如何指定特征界限或逻辑
我希望以一般方式以RUST的形式实现2D矩阵功能，其中矩阵的元素将是数字（i32，i64，u32，u32，u64，f32，f64）。通用类型看起来如下所示：
#[derive(Debug)]
pub struct Mat<T> {
data: Vec<T>,
shape: (usize, usize),
}
impl<T> Mat<T> where T: i32 OR i64 OR u32 OR u64 OR f32 OR f64{
pub fn new(){
...
}
}
我知道您可以和特征与 + 符号以“ ”的形式，其中t：bound1 + bound2 ”。有没有一种方法可以干净地或特征界限在一起？
I am looking to implement 2D matrix functionality in Rust in a generic fashion where the elements of the matrix would be numerics (either i32, i64, u32, u64, f32, f64). The generic type would look something like shown below:
#[derive(Debug)]
pub struct Mat<T> {
data: Vec<T>,
shape: (usize, usize),
}
impl<T> Mat<T> where T: i32 OR i64 OR u32 OR u64 OR f32 OR f64{
pub fn new(){
...
}
}
I know that you can AND trait bounds with the + symbol in the form of "where T: bound1 + bound2". Is there a way to cleanly OR trait bounds together?
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不，但这通常不是您想要的。您可以通过声明标签性状来做到这一点，例如：
通常您实际上试图完成的工作是强制执行
t支持某些操作，例如加法和乘法。如果是这样，只需绑定这些操作：这将涵盖所有原始数字类型，但 也涵盖了定义这些操作的其他类型，例如第三方“十进制”或“大数字”（例如128/256/512位整数）类型。
No, but this isn't usually what you want anyway. You can do this by declaring a tag trait, like:
However, usually what you're actually trying to accomplish is enforcing that
Tsupports some set of operations like addition and multiplication. If so, just bound on those operations:This will cover all of the primitive numeric types, but will also cover other types for which those operations are defined, such as third-party "decimal" or "big number" (e.g. 128/256/512-bit integers) types.