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Merge pull request #15276 from kuldeepaggarwal/fix-array-to 

Array#to now accept negative position also.
This commit is contained in:
Rafael Mendonça França 2014-05-23 15:05:28 -03:00
parent cb7f03f061 0e9401733c
commit a312770118
2 changed files with 5 additions and 1 deletions
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4
activesupport/lib/active_support/core_ext/array/access.rb
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@ -17,8 +17,10 @@ class Array
# %w( a b c d ).to(2) # => ["a", "b", "c"]
# %w( a b c d ).to(10) # => ["a", "b", "c", "d"]
# %w().to(0) # => []
# %w( a b c d ).to(-2) # => ["a", "b", "c"]
# %w( a b c ).to(-10) # => []
def to(position)
first position + 1
self[0..position]
end
# Equal to <tt>self[1]</tt>.

2
activesupport/test/core_ext/array_ext_test.rb
View File

@ -18,6 +18,8 @@ class ArrayExtAccessTests < ActiveSupport::TestCase
assert_equal %w( a ), %w( a b c d ).to(0)
assert_equal %w( a b c ), %w( a b c d ).to(2)
assert_equal %w( a b c d ), %w( a b c d ).to(10)
assert_equal %w( a b c ), %w( a b c d ).to(-2)
assert_equal %w(), %w( a b c ).to(-10)
end
def test_second_through_tenth