Smartest way to read a number?

[Fabian]

Hey guys.

I just want to write a few console applications. Usualy I have to read numbers
to calculate some values. But what's the smartest way to read and convert the
input?

I've coded these lines:

import std.stdio, std.string, std.conv;

T readNumber(T)()
{
        string buffer;
        stdin.readln(buffer);
        buffer = chomp(buffer);

        if(isNumeric(buffer))
        {
                return parse!T(buffer);
        }
        else
        {
                throw new Exception("Input is not a number!");
        }
}

void main()
{
        try
        {
                int n = readNumber!int();
                writeln(n);

                float f = readNumber!float();
                writeln(f);
        }
        catch(Exception e)
        {
                writeln(e.msg);
        }
}

Can I use that function or is there a cleaner way to do this job?

Greetings
Fabian