//http://facebooktoolkit.codeplex.com/
//http://facebooktoolkit.codeplex.com/license
using System.Collections.Generic;
using System.Text;
namespace Facebook.Utility
{
/// <summary>
/// Helper functions for string manipulation
/// </summary>
public static class StringHelper
{
/// <summary>
/// Convert a collection of strings to a comma separated list.
/// </summary>
/// <param name="collection">The collection to convert to a comma separated list.</param>
/// <returns>comma separated string.</returns>
public static string ConvertToCommaSeparated<T>(IList<T> collection)
{
// assumed that the average string length is 10 and double the buffer multiplying by 2
// if this does not fit in your case, please change the values
int preAllocation = collection.Count * 10 * 2;
var sb = new StringBuilder(preAllocation);
int i = 0;
bool isString = typeof(T) == typeof(string);
foreach (T key in collection)
{
if (isString)
{
sb.Append('\'');
}
sb.Append(key.ToString());
if (isString)
{
sb.Append('\'');
}
if (i < collection.Count - 1)
sb.Append(",");
i++;
}
return sb.ToString();
}
}
}
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