Ruby loops
From wikinotes
Keywords
next # continue to next loop redo # redo current loop break # exit loop
ranges
3.times { puts "hi!" } 3.upto(10) { |i| puts i } ('a'..'e').each {|char| puts char } *(1..100).map {|x| puts x}5.times do puts 'hi' end5.times { puts 'hi' }for i in 1..5 puts 'hi' end
each
animals = ['cat', 'dog', 'bear'] animals.each do |animal| puts animal end # animal IS NOT assigned within scope['a', 'b', 'c'].each_with_index.map do |letter, index| puts "#{letter} at #{index}" end
for in
animals = ["cat", "dog", "bear"] for animal in animals puts animal end # animal IS assigned within scope
while
while i < 100 puts i i += 1 endvar = var + 1 while var < 100