Trusted answers to developer questions
Trusted Answers to Developer Questions

Related Tags

php
communitycreator

What is the Ds\Set::last method in PHP?

Programming Bytes

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

The last method of the Set data structure can get the last element in a Set.

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

In PHP, by default the Data Structures (DS) are not installed. We can install them by following the instructions on php.net.

Syntax

public Ds\Set::last(): mixed

Returns

This method returns the last element of the Set as a return value. If the set is empty, then UnderflowException is thrown.

Example

<?php
$set = new \Ds\Set([10, 20, 30]);
var_dump($set->last());
?>

Output

int(30)

Explanation

In the code above,

  • We have created an object of the type Set data structure and added elements using the add method.

  • Then we used the last method of the Set to get the last value. We will get 30 as the result.

RELATED TAGS

php
communitycreator

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

Keep Exploring