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Feature detection for Range#step extension

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This commit is contained in:
Jeremy Kemper
2009-03-29 02:43:13 -07:00
parent da8ade36b3
commit 48068bc1a4
1 changed files with 10 additions and 7 deletions
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17
activesupport/lib/active_support/core_ext/range/blockless_step.rb
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@@ -1,21 +1,24 @@
class Range
if RUBY_VERSION < '1.9'
begin
(1..2).step
# Range#step doesn't return an Enumerator
rescue LocalJumpError
# Return an array when step is called without a block.
def step_with_blockless(value = 1, &block)
def step_with_blockless(*args, &block)
if block_given?
step_without_blockless(value, &block)
step_without_blockless(*args, &block)
else
array = []
step_without_blockless(value) { |step| array << step }
step_without_blockless(*args) { |step| array << step }
array
end
end
else
def step_with_blockless(value = 1, &block) #:nodoc:
def step_with_blockless(*args, &block) #:nodoc:
if block_given?
step_without_blockless
step_without_blockless(*args, &block)
else
step_without_blockless(value).to_a
step_without_blockless(*args).to_a
end
end
end