On 20.04.2012 8:44, Denis Shelomovskij wrote:
20.04.2012 8:06, H. S. Teoh написал:
I'm writing some code that does some very simplistic parsing, and I'm
just totally geeking out on how awesome D is for writing such code:
import std.conv;
import std.regex;
import std.stdio;
struct Data {
string name;
string phone;
int age;
... // a whole bunch of other stuff
}
void main() {
Data d;
foreach (line; stdin.byLine()) {
auto m = match(line, "(\w+)\s+(\w+)");
It's better not to create a regex every iteration. Use e.g.
---
auto regEx = regex(`(\w+)\s+(\w+)`);
---
before foreach. Of course, you are not claiming this as a
high-performance program, but creating a regex every iteration is too
common mistake to show such code to newbies.
And that's why I pluged this hole - it happens too often. At least up to
mm... 16 regexes are cached.
--
Dmitry Olshansky
