C#

nesfrank wrote:

this is too slow

nesfrank wrote:

best performance

template <class T> 
class is_garbage: public unary_function<char, bool>
{
public:
	bool operator ()(T t) const
	{
		return ( !(isalpha( t ) || isdigit( t )));
	}
};

std::string clean(const std::string& val)
{
	string tmp = val;

   // Clean Up The String
	string::iterator it0= remove_if(tmp.begin(), tmp.end(), is_garbage<char>()); 

	// Assign To Clean String
	string result(tmp.begin(),it0);

	return result;
}

private string CleanString(string dirtyString)
{
    StringBuilder cleanString = new StringBuilder();  // Learn what this does and why to use it
    foreach (char c in dirtyString)
    {
        // Note: C# strings are made up of 2-byte Unicode/UTF-16 characters, not ASCII characters.
        if ((c != '\u0009') || (c != '\u000B') ... etc. )
        {
            // if character is not dirty, add it to the new string
            cleanString.Append(c);
        }
    }
    return (cleanString.ToString());
}

char[] dirtyChars = new char[] { '\u0009', '\u000B', ... etc. };
int dirtyIndex = dirtyString.IndexOfAny(dirtyChars);

SET LANGUAGE Italian
SELECT * FROM NonExistingTable

Msg 208, Level 16, State 1, Line 2
Il nome di oggetto 'NonExistingTable' non è valido.

Dave Kreskowiak wrote:

poke

static void Main(string[] args)
{
	TryWeakDictionary.WeakDictionary<int,> wd =
 new TryWeakDictionary.WeakDictionary<int,>();
	for (int i = 0; i < 100; i++) {
		wd.Add(i, new C { Data = "abc" });
	}
	GC.Collect();
	C v;
	if (wd.TryGetValue(0, out v))
		Console.WriteLine(v.Data);
	Console.WriteLine("End");
	Console.ReadLine();
}

public class WeakReference<t> : WeakReference {
   public WeakReference(T val) : base(val, false) {}
   public new T Target { get { return (T)(base.Target); } }
}</t>