If you want to iterate over a
Range
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, but only look at every n-th element, use the
step
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method:
(0..10).step(5).each do |i|
puts i
end
# Prints three lines:
# 0
# 5
# 10
This is useful e.g. to iterate over every Monday in a range of Dates.
If you are using Rails or ActiveSupport, calling step without a block will return an array of matching elements:
(0..10).step(5)
# => [0, 5, 10]
Posted by Henning Koch to makandra dev (2011-01-07 10:14)