Trait mz_repr::fixed_length::FromDatumIter

pub trait FromDatumIter: Sized + Default {
    // Required methods
    fn from_datum_iter<'a, I, D>(&mut self, datum_iter: I) -> Self
       where I: IntoIterator<Item = D>,
             D: Borrow<Datum<'a>>;
    fn try_from_datum_iter<'a, I, D, E>(
        &mut self,
        datum_iter: I
    ) -> Result<Self, E>
       where I: IntoIterator<Item = Result<D, E>>,
             D: Borrow<Datum<'a>>;
}

A helper trait to construct target values from input Row instances.

Required Methods

fn from_datum_iter<'a, I, D>(&mut self, datum_iter: I) -> Self

where I: IntoIterator<Item = D>, D: Borrow<Datum<'a>>,

Obtains an instance of Self' given an iterator of borrowed datums and a schema provided by types`.

fn try_from_datum_iter<'a, I, D, E>(&mut self, datum_iter: I) -> Result<Self, E>

where I: IntoIterator<Item = Result<D, E>>, D: Borrow<Datum<'a>>,

Obtains an instance of Self' given an iterator of results of borrowed datums and a schema provided by types`.

In the case the iterator produces an error, the pushing of datums is terminated and the error returned.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl FromDatumIter for ()

fn from_datum_iter<'a, I, D>(&mut self, datum_iter: I) -> Self

where I: IntoIterator<Item = D>, D: Borrow<Datum<'a>>,

Obtains a unit value from an empty datum iterator.

fn try_from_datum_iter<'a, I, D, E>(&mut self, datum_iter: I) -> Result<Self, E>

where I: IntoIterator<Item = Result<D, E>>, D: Borrow<Datum<'a>>,

Obtains a unit value from an empty iterator of results of datums.

Implementors

impl FromDatumIter for Row