Re: How do I check if a variable is a multidimensional (2D) array?
On Monday, 12 July 2021 at 05:08:29 UTC, jfondren wrote:
On Monday, 12 July 2021 at 04:25:00 UTC, Kirill wrote:
I know there is isArray!T and similar functionality in
std.traits. But I couldn't find the functionality that can
help me check if I have a multidimensional array. Is there
any? How do I create my own?
Thanks in advance.
from https://github.com/PhilippeSigaud/D-templates-tutorial
```d
template rank(T) {
static if (is(T t == U[], U))
enum size_t rank = 1 + rank!(U);
else
enum size_t rank = 0;
}
unittest {
int a;
int[] b;
int[][] c;
assert(rank!(typeof(a)) == 0);
assert(rank!(typeof(b)) == 1);
assert(rank!(typeof(c)) == 2);
}
```
as an example of a recursive template. There's also an
implementation for ranges.
Thanks!
Re: How do I check if a variable is a multidimensional (2D) array?
On Monday, 12 July 2021 at 04:25:00 UTC, Kirill wrote:
I know there is isArray!T and similar functionality in
std.traits. But I couldn't find the functionality that can help
me check if I have a multidimensional array. Is there any? How
do I create my own?
Thanks in advance.
from https://github.com/PhilippeSigaud/D-templates-tutorial
```d
template rank(T) {
static if (is(T t == U[], U))
enum size_t rank = 1 + rank!(U);
else
enum size_t rank = 0;
}
unittest {
int a;
int[] b;
int[][] c;
assert(rank!(typeof(a)) == 0);
assert(rank!(typeof(b)) == 1);
assert(rank!(typeof(c)) == 2);
}
```
as an example of a recursive template. There's also an
implementation for ranges.
How do I check if a variable is a multidimensional (2D) array?
I know there is isArray!T and similar functionality in std.traits. But I couldn't find the functionality that can help me check if I have a multidimensional array. Is there any? How do I create my own? Thanks in advance.
