public virtual void Assign(ExprBase <ResultType> expr)
{
if (this != expr)
{
Str = expr.Str;
Context = expr.Context;
IsCompiled = expr.IsCompiled;
}
}
public ExprBase(ExprBase <ResultType> other)
{
Context = other.Context;
Str = other.Str;
IsCompiled = other.IsCompiled;
}