perl - split() but keep delimiter

Question

I have never used Perl before and I have a basic question.

 my $string1 = "Hi. My name is Vlad. It is snowy outside.";

 my @array = split('.' $string1); ##essentially I want this, but I want the period to be kept

I want to split this string at the '.' But I want to keep the period. how can this be accomplished?

Answer 1

You can use lookbehind to do this:

split(/(?<=.)/, $string)

The regex matches an empty string that follows a period.

If you want to remove the whitespace between the sentences at the same time, you can change it to:

split(/(?<=.)s*/, $string)

Positive and negative lookbehind is explained here