Basics
Elixir IO
Input/Output in Elixir
Elixir IO module handles console output and file operations.
Introduction to Elixir IO Module
The Elixir IO module is a fundamental part of the Elixir language, providing a simple and efficient way to handle input and output operations. Whether you are working with the console or files, the IO module offers a suite of functions to manage these tasks effectively.
Console Output with IO.puts/1
The most commonly used function for displaying output in Elixir is IO.puts/1. It prints a string followed by a newline to the standard output, usually the console.
Reading Input with IO.gets/1
The IO.gets/1 function is used to read a line of input from the user. It takes a prompt string as an argument, which is displayed to the user before waiting for input.
Working with Files
Elixir's IO module also provides functions to work with files. The IO.read/2 and IO.write/2 functions allow you to read from and write to files, respectively.
Reading from a File
To read the contents of a file, you can use the IO.read/2 function. It requires the file path and the number of bytes to read, or :line for line-by-line reading.
Writing to a File
To write to a file, use the IO.write/2 function. You'll need to open the file in write mode.
Conclusion
The Elixir IO module is a versatile tool for managing input and output in both console and file contexts. By mastering functions such as IO.puts/1, IO.gets/1, IO.read/2, and IO.write/2, you can efficiently handle data in your Elixir applications.
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