match often used to work with enums, let's look at this example:
enum NextStep {
TurnLeft,
TurnRight
}
fn main() {
let next_step = NextStep::TurnLeft;
match next_step {
NextStep::TurnLeft => println!("turn left"),
NextStep::TurnRight => println!("turn right"),
}
}
It may not be obvious, but enums in Rust can be brought into the current namespace, allowing for more compact code:
// ...
use NextStep::*;
match next_step {
TurnLeft => println!("turn left"),
TurnRight => println!("turn right"),
}
// ...
And, to limit the effect to just match, you will have to set boundaries using {} for an additional scope:
// ...
{
use NextStep::*;
match next_step {
// ...
}
}
// ...
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