Answer 1

Alright I missed the phone part. :-) Did not expect that an explanation is required for "-" and ">"

Answer 2

it's just a hyphen "-"and an arrow ">", and don't listen to the other guy Visual Studio doesn't exist on phones

Answer 3

You mean the "->" operator? This operator is only valid for use on pointers so your Visual Studio or whatever you use might not give you code completion using it.