Macro crs_bind::select_merge

macro_rules! select_merge {
    { $( $var:pat = $event:expr => $body:expr ),+ $(,)? } => { ... };
}

Generates a future event (i.e. one which implements crate::rtos::Selectable) from a similar recipe as the select macro, combining the behaviour of crate::rtos::select_map and select_any.

There is one important difference to note between this macro and select: since this macro needs to generate an object containing the event processing recipe, the body expressions are placed inside lambdas, and therefore contextual expressions such as break, continue and return are not valid.