Trait AreaObjectDesc 

pub trait AreaObjectDesc {
    // Required method
    fn area(&self) -> &Option<Area>;
}

有区域对象

Required Methods

fn area(&self) -> &Option<Area>

Dyn Compatibility

This trait is dyn compatible.

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

Implementations on Foreign Types

impl AreaObjectDesc for Option<Area>

fn area(&self) -> &Option<Area>

Implementors

impl AreaObjectDesc for SubDescNone

impl<T> AreaObjectDesc for NamedObjectDesc<T>

where T: DescContent, T::AreaType: AreaObjectDesc,

NamedObjectDesc 的 AreaObjectDesc 自动实现

如果 T::AreaType 实现了 AreaObjectDesc 则自动为 NamedObjectDesc 实现 AreaObjectDesc