IsLetter() [2/2]

static bool System.Char.IsLetter ( string s, int index )

inlinestatic

Definition at line 433 of file Char.cs.

    {
        if (s == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.s);
        }
        if ((uint)index >= (uint)s.Length)
        {
            ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument.index);
        }
        char c = s[index];
        if (IsAscii(c))
        {
            return (Latin1CharInfo[c] & 0x60) != 0;
        }
        return CheckLetter(CharUnicodeInfo.GetUnicodeCategoryInternal(s, index));
    }

References System.Char.CheckLetter(), System.Globalization.CharUnicodeInfo.GetUnicodeCategoryInternal(), System.index, System.Char.IsAscii(), System.Char.Latin1CharInfo, System.s, System.ThrowHelper.ThrowArgumentNullException(), and System.ThrowHelper.ThrowArgumentOutOfRangeException().