slice_range_negative

🔧 Slicing with Ranges and Negative Indices

Ruby’s Array#slice and range syntax let you extract subarrays without mutating the original, and negative indices count from the end. This is handy for grabbing chunks or trimming elements without boilerplate loops.

arr = %w[a b c d e f]
# Positive range
sub = arr[1..3]      # => ["b", "c", "d"]
# Exclusive range
sub_ex = arr[1...3]  # => ["b", "c"]
# Negative indices
last_two = arr[-2, 2] # => ["e", "f"]