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Posted to dev@mesos.apache.org by "Dominic Hamon (JIRA)" <ji...@apache.org> on 2014/03/05 00:37:42 UTC

[jira] [Created] (MESOS-1055) Add explicit to single argument constructors

Dominic Hamon created MESOS-1055:
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             Summary: Add explicit to single argument constructors
                 Key: MESOS-1055
                 URL: https://issues.apache.org/jira/browse/MESOS-1055
             Project: Mesos
          Issue Type: Improvement
          Components: c++ api
            Reporter: Dominic Hamon
            Priority: Minor


>From the google style guide:

Normally, if a constructor takes one argument, it can be used as a conversion. For instance, if you define Foo::Foo(string name) and then pass a string to a function that expects a Foo, the constructor will be called to convert the string into a Foo and will pass the Foo to your function for you. This can be convenient but is also a source of trouble when things get converted and new objects created without you meaning them to. Declaring a constructor explicit prevents it from being invoked implicitly as a conversion.

Implicit conversions should be the exception to avoid unwanted and unexpected behaviour.



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