How do I get rid of a white space in Perl?

This can be done using the trim function in Perl….The types of trim functions are:

  1. Left Trim (~ s/^\s+//): Removes extra spaces from leftmost side of the string till the actual text starts.
  2. Right Trim (~ s/\s+$//): Removes extra spaces from rightmost side of the string till the actual text end is reached.

What is whitespace in Perl?

All types of whitespace like spaces, tabs, newlines, etc. are equivalent to the interpreter when they are used outside of the quotes. A line containing only whitespace, possibly with a comment, is known as a blank line, and Perl totally ignores it.

How do I get rid of trailing new line in Perl?

The chomp() function in Perl is used to remove the last trailing newline from the input string.

  1. Syntax: chomp(String)
  2. Parameters: String : Input String whose trailing newline is to be removed.
  3. Returns: the total number of trailing newlines removed from all its arguments.

How do I split a space in Perl?

How can we split a string in Perl on whitespace? The simplest way of doing this is to use the split() function, supplying a regular expression that matches whitespace as the first argument.

What is Substr in Perl?

substr() in Perl returns a substring out of the string passed to the function starting from a given index up to the length specified. This function by default returns the remaining part of the string starting from the given index if the length is not specified.

Does whitespace matter in Perl?

Whitespace is needed to separate the two parts of circumfix (and postcircumfix) operators. See docs.perl6.org/type/Sub.

What is the difference between chop and chomp in Perl?

Perl’s chop and chomp functions can often be a source of confusion. Not only do they sound similar, they do similar things. Unfortunately, there is a critical difference—​chop removes the last character of the string completely, while chomp only removes the last character if it is a newline.

What is $$ in Perl?

$$ – The process number of the Perl running this script. $0 – Contains the name of the program being executed.

How do I slice a string in Perl?

Perl | split() Function. split() is a string function in Perl which is used to split or you can say to cut a string into smaller sections or pieces. There are different criteria to split a string, like on a single character, a regular expression(pattern), a group of characters or on undefined value etc..

What does split function do in Perl?

Description. This function splits a string expression into fields based on the delimiter specified by PATTERN. If no pattern is specified whitespace is the default. An optional limit restricts the number of elements returned.