Don't exactly understand Switch

Switch is just another way to go through some value(s) and perform something when value is met

var value = 2
 switch value {
case 1:
// value is 1 do something
case 2:
// value is 2 do something
default:
// value is something else, do something
}

Same thing with if statement would be

if (value == 1) {
// value is 1 do something
} else if (value == 2) {
// value is 2 do something
} else {
// value is something else, do something
}

Bryan,

The "switch" statement is effectively an alternative method of writing an "if" statement. If you have a lot of possible outcomes for a particular situation, an "if/else if/else" style statement can get very long and verbose and out of control very quickly. The truncated syntax of the "switch" statement provides an easier-to-read (and manage) syntax for the same structure.

Erik

maybe it´s easier to understand with an example:

switch card {
    case 1: do this
    case 2: do that
    case 3: do something else
   ....
    default: do something, if nothing of the above applies
    }

case can be anything... String, Int, ... if a case is true, so if 1 is the current state or case, then "do this", if case 2 is currently true, then "do that".... and so on...

you can define as many cases as you want, important is that you also define a default, in case nothing applies....

i hope this helps. I highly recommend having a look at the SWIFT basic Course -> Control Flow This will explain it a lot better and easier to understand.