Trait FromValue 

pub trait FromValue: Sized {
    // Required method
    fn from_value(v: Value, span: Span) -> Result<Self, Error>;
}

Converts a Value into a typed Rust value, or returns a runtime error. Implemented for i64, f64, String, bool, char, Vec<T>, and Value itself.

Required Methods

fn from_value(v: Value, span: Span) -> Result<Self, Error>

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl FromValue for bool

fn from_value(v: Value, span: Span) -> Result<Self, Error>

impl FromValue for char

fn from_value(v: Value, span: Span) -> Result<Self, Error>

impl FromValue for f64

fn from_value(v: Value, span: Span) -> Result<Self, Error>

impl FromValue for i64

fn from_value(v: Value, span: Span) -> Result<Self, Error>

impl FromValue for String

fn from_value(v: Value, span: Span) -> Result<Self, Error>

impl<T: FromValue> FromValue for Vec<T>

fn from_value(v: Value, span: Span) -> Result<Self, Error>

Implementors

impl FromValue for Value