Blocks
Build a big expertise of Ruby –
One small block of knowledge at a time.
Array Decomposition
Elegant Array Handling in Ruby
Array decomposition allows you to extract values from arrays into individual variables. The splat operator (*
) lets you collect remaining elements.
# Simple decomposition
first, second, third = [1, 2, 3]
# With splat operator
first, *rest = [1, 2, 3, 4, 5]
# first = 1
# rest = [2, 3, 4, 5]
Great for method arguments, array manipulation, and working with fixed-length arrays. Use it to make your code more readable and maintainable.
Level 1: Metadata