Code conventions some times are hard to follow and when you are not alone doing the project any more is nice to have a pleasant read of all the project code.

You can use uncrustify to delegate code conventions to an script and not worry any more about spaces after open parenthesis also there is a Xcode plugin so it's easier.

You can use brew to install uncrustify and for the xcode plugin here is the github page https://github.com/benoitsan/BBUncrustifyPlugin-Xcode

Now there are no more excuses for not having a beautiful code.