Question

Which function can combine the functionalities of push, pop, unshift and shift?

(a) splice

(b) add

(c) delete

(d) split

I have been asked this question in class test.

My enquiry is from perl topic in division Awk – An Advanced Filter & Perl – The Master Manipulator of Unix

Answer 1

Correct option is (a) splice

Explanation: The splice function can perform all the four functions performed by these functions. It uses upto four arguments to add or remove elements at any location of the array. The second argument is the offset from where we’ve to perform insertion or deletion, the third argument represents the number of elements to be removed. If it is 0, elements are to be added. The fourth argument specifies the new replaced list. For example,