>>Ok, instead of
>>
>> n = Occurs(....)
>> for I = 1 to n
>> xx = At(...., I)
>> end
>>
>>
>>Consider writing an overload of Occurs which returns a List< int > with all the indexes where there's a match. That way you wouldn't need At() any more
>
>Thanks
Even better with an Enumerator - and ignoreCase if needed
public static class StringMethods
{
public static IEnumerable<int> EnumAt(string searchIn, string searchFor, int startIndex, StringComparison comparison)
{
int offset = startIndex;
while ((offset = searchIn.IndexOf(searchFor, offset, comparison)) != -1)
{
yield return offset;
offset += searchFor.Length;
}
}
}sample
public static class MyClass
{
static string htmlSample = @"
<!DOCTYPE html>
<html lang=""en-GB"">
<head>
<meta charset=""utf-8"">
<title>Example of an inline image</title>
</head>
<body>
<imG src=""balconyview.jpg"">
<Img Src = 'balconyview.jpg' alt='View from my balcony, showing a row of houses, trees and a castle'>
<iMg src='http://example.com/brokenlink/sunset.gif' alt='Beautiful Sunset' />
</body>
</html>
";
public static void Main()
{
foreach (int index in StringMethods.EnumAt(htmlSample, "<img", 0, StringComparison.InvariantCultureIgnoreCase))
{
Console.WriteLine("{0} {1}", index, htmlSample.Substring(index, 4));
}
Console.ReadLine();
}
}
Gregory
