On Dec 29, 2011, at 9:44 PM, grauenwolf wrote:
> Really I've got two complaints. The first is a simple, "why is
> ObservableCollection(IEnumerable<T>) not implemented?"
Good question. I have no good answer; it wasn't implemented until Nov 24 2011:
https://github.com/mono/mono/commit/a04edc9de8a2bacf30ddfc5b486b8221cf506583
We'll be merging this patch into the Mono for Android branch; it _should_ hit
the next release.
Doubly odd is that "not implemented" members _should_ have [MonoTODO], but that
wasn't visible either.
> More importantly, why is there no warning? This isn't an interface method so
> it shouldn't even be exposed if it isn't implemented.
There are some exceptions to this, but in general I would agree with you.
Historically there's been a lot of variation over what's done with
unimplemented members; usually at minimum they get [MonoTODO], but even that
was skipped here.
> Or at the very least it should be flagged by the compiler so we know not to
> use it.
The only way to flag such things with the compiler is via Obsolete, which
wouldn't be appropriate. I suppose we could hack the C# compiler...but that
would only help those building with mcs, which is _not_ the case for those
using Windows.
- Jon
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