On Monday, 26 June 2023 at 08:26:31 UTC, Jonathan M Davis wrote:
On Sunday, June 25, 2023 4:08:19 PM MDT Cecil Ward via
Digitalmars-d-learn wrote:
I recently had some problems
dchar[] arr = [ ‘ ‘, TAB, CR, LF … ];
and I got errors from the compiler which led to me having to
count the elements in the initialiser and declare the array
with
an explicit size. I don’t want the array to be mutable so I
later
added immutable to it, but that didn’t help matters. At one
point, because the array was quite long, I got the arr[
n_elements ] number wrong, it was too small and the remainder
of
the array was full of 0xffs (or something), which was good,
helped me spot the bug.
Is there any way to get the compiler to count the number of
elements in the initialiser and set the array to that size ?
And it’s immutable.
Without seeing the errors, I can't really say what the problem
was, but most character literals are going to be char, not
dchar, so you may have had issues related to the type that the
compiler was inferring for the array literal. I don't recall at
the moment how exactly the compiler decides the type of an
array literal when it's given values of differing types for the
elements.
Either way, if you want a static array, and you don't want to
have to count the number of elements, then
https://dlang.org/phobos/std_array.html#staticArray should take
care of that problem.
- Jonathan M Davis
Where I used symbolic names, such as TAB, that was defined as an
int (or uint)
enum TAB = 9;
or
enum uint TAB = 9;
I forget which. So I had at least one item that was typed
something wider than a char.
I tried the usual sizeof( arr )/ sizeof dchar, compiler wouldn’t
have that for some reason, and yes I know it should be D syntax,
god how I long for C sizeof()!
