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[StringExtensions] - Minor optimization for ContainsLetter().

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Ivandro Ismael 2016-08-31 22:10:24 +01:00
parent 294b3f646e
commit ea42ec4184
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1 changed files with 7 additions and 6 deletions
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13
libse/StringExtensions.cs
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@ -153,13 +153,14 @@ namespace Nikse.SubtitleEdit.Core
public static bool ContainsLetter(this string s) public static bool ContainsLetter(this string s)
{ {
if (string.IsNullOrWhiteSpace(s)) if (s != null)
return false;
foreach (var c in s)
{ {
if (char.IsLetter(c)) foreach (var index in StringInfo.ParseCombiningCharacters(s))
return true; {
var uc = CharUnicodeInfo.GetUnicodeCategory(s, index);
if (uc == UnicodeCategory.LowercaseLetter || uc == UnicodeCategory.UppercaseLetter || uc == UnicodeCategory.TitlecaseLetter || uc == UnicodeCategory.ModifierLetter || uc == UnicodeCategory.OtherLetter)
return true;
}
} }
return false; return false;
} }