public static string Chr(int value)
{
if (value < 0 || value > 0xFF)
{
throw Ops.ValueError("{0} is not in required range", value);
}
return(Ops.Char2String((char)value));
}
public static string Unichr(int i)
{
if (i < Char.MinValue || i > Char.MaxValue)
{
throw Ops.ValueError("{0} is not in required range", i);
}
return(Ops.Char2String((char)i));
}
public static object Filter(object function, object list)
{
string str = list as string;
if (str != null)
{
if (function == null)
{
return(str);
}
StringBuilder sb = new StringBuilder();
foreach (char c in str)
{
if (Ops.IsTrue(Ops.Call(function, Ops.Char2String(c))))
{
sb.Append(c);
}
}
return(sb.ToString());
}
else if (IsSubClass(Ops.GetDynamicType(list), Ops.GetDynamicTypeFromType(typeof(string))))
{
StringBuilder sb = new StringBuilder();
IEnumerator e = Ops.GetEnumerator(list);
while (e.MoveNext())
{
object o = e.Current;
object t = (function != null) ? Ops.Call(function, o) : o;
if (!Ops.IsTrue(t))
{
continue;
}
sb.Append(Converter.ConvertToString(o));
}
return(sb.ToString());
}
List ret = new List();
IEnumerator i = Ops.GetEnumerator(list);
while (i.MoveNext())
{
if (function == null)
{
if (Ops.IsTrue(i.Current))
{
ret.AddNoLock(i.Current);
}
}
else
{
if (Ops.IsTrue(Ops.Call(function, i.Current)))
{
ret.AddNoLock(i.Current);
}
}
}
if (IsInstance(list, Ops.GetDynamicTypeFromType(typeof(Tuple))))
{
return(Tuple.Make(ret));
}
else
{
return(ret);
}
}
