^ This this this this this this. And it's a two fold thing you have to do as a developer of anything: Don't get emotionally attached to your code, and always m

^ This this this this this this. And it's a two fold thing you have to do as a developer of anything: Don't get emotionally attached to your code, and always make sure it's crystal clear that you have problems with someone else's code. Never let it get personal. If you can't go have a beer with this person after you tear up some of their work, then you're failing as a collaborator IMHO.