Difference (relative complement) (A ∖ B) or (A - B)
Produces a new set with elements that are not in the other sets.
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public difference ( variadic |
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| $Bs | variadic |
One or more sets |
| return | ||
public function testDifferenceWithObjects()
{
$vector1 = new Vector([1, 2, 3]);
$vector2 = new Vector([1, 2, 3]);
$A = new Set([1, 2, $vector1]);
$B = new Set([2, 3, $vector2]);
$A∖B = $A->difference($B);
$expected = new Set([1, $vector1]);
$this->assertEquals($expected, $A∖B);
$this->assertEquals($expected->asArray(), $A∖B->asArray());
$A = new Set([1, 2, $vector1]);
$B = new Set([2, 3, $vector2, $vector1]);
$A∖B = $A->difference($B);
$expected = new Set([1]);
$this->assertEquals($expected, $A∖B);
$this->assertEquals($expected->asArray(), $A∖B->asArray());
}
