It is common in a recursive function to amend a global array
using the function parameter to refer to the element eg
int[10];
void foo (int i) {
foreach (x; 0 .. 9) {
t[i] = x;
foo ();
C in a for loop allows use of t[i] directly as the iterating
variable so you don't need the dumm
Of course, in the first line I meant to say
int[10] t;
Issue has nothing to do with recursion. That's only where I keep
seeing it.
eg a function to generate combinations.
import std.stdio;
int[3] t;
void foo (int i) {
if (i == 3)
writef("%s\n", t);
else foreach (x; 0 .. 3) {
t[i] = x;
foo(i+1);
}
}
void main() {
foo(0);
}
I
Sorry, I am embarassed to say I've just tried the for equivalent
and it works with t[i] as the iterating variable.
import std.stdio;
int[3] t;
void foo (int i) {
if (i == 3)
writef("%s\n", t);
else for (t[i] = 0; t[i] < 3; t[i]++)
foo(i+1);
}
void main() {
foo(0);
}
Sorry, yet
