❔ unsafe pointer operation

hi. im trying to rewrite code from other c# project to restore the sanity back. there is this one part that i dont quite understand:

byte[] arr = ...;
byte* buffer = arr;
var x = *buffer++; // actual line is much more complicated operations than this

byte[] arr = ...;
byte* buffer = arr;
var x = *buffer++; // actual line is much more complicated operations than this

what does the

*buffer++

*buffer++

do? is it equal to

buffer[index++]

buffer[index++]

buffer[index]++

buffer[index]++

. thanks.