tree 50b84bc10acc126c0a431d3801348576b418d271
parent c8a9144dd77fa54a33fb4ea9d66592fbb7375999
author Guangya Liu <gyliu513@gmail.com> 1469824595 -0700
committer Benjamin Mahler <bmahler@apache.org> 1469824595 -0700

Used `subtract` instead of `-=` for `Resources::contains`.

The current logic of `Resources::contains` is using `-=` to remove
the contained resource object and the `-=` resource object will
invoke `validate` which is not necessary as all of the resource
objects are valid.

The fix is to use `subtract` instead of `-=` for
`Resources::contains`, this can make sure there is no validation
and can improve performance of `Resources::contains` for resources
object.

Review: https://reviews.apache.org/r/50553/