programming-elixir-ch5-shorthand-notation.ex

# Shorthand notation for anonymous functions in Elixir

sum = fn (a, b) -> a + b end # This is the normal notation for anonymous functions in Elixir
sum = &(&1 + &2) # This is the shorthand notation.

# The initial & is equivalent to the `fn` and `end` keywords.
# Within the parentheses, &1 refers to the first parameter, and &2 refers to the second parameter.
# If your anonymous function has more parameters, you can continue naming them in the same way.

# Just for comparison, here's the normal and shorthand notation for anonymous functions in JavaScript.

const sum = function (a, b) { return a + b; }; # Normal notation
const sum = (a, b) => a + b; # Shorthand notation