On Friday, 29 July 2022 at 11:23:55 UTC, pascal111 wrote:
Is there an equivalent in D for C function "strstr" that return
the first occurrence of a given string within another string?
https://en.cppreference.com/w/c/string/byte/strstr
https://dlang.org/library/std/string/index_of.html
I never want to break your fervour. But D has what you've been
asking for a few days, or even better. Because we have a strong
type like `immutable(char[])`. In summary, it only took me 1
minute to compile the same code:
```d
// D 2.0.83
import std.string;
import std.stdio;
void find_str(string str, string substr)
{
import std.typecons : No;
auto pos = indexOf(str, substr, No.caseSensitive);
if(pos) {
writef("found the string '%s' in '%s' at position: %s\n",
substr, str, pos);
} else {
writef("the string '%s' was not found in '%s'\n", substr,
str);
}
}
int main()
{
string str = "one two three";
find_str(str, "two");
find_str(str, "");
find_str(str, "nine");
find_str(str, "n");
return 0;
}
```
Search and you will definitely find it. If you can't find it, D
handles this kind of thing anyway.
SDB@79
