Use next:
(1..10).each do |a|
next if a.even?
puts a
end
prints:
1
3
5
7
9
For additional coolness check out also redo and retry.
Works also for friends like times, upto, downto, each_with_index, select, map and other iterators (and more generally blocks).
For more info see http://ruby-doc.org/docs/ProgrammingRuby/html/tut_expressions.html#UL.
next - it's like return, but for blocks! (So you can use this in any proc/lambda too.)
That means you can also say next n to "return" n from the block. For instance:
puts [1, 2, 3].map do |e|
next 42 if e == 2
e
end.inject(&:+)
This will yield 46.
Note that return always returns from the closest def, and never a block; if there's no surrounding def, returning is an error.
Using return from within a block intentionally can be confusing. For instance:
def my_fun
[1, 2, 3].map do |e|
return "Hello." if e == 2
e
end
end
my_fun will result in "Hello.", not [1, "Hello.", 2], because the return keyword pertains to the outer def, not the inner block.
Source: Stackoverflow.com