pub trait Numeric:
Neg<Output = Self>
+ Add<Output = Self>
+ Sub<Output = Self>
+ Mul<Output = Self>
+ Div<Output = Self>
+ AddAssign
+ SubAssign
+ From<i32>
+ Copy
+ Clone
+ Default
+ Sized
+ 'static { }Expand description
定义 Numeric trait，约束 T 必须实现基本数值运算 包括：
- 一元负号运算 (Neg)
- 加减乘除运算 (Add, Sub, Mul, Div)
- 复合赋值运算 (AddAssign, SubAssign)
- 从i32转换 (From
) - 复制语义 (Copy, Clone)
- 默认值 (Default)
- 静态生命周期 (’static)
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.