Question

In Perl

print 'a' x 3;  # aaa 

In C#

Console.WriteLine( ??? ) 

Answer 1

It depends what you need… there is new string('a',3) for example.

For working with strings; you could just loop… not very interesting, but it’ll work.

With 3.5, you could use Enumerable.Repeat('a',3), but this gives you a sequence of strings, not a compound string.

If you are going to use this a lot, you could use a bespoke C# 3.0 extension method:

    static void Main()     {         string foo = 'foo';         string bar = foo.Repeat(3);     }     // stuff this bit away in some class library somewhere...     static string Repeat(this string value, int count)     {         if (count < 0) throw new ArgumentOutOfRangeException('count');         if (string.IsNullOrEmpty(value)) return value; // GIGO                     if (count == 0) return '';         StringBuilder sb = new StringBuilder(value.Length * count);         for (int i = 0; i < count; i++)         {             sb.Append(value);         }         return sb.ToString();     }