Run all of Xcode's "Fix-it"s at once
XCode's "fix-it" isn't always reliable enough to make the changes that the code needs to run properly. Even if there was such a button, I wouldn't advise using it. The only thing I can think of to make it quicker to go through is to use: Navigate > Jump to Next Issue which would mean you wouldn't have to comb through the code to find all of the errors, Xcode would take you straight to them.
