Will cache a collection of string based on a delegate you pass in - Useful when you need to do lots of string concatenation during gameplay

StringCacher.cs

using System;

namespace SlugLib
{
    public class StringCacher
    {
        public delegate string StringConstructor(int index);

        private string[] strings;
        private StringConstructor stringConstructor;


        public int Capacity
        {
            get { return strings.Length; }
        }

        public StringCacher(int capacity, StringConstructor stringConstructor)
        {
            if (capacity <= 0)
            {
                throw new ArgumentOutOfRangeException("Capacity must be greater than zero");
            }

            this.stringConstructor = stringConstructor;
            strings = new string[capacity];

            for (int i = 0; i < strings.Length; i++)
            {
                strings[i] = stringConstructor(i);
            }
        }

        public string Get(int index)
        {
            if (strings != null && index >= 0 && index < Capacity - 1)
            {
                return strings[index];
            }
            else
            {
                return stringConstructor(index);
            }
        }
    }
}