What is IO.readlines() in Ruby?
Overview
The IO instance is used for all input and output operations in Ruby. When we use the readlines() method to read a file, it returns individual lines of a file as an array.
Syntax
IO.readlines(filename)
The readlines() method in Ruby
Parameters
filename: This is the name of the file.
Return value
This method returns an array containing individual lines of the file filename.
Code example
Let's look at the code below:
main.rb
text.txt
Welcome to edpressoPlease to meet you!Happy learning!
Code explanation
We create a file named text.txt and write some contents in it:
- Line 2: We use the
readlines()method to get the contents of the file we created, line by line, as an array. - Line 5: We print this array to the console.
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