json_decode

Function map2

Source 
pub fn map2<'a, F, _1, _2, NewDecodesTo>(
    func: F,
    _1: BoxDecoder<'a, _1>,
    _2: BoxDecoder<'a, _2>,
) -> BoxDecoder<'a, NewDecodesTo>
where
    F: Fn(_1, _2) -> NewDecodesTo + 'a + Send + Sync,
    NewDecodesTo: 'a,
    _1: 'a,
    _2: 'a,