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author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-11-05 02:50:15 +0000 |
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committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-11-05 02:50:15 +0000 |
commit | aafdba6be57cd64f9c24c741c6d40c500d022673 (patch) | |
tree | 43c9362982dc931f7dd324fb31545db6bb7a7ca0 | |
parent | 2e45c6a2b2f2cc6e5f81cbbd46a420429b9b6521 (diff) | |
download | ruby-aafdba6be57cd64f9c24c741c6d40c500d022673.tar.gz |
[DOC] add explanation for Array#sum
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56566 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
-rw-r--r-- | array.c | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -5717,7 +5717,8 @@ rb_ary_dig(int argc, VALUE *argv, VALUE self) * ["a", "b", "c"].sum("") #=> "abc" * [[1], [[2]], [3]].sum([]) #=> [1, [2], 3] * - * However, Array#join and Array#flatten is faster than Array#sum. + * However, Array#join and Array#flatten is faster than Array#sum for + * array of strings and array of arrays. * * ["a", "b", "c"].join #=> "abc" * [[1], [[2]], [3]].flatten(1) #=> [1, [2], 3] |