Alexey Serbin has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/17034


Change subject: [gutil] EmplaceOrDie() to return reference
......................................................................

[gutil] EmplaceOrDie() to return reference

I found it's useful for EmplaceOrDie() to return a reference
to the object that is constructed in-place in the container.

To implement this change, I needed to use std::enable_if()
dance because EmplaceOrDie() is already used in Kudu codebase
for not only dictionary, but for set containers as well:
that's so in src/kudu/ranger/ranger_client.cc at least.

Change-Id: Ife1e07b7454078d3392555866fd32b89fac28af7
---
M src/kudu/gutil/map-util.h
M src/kudu/util/map-util-test.cc
2 files changed, 53 insertions(+), 6 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/34/17034/1
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ife1e07b7454078d3392555866fd32b89fac28af7
Gerrit-Change-Number: 17034
Gerrit-PatchSet: 1
Gerrit-Owner: Alexey Serbin <[email protected]>

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