Macro rustcomp::iter_comp

macro_rules! iter_comp {
    (@__ for $($vars:pat),+ in $iter:expr; $($recurse:tt)+) => { ... };
    (@__ for $($vars:pat),+ in $iter:expr => $mapper:expr $(, if $guard:expr)? $(,)?) => { ... };
    (for $($t:tt)+) => { ... };
}

Generates an iterator that yields the results of the comprehension. For more information, see vec_comp!.