Macro apparat::transitions

macro_rules! transitions {
    ($($state_a:ident -> $state_b:ident :: $function:ident),* $(,)*) => { ... };
}

Short hand for implementing the TransitionFrom trait for multiple state types, defining multiple transitions. This trait can easily be implemented manually too, so this macro is just an optional tool for convenience. Find a usage demo in the example “counter_transitions_macro”.