Macro over::try_arr

macro_rules! try_arr {
    [ $( $elem:expr ),+ , ] => { ... };
    [ $( $elem:expr ),+ ] => { ... };
}

Given an array of elements, converts each element to values and returns an Arr containing a vector of the values. Returns an OverResult instead of panicking on error. To create an empty Arr, use arr! as it will never fail.