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* array.c (rb_ary_select_bang): select! removes all elements for

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which block returns false.  [ruby-core:27286]

* array.c (rb_ary_keep_if): #keep_if, new method.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26800 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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matz 2010-03-03 05:35:08 +00:00
parent 35345f1c09
commit 006a8ba77f
3 changed files with 76 additions and 0 deletions
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16
test/ruby/test_array.rb
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@ -1590,6 +1590,22 @@ class TestArray < Test::Unit::TestCase
assert_equal([0, 2], [0, 1, 2, 3].select {|x| x % 2 == 0 })
end
# also keep_if
def test_select!
a = @cls[ 1, 2, 3, 4, 5 ]
assert_equal(nil, a.select! { true })
assert_equal(a, a.keep_if { true })
assert_equal(@cls[1, 2, 3, 4, 5], a)
a = @cls[ 1, 2, 3, 4, 5 ]
assert_equal(a, a.select! { false })
assert_equal(@cls[], a)
a = @cls[ 1, 2, 3, 4, 5 ]
assert_equal(a, a.select! { |i| i > 3 })
assert_equal(@cls[4, 5], a)
end
def test_delete2
a = [0] * 1024 + [1] + [0] * 1024
a.delete(0)