Easiest way to create a string with n times character 'x'?

From: Arnold Peters (apet10_at_hotmail.com)
Date: 01/27/05 

Date: Thu, 27 Jan 2005 20:34:37 +0100

Assume I want to create a string of length n which contains n times the character 'x'.
How do I implement this the easiest way? n could vary from function time to time.

Ok. I could code

char mychar = 'x';
String tmp = "";
for (int i=1; i<n; i++)
    tmp = tmp + String(mychar);
    
But this is very (!) inefficient.

Other solution would be:

String ressource = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
String tmp = ressource.subsctring(0,n);

But this is inefficient too and requires a a priori determination of the maximum possible
length;

As far as I know there is a function similar to

String tmp = makeString('x',n);

but I don't remember the exact name.
Can somehelp give me a hint?

Arni

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