StringBuilder capacity()

Question

I noticed that the capacity method returns StringBuilder capacity without a logic way ... sometime its value is equals to the string length other t

Answer 1

EDIT: Apologies - the below is information on .NET's StringBuilder, and is not strictly relevant to the original question.

http://johnnycoder.com/blog/2009/01/05/stringbuilder-required-capacity-algorithm/

StringBuilder allocates space for substrings you might add to it (much like List creates space the array it wraps). If you want the actual length of the string, use StringBuilder.Length.