Trait DeserializeOrDefault 

pub trait DeserializeOrDefault<T>: Sized {
    // Required method
    fn deserialize_or_default(
        dcx: &DiagCtxt<'_>,
        value: &Spanned<DeValue<'_>>,
        default: T,
    ) -> Self;
}

A type which can be deserialized from a toml value with a fallback to a default value.

Required Methods

fn deserialize_or_default( dcx: &DiagCtxt<'_>, value: &Spanned<DeValue<'_>>, default: T, ) -> Self

Attempt to deserialize the value. Returns the default value and raises an error on failure.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl<T, U, S> DeserializeOrDefault<&'static [U]> for HashSet<T, S>

where T: Deserialize + FromDefault<U> + Eq + Hash, U: Copy, S: Default + BuildHasher,

fn deserialize_or_default( dcx: &DiagCtxt<'_>, value: &Spanned<DeValue<'_>>, default: &'static [U], ) -> Self

impl<T, U> DeserializeOrDefault<&'static [U]> for Vec<T>

where T: Deserialize + FromDefault<U>, U: Copy,

fn deserialize_or_default( dcx: &DiagCtxt<'_>, value: &Spanned<DeValue<'_>>, default: &'static [U], ) -> Self

impl<T: Deserialize> DeserializeOrDefault<()> for Option<T>

fn deserialize_or_default( dcx: &DiagCtxt<'_>, value: &Spanned<DeValue<'_>>, (): (), ) -> Self

Implementors

impl DeserializeOrDefault<()> for SourceItemOrdering

impl DeserializeOrDefault<()> for SourceItemOrderingModuleItemGroupings

impl DeserializeOrDefault<()> for SourceItemOrderingTraitAssocItemKinds

impl DeserializeOrDefault<()> for SourceItemOrderingWithinModuleItemGroupings

impl DeserializeOrDefault<()> for TraitImplItemOrder

impl<T: Deserialize + Default> DeserializeOrDefault<()> for T

impl<T: Deserialize + FromDefault<T>> DeserializeOrDefault<T> for T