我可以将参数作为数组传递吗?
问题描述:
例如,代替
assert_eq!(add(2,3), 5);
有什么方法可以调用类似的东西
is there some way to call something like
let params: [u32; 2] = [2 ,3];
assert_eq!(call!(&add, params), 5);
我会发现此功能对于测试非常有用.例如,如果我想为需要大量参数的函数编写多个测试,则希望能够重用这样的虚拟参数对象:
I would find this functionality very useful for testing. E.g., if I want to write multiple tests for a function that takes a large number of params, I want to be able to reuse a dummy param object like this:
#[cfg(test)]
mod tests {
const dummy: [u32; 5] = [0, 0, 0, 0, 0];
#[test]
fn test_first_param() {
let mut params = dummy;
params[0] = 1;
assert_eq!(call!(&add, params)), 1);
}
#[test]
fn test_second_param() {
let mut params = dummy;
params[1] = 1;
assert_eq!(call!(&add, params)), 1);
}
}
如果不存在此功能,那么有人会对我制作和发布宏感兴趣吗?
If this functionality does not exist, would anyone be interested in me making and publishing a macro?
答
该语言中没有任何功能可以枚举数组并将每个元素作为参数传递.您确实需要一个宏.
There's no feature in the language that enumerates over an array and passes each element as an argument. You're correct that you'd need a macro.