Scalar operations with complex array and complex scalars

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難度
4/5
預估耗時
3-5 天
新手友好度
35/100
Issue 類型
缺陷
描述清晰度
需要釐清
活躍度
停滯
技術堆疊
rust
領域
data

研究方向

The issue provides a Rust reproduction using ndarray arrays and num_complex::Complex64; start by tracing ndarray's scalar operator implementations and existing multiplication tests. Check the trait constraints for combinations of Complex64 and f64. Done means the reported operations have regression coverage and work as requested, or their unsupported status is clearly explained.

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描述

Hi there,

thanks a lot for the nice library! I hope this is the right place to ask questions! Please feel free to close if it's not.

I am having problems understanding why the following is not working.

use num_complex::Complex64;
use ndarray::arr1;

fn main() {
    let complex_array = arr1(&[Complex64::from(1.0), Complex64::from(2.0)]);
    let complex_scalar = Complex64::from(1.0);
    let f_scalar = 1.0;
    let f_array = arr1(&[1.0, 2.0]);
    println!("{}", &complex_array * f_scalar);
    println!("{}", &complex_array * complex_scalar);
    println!("{}", complex_scalar * &complex_array);
    // println!("{}", complex_scalar * &f_array); // <- not working
    // println!("{}", f_scalar * complex_array); // <- not working
}

I could circumvent these problems by manually iterating through arrays but it makes the code less readable and less ergonomic. Maybe someone could help me understand why these operations are a problem.

主要語言
Rust
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4.3k
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