The inverse of this actually bit me when I was porting my company's app from iOS to Windows 8. We have a custom URI scheme to open stories in our app that looks

The inverse of this actually bit me when I was porting my company's app from iOS to Windows 8. We have a custom URI scheme to open stories in our app that looks like foo://<int>. On iOS, we just take the bit after the scheme and use it directly. Windows, however, was giving it to us as a dotted-decimal string, so we had to convert back from that to the integer representation before using it. That was the day I learned that these different kinds of representations could be used and to not assume anything about URIs.