[jira] [Created] (MESOS-4706) Option should provide symmetric comparison operators

["Benjamin Bannier (JIRA)" <ji...@apache.org>]

Benjamin Bannier created MESOS-4706:
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             Summary: Option should provide symmetric comparison operators
                 Key: MESOS-4706
                 URL: https://issues.apache.org/jira/browse/MESOS-4706
             Project: Mesos
          Issue Type: Improvement
          Components: stout
            Reporter: Benjamin Bannier


Currently {{Option}} provides comparison operators as members functions. This means that in any comparison the lhs must always be an {{Option}} for operators to be triggered, e.g., for {{operator==}}

{code}
Option<int>(1) == 1;  // (1) works

1 == Option<int>(1);  // (2) doesn't work ("invalid operands to binary expression ('int' and 'Option<int>')")
{code}

The same problem exists for {{operator!=}}.

{{EXPECT_EQ}} and {{EXPECT_NE}} interpret their first argument as an expected value, and the second one as the actual one; this requires support for variant {{(2)}}.




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