vector - Rust 中的二维向量

Question

Editor's note: This question predates Rust 0.1 (tagged 2013-07-03) and is not syntactically valid Rust 1.0 code. Answers may still contain valuable information.

有谁知道如何在 Rust 中创建可变的二维向量并将它们传递给要操作的函数？

这是我到目前为止尝试过的:

extern crate std;

fn promeni(rec: &[u8]) {
    rec[0][1] = 0x01u8;
}

fn main() {
    let mut rec = ~[[0x00u8,0x00u8],
        [0x00u8,0x00u8]
    ];
    io::println(u8::str(rec[0][1]));
    promeni(rec);
    io::println(u8::str(rec[0][1]));
}

Answer 1

你可以使用宏 vec!创建二维向量。

fn test(vec: &mut Vec<Vec<char>>){
    vec[0][0] = 'd';
    ..//
    vec[23][79] = 'd';
}

fn main() {

    let mut vec = vec![vec!['#'; 80]; 24];

    test(&mut vec);
}