[Elixir] How do I create and call a function in Elixir?

To create and call a function in Elixir, you can follow these steps:

  1. Open your Elixir code file in a text editor or an Integrated Development Environment (IDE).

  2. Start by defining a function using the def keyword, followed by the function name, arguments, and do/end block. For example, let's create a simple function that adds two numbers:

1def add(a, b) do
2  result = a + b
3  result

In this example, the function add takes two arguments a and b and returns the sum of a and b.

  1. To call the function, use the function name followed by parentheses and pass the required arguments. Assign the result to a variable or use it as needed. For example:
1result = add(5, 3)
2IO.puts(result) # Output: 8

In this example, the add function is called with arguments 5 and 3, and the result is assigned to the variable result. Then, the result is printed using the IO.puts function.

That's it! You have successfully created and called a function in Elixir. Remember to save your file with a .ex extension (e.g., myfile.ex) and compile/run it using the Elixir compiler or interpreter.