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resolv: use safe navigation operator to avoid extra hash lookups

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@addr2name is a private Hash and never changes its default_proc,
so only pay the hash lookup cost once; we know missing entries
in the hash will be nil.

* lib/resolv.rb (each_name): use safe navigation operator

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56890 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
normal 2016-11-23 23:57:30 +00:00
parent 376e57fee1
commit 214eecd391
1 changed files with 1 additions and 3 deletions
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4
lib/resolv.rb
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@ -264,9 +264,7 @@ class Resolv
def each_name(address, &proc)
lazy_initialize
if @addr2name.include?(address)
@addr2name[address].each(&proc)
end
@addr2name[address]&.each(&proc)
end
end