From the course: Perl 5 Essential Training
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List and array functions - Perl Tutorial
From the course: Perl 5 Essential Training
List and array functions
- [Voiceover] Perl has a number of useful functions for working with lists and arrays. We've already seen push, pop, shift, and unshift. Here's a few other useful functions. Here I have a working copy of array.pl from chapter 13 of the exercise files, and when I run this, you see we have a list of elements from this array. So let's start with the grep function. The grep function searches and locates elements in a list or array that test true against a given, regular expression. So I can say grep and give it a regular expression and the array, and when I run this, you notice that it's only finding the elements in that array that match that expression. In this case, I was looking for anything with a t in it. I can also give it a negative expression by putting an exclamation point in front of the regular expression. This will search for elements that do not match that, and so here I get the other two. There's also an alternative syntax for grep with instead of just the regular…
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