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How to Toggle String Case in .Net

, 11 Feb 2011 CPOL 1.6K 3
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Interesting finding in regards to the Case Toggle Algorithm by Robert (see the following code snippet): protected string ToggleCaseByRobert(string s){ var sb = new StringBuilder(s.Length); foreach (char c in s) sb.Append(char.IsUpper(c) ? char.ToLower(c) :...
Interesting finding in regards to the Case Toggle Algorithm by Robert (see the following code snippet):
protected string ToggleCaseByRobert(string s)
{
    var sb = new StringBuilder(s.Length);
    foreach (char c in s)
        sb.Append(char.IsUpper(c) ? char.ToLower(c) : char.ToUpper(c));
    return sb.ToString();
}

The functionality will stay the same if the line:
var sb = new StringBuilder(s.Length);
is replaced with simplified version:
var sb = new StringBuilder();
but the original version demonstrates about 5...10% performance boost. Kudos to Robert Rohde for this useful tip!

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DrABELL
President Infosoft International Inc
United States United States
Dr. A. Bell has 20+ years of Software and Electrical Engineering experience: Win/Web veteran, published 300+ articles and authored 37 inventions, credited for 10+ Enterprise level projects (>250k code lines); currently focused on .NET/WPF/C#, Javascript/jQuery, 'Big Data', AI, IoT and Mobile apps. Participated in App Innovation Contest (AIC 2102/2013) with several winning submissions. Sample projects/pubs follow:
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