Trait ExtractArgFromJs

pub trait ExtractArgFromJs<'a>: Sized {
    // Required method
    fn convert_arg_at(
        js_cb: &'a JsCallback,
        index: usize,
    ) -> Result<Self, NjError>;

    // Provided method
    fn label() -> &'static str { ... }
}

Required Methods

fn convert_arg_at(js_cb: &'a JsCallback, index: usize) -> Result<Self, NjError>

convert js callback argument at index

Provided Methods

fn label() -> &'static str

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<'a, T> ExtractArgFromJs<'a> for Option<T>

where T: JSValue<'a>,

fn label() -> &'static str

fn convert_arg_at( js_cb: &'a JsCallback, index: usize, ) -> Result<Option<T>, NjError>

Implementors

impl ExtractArgFromJs<'_> for JsEnv

impl<'a, T> ExtractArgFromJs<'a> for T

where T: JSValue<'a>,