Question

When using ReSharper it automatically adds an @, why?

public static string RemoveDiacritics(this string input)
{
    if (string.IsNullOrEmpty(input)) return input;
    var normalizedString = input.Normalize(NormalizationForm.FormD);
    var stringBuilder = new StringBuilder();
    foreach (var value in normalizedString.Select(value => 
        new {value, unicodeCategory = CharUnicodeInfo.GetUnicodeCategory(value)})
            .Where(@t => @t.unicodeCategory != UnicodeCategory.NonSpacingMark)
            .Select(@t => @t.value)) stringBuilder.Append(value);
    return (stringBuilder.ToString().Normalize(NormalizationForm.FormC));
}

Answer 1

The @ symbol allows you to use a reserved keyword for a variable name. Such as @class. I’d assume Resharper does this to be safe.

In this case, it is not needed and it doesn’t have any effect.