Hi,
> > On May 1, 2008, at 10:02 AM, Johannes Luber wrote:
> >
> >> Hi!
> >>
> >> I've noticed following new addition to the Token class:
> >>
> >> public static final Set legalOptions =
> >> new HashSet() {
> >> {
> >> add(defaultOption);
> >> }
> >> };
> >>
> >> Can someone explain me, what that code snippet actually does? It
> >> looks like that a new HashSet is created and that the variable
> >> defaultOption is added, but that's a guess as I have never
> seen such
> >> syntax before. Am I right?
> >>
> >
> > The {...} is a ctor for the unnamed anon inner class. weird, eh?
> >
> > Ter
> >
>
> And what for do you intend to use this inner class for? C#
> doesn't have a direct equivalent.
>
> Johannes
This translates to something like:
... class Token
{
...
static readonly IDictionary<string,string> legalOptions;
...
static Token()
{
legalOptions = new Dictionary<string,string>();
legalOptions.Add(defaultOption, defaultOption);
}
...
}
Notes:
1. C# has no built-in Set type so you may use a list or dictionary etc. I
prefer a dictionary as it is faster to search (for set membership tests).
Just use same value for key and value.
2. The static ctor simulates the actions of the anonymous inner class
3. If you prefer, you may build a set type for C# (or reuse one from a
BSD-compatible library)
Micheal
-----------------------
The best way to contact me is via the list/forum. My time is very limited.
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