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mention Array#sum with third-party gems.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54604 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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akr 2016-04-15 15:26:48 +00:00
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commit 4873e62103
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@ -68,9 +68,15 @@ with all sufficient information, see the ChangeLog file or Redmine
* Add an into option. [Feature #11191]
=== Stdlib compatibility issues (excluding feature bug fixes)
=== Compatibility issues (excluding feature bug fixes)
=== Built-in global variables compatibility issues
* Array#sum is implemented. Ruby itself has no compatibility problem
because Ruby didn't have sum method for arrays before Ruby 2.4.
However many third party gems, activesupport, facets, simple_stats, etc,
defines sum method. These implementations are mostly compatible but
there are subtle differences.
Ruby's sum method should be mostly compatible but it is impossible to
be perfectly compatible with all of them.
=== C API updates