pub fn lift_sync_fn3<'a, T1, T2, T3, T4, E1, F: FnOnce(T1, T2, T3) -> Result<T4, E1> + Send + Sync + 'a>(
f: F,
) -> BoxedFn3<'a, T1, T2, T3, T4, E1>Expand description
Function to box FnOnce sync function with 3 aguments and coerce it to BoxedFn3