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".

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>,