand is less than, equals to,
* or greater than the right operand
*/
public static function compare(ITuple\Type $xs, ITuple\Type $ys) : ITrit\Type
{
$xsl = $xs->length();
$ysl = $ys->length();
$length = IInt32\Module::min($xsl, $ysl);
for ($i = IInt32\Type::zero(); IInt32\Module::lt($i, $length)->unbox(); $i = IInt32\Module::increment($i)) {
$r = $xs->item($i)->compare($ys->item($i));
if ($r->unbox() != 0) {
return $r;
}
}
return ITrit\Type::box($xsl->unbox() <=> $ysl->unbox());
}