Trait With 

pub trait With<F> {
    // Required methods
    fn shape() -> Shape;
    fn read(v: &ValueRef<'_>, cx: &mut Reader<'_>) -> Option<F>;
    fn write(f: &F) -> Value;

    // Provided methods
    fn absent() -> Option<F> { ... }
    fn skip(_f: &F) -> bool { ... }
}

How a field of type F is read and written.

Required Methods

fn shape() -> Shape

fn read(v: &ValueRef<'_>, cx: &mut Reader<'_>) -> Option<F>

fn write(f: &F) -> Value

Provided Methods

fn absent() -> Option<F>

The field’s value when it isn’t there (None: it’s required).

fn skip(_f: &F) -> bool

Whether a struct leaves the field out.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl With<String> for TextOf

impl<F, W: With<F>> With<BTreeMap<String, F>> for Values<W>

impl<F, W: With<F>> With<Option<F>> for Opt<W>

impl<F, W: With<F>> With<Vec<F>> for List<W>

impl<F: Schema> With<F> for Plain

impl<K: Kinds> With<String> for RefTo<K>