What is the Ds\Set::clear method in php?
The clear method of the Set data structure removes all the Set values.
A Set is a collection of unique values. In Ds\Set, we can store any value, including objects. The insertion order of the element is preserved.
Installing DS
By default, Data Structures (DS) is not installed in PHP. We can install it by following these instructions on php.net.
Syntax
This method will make the Set empty.
public Ds\Set::clear(): void
Code
<?php$set = new \Ds\Set();$set->add(1,2,3);print_r($set); //Ds\Set Object ( [0] => 1 [1] => 2 [2] => 3 )$set->clear();print_r($set); //Ds\Set Object ( )?>
Explanation
In the code above:
-
We have created an object of type
Setdata structure and added elements using theaddmethod. -
Then used the
clearmethod of theSet. This will remove all the elements of theSet.