Re: Most performant way of converting int to string

[Andrew Chapman via Digitalmars-d-learn]

On Tuesday, 22 December 2015 at 17:18:16 UTC, cym13 wrote:
On Tuesday, 22 December 2015 at 17:15:27 UTC, Andrew Chapman 
wrote:
Sorry if this is a silly question but is the to! method from 
the conv library the most efficient way of converting an 
integer value to a string?

e.g.
string s = to!string(100);

I'm seeing a pretty dramatic slow down in my code when I use a 
conversion like this (when looped over 10 million iterations 
for benchmarking).

Cheers!

Out of curiosity a slow down compared to what? No conversion at 
all?

Yeah, if I include a simple conversion in my loop:

        for({int i; i = 0;} i < num; i++) {
                //string s = to!string(i);
                Customer c = Customer(i, "Customer", "99998888", 
i * 2);
                string result = objS.serialize(c);
        }

If I uncomment the "string s" line I'm seeing a 20% increase in 
running time, which given what's going on the rest of the code is 
quite surprising.  I've tried compiling with both dmd and ldc2 - 
it's the same under both.

Cheers.