On Tuesday, 7 July 2015 at 08:06:50 UTC, tcak wrote:
I have never used arrays in that way before, though I don't get
why you are writing return line in that way. Shouldn't it be
like `return (x[] * x[]);` ?
There's nothing fundamentally wrong with doing that in the return
line. For instance, the one I duplicated the array on looks like
int[] square_array_dup(int[] x)
{
auto y = x.dup;
return y[] *= x[];
}
To get your way to work requires
int[] square_array(int[] x)
{
int[] y;
y.length = x.length;
y[] = x[] * x[];
return y;
}
which can be slower.
Anyway, the main reason I used x[] *= x[] was that the original
code I had written was not in a function and was just
void main()
{
int len = 10;
auto x = len.iota.array;
x[] *= x[];
}
Obviously, in this case, I can just do a map before putting it
into an array, but then I got more interested in squaring arrays.
