GitHub user ryanm101 opened a pull request: https://github.com/apache/libcloud/pull/688
Comment for why if XXX and YYY != XXX: is used Following attempt to clean up what looked to me like a redundant check I found out it wasn't in fact redundant but was providing support for partial lookups Per Greg Hill's explanation: The problem is name and service_type are optional parameters that default to None, if you look at the method signature. This lets you pass in only one of them, neither, or both, and it does the right thing in all cases. I've added a comment to make this clear to future contributes. For others reading this where it still isn't clear if XXX and YYY != XXX: does not translate to: (as was my initial thought) if YYY != XXX: it actually translates to (we are checking if the Value is SET on the left side of the AND. if XXX: if YYY != XXX: You can merge this pull request into a Git repository by running: $ git pull https://github.com/ryanm101/libcloud trunk Alternatively you can review and apply these changes as the patch at: https://github.com/apache/libcloud/pull/688.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #688 ---- commit eb6c56777b8645e689b0996eb5af9b489ea6cccc Author: Ryan McLean <ryan1...@hotmail.com> Date: 2016-01-26T08:21:23Z Added explination for 'if XXX and YYY != XXX:' (in a nut shell provides support for partial lookups) commit 186c5b21850aab7ef5cc8670fd75013b1da8310c Author: Ryan McLean <ryan1...@hotmail.com> Date: 2016-01-28T10:28:40Z Merge remote-tracking branch 'upstream/trunk' into trunk commit 3cfb5d30938c5b847f5564a47713a0c22970a533 Author: Ryan McLean <ryan1...@hotmail.com> Date: 2016-01-28T10:35:09Z Removed trailing whitespace ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---