如何解决函数中的Go数组大小

Question

I just started using Go, and one thing that makes me nervous is that if I define a function that accepts an array, and then pass an array to a function with a specific size, VS Code complains about it.

For example, I have something like this:

func cmplt(a, b []uint64) uint64 {
    var r, m, i uint64
    r = 0
    m = 0

    for i = 2; i >= 0; i-- {
        r |= LtUint64(a[i], b[i]) & ^m
        m |= MaskUint64(NeUint64(a[i], b[i]))
    }

    return r & 1
}

And then I call this function inside another function as:

func singleSample(in []uint64) uint64 {
    var i, index uint64
    index = 0

    for i = 0; i < 52; i++ {
        index = SelectUint64(index, i+1, cmplt(in, table[i]))
    }

    return index
}

where table has type [52][3]uint64. I get an error message saying: cannot use table (type [3]uint64) as []uint64 in argument to cmplt.

Is there any way in Go to workaround this, instead of specifically specifying the array size in function parameter?

Answer 1

Your cmplt is expecting a uint64 slice, and not a 3 element array. Taking a slice of table[i] will fix the error:

cmplt(in, table[i][:])