Switch

The switch operator is simply a cleaner looking version of and if/else block. The first condition that matches win and all following condition checks are not executed. If you want to return a value from your switch block you will need a "default" clause.

x : 0
switch x {
    0 { /* x == 0 */ }
    1 { /* x == 1 */ }
}

// Or you can be explicit about the comparison
// using the _ to represent the value x
switch x {
    _ == 0 { /* x == 0 */ }
    _ > 0  { /* x > 0 */ }
}

// Or skip the switch variable
switch {
    x == 0 { /* x == 0 */ }
    y == 1 { /* y == 1 */ }
}

// You can use a switch block to return a value
canYouReadThis : switch {
    "yes" != "no" { "of course" }
    default       { "how did that happen?" }
}