Scan by service UUID

- [Instructor] Another way we can make…the connection more efficient in our app, is by…only scanning for peripherals that we're interested in.…We can limit this by specifying the services…we're interested in, for peripherals we want to scan.…You should still check to make sure…that the devices discovered,…match what you're looking for.…We've been doing this by checking the name…and making sure it contains sensor tag.…So when scan for peripherals,…we can pass in the services we're interested in,…just like we did on line 32…with retrieve connect the peripherals.…

So I'll simply copy and paste…this array of the single service that we're interested in…and paste it where we scanned for peripherals.…I'll also do this in the disconnect peripheral call for…scanning and replace the nil on line 58 with the same array.…Just as we want to re-scan when the peripheral disconnects,…we should also call that…when we fail to connect to a peripheral.…So on line 57, I'll override…the function did fail to connect to peripheral.…I'm going to use the same body as when the peripheral…