LANGUAGE » RUBY

Loop

Last updated:

While syntax ​

ruby
while cond
  do_something
end

until cond
  do_something
end

For syntax ​

ruby
## Include last number
for num in 1..10
  puts num
end

## Exclude last number
for num in 1...10
  puts num
end

Do syntax ​

do + end is the same as { + }.

ruby
95.upto(100) do |num|
  puts num
end

95.downto(90) do |num|
  puts num
end

my_array.each do |item|
  do_something
end

10.times do
  do_something
end

Loop syntax ​

ruby
loop do
  next if cond  # Same as continue, skip this iteration
  do_something
  break if cond
end