On Tuesday, 21 December 2021 at 08:11:39 UTC, Anonymouse wrote:
I'm not certain I understand, but won't `foreach (i, a; args) {
/* ... */ }` in his example do that?
As in, if you necessarily must index `args` instead of using a
foreach variable,
```d
import core.stdc.stdio : putc, stdout;
void print(T...)(string prompt, T args)
{
foreach (i, a; args)
{
alias A = typeof(args[i]);
static if (is(A : string))
{
for (int j = 0; j < args[i].length; j++)
{
putc(args[i][j], stdout);
}
}
else
{
// handle your other types
print("", A.stringof);
}
}
}
void main()
{
print("Prompt (ignored)", "Hello", " world!\n", 123);
}
```
No it will not. I will try to explain it the best way I can. When
I say I want to index args, I mean that I want to index and
choose which argument to use rather than use them continuously
one after another inside a `foreach`. For example check the
following call:
`print("Hello %s!%c", "world", '\n');`
In that case I want to first print print from "H" up to (but not
include) "%s". Then I want to print the first argument. After
that, I want to print the '!' character and then I want to print
the second argument. So I need a way to keep track which argument
was the last one I printed and manually choose which argument to
use. So `foreach` will not do in that case because I don't want
to continuously use the arguments one after another. Is is more
clear now? "writef" exists in phobos so I'm pretty sure that
there is a way to do that.
