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Posted to issues@mesos.apache.org by "haosdent (JIRA)" <ji...@apache.org> on 2016/03/26 09:22:25 UTC

[jira] [Created] (MESOS-5037) foreachkey behaviour is not expected in multimap

haosdent created MESOS-5037:
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             Summary: foreachkey behaviour is not expected in multimap
                 Key: MESOS-5037
                 URL: https://issues.apache.org/jira/browse/MESOS-5037
             Project: Mesos
          Issue Type: Bug
            Reporter: haosdent


Currently the {{foreachkey}} implementation is 
{code}
#define foreachkey(VAR, COL)                    \
  foreachpair (VAR, __foreach__::ignore, COL)
{code}

This works in most structures. But in multimap, one key may map to multi values. This means there are multi pairs which have same key. So when call {{foreachkey}}, the {{key}} would duplicated when iteration. My idea to solve this is we prefer call {{foreach}} on {{(COL).keys()}} if {{keys()}} method exists in {{COL}}.



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