On Mar 12, 2009, at 21:05, Graham Cox wrote:
One of my classes can sometimes fail in -initWithCoder: - it relies
on certain resources being available and if it doesn't get them, I
thought I could follow the same pattern as -init and autorelease
self and return nil. When I do this though I
Hi,
Actually i searched for this and i got lots of posting about MySql
but these are very old. i followed some posting also.
Like i found http://mysql-cocoa.sourceforge.net/downloads.html;
and we can use this mySql Api for our application.
I downloaded this api and
Hi all,
I am doing a bit of prototype testing and have coded a small iPhone app that
browses Bonjour services.
On the interface I have currently just added a UIPickerView which dynamically
at runtime gets items added to it as and when my NSNetServiceBrowser finds
services.
When the browser
It seems your situation is similar to this:
http://lists.apple.com/archives/macnetworkprog/2007/Aug/msg00017.html
I just tested, and a normal (non-daemon) Cocoa app _does_ receive the
power-off event. It sounds like daemons in particular have an issue
receiving it.
It appears that IOKit has
Try:
NSDictionary *frontAppInfo = [[NSWorkspace sharedWorkspace] activeApplication];
NSString *pathToActiveApp = [frontAppInfo objectForKey: @NSApplicationPath];
NSLog(@%@, pathToActiveApp);
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I'm attempting to use NSManagedObject validateForDelete in order to
provide timely feedback to delete actions by users. But the
relationship delete rules don't seem to be getting applied as I would
expect.
As a toy example I created a simple CoreData app with two entities,
Department and
On Mar 12, 2009, at 8:39 AM, Bill Bumgarner wrote:
On Mar 12, 2009, at 6:04 AM, John Engelhart wrote:
[ way too many words deleted ... please try to succinctly
state issues in the future ]
You have created a micro benchmark that demonstrates a significant
bit of overhead
Just got recently into that pit myself.
Read the docs _very_ carefully for this one. (And file a complaint at
the bottom of the doc’s page)
dictionaryFromTXTRecordData:
Return Value
A dictionary representing txtData. The dictionary’s keys are
NSStringobjects using UTF8 encoding. The
Corbin,
Please take a look at the bug with ID 6677201 and also feel free to check out
the email I sent you yesterday. Stay in touch.
Meanwhile, I rather like Chris' approach because it works :)
Thanks,
U
From: corb...@apple.com
Date: Thu, 12 Mar
On Mar 12, 2009, at 10:54 AM, Bill Bumgarner wrote:
On Mar 12, 2009, at 10:29 AM, John Engelhart wrote:
Actually, this isn't a micro-benchmark.
If you aren't displaying the results, responding to user events,
keeping an application state up to date and otherwise doing all of
the things
I'm attempting to use NSManagedObject validateForDelete in order to
provide timely feedback to delete actions by users. But the
relationship delete rules don't seem to be getting applied as I would
expect.
-validateForDelete: is intended as a potential delegate hook for
subclasses of
Bill said something in passing on this issue which I think is important. To
paraphrase: If you care about performance, don't use the Cocoa RegEx stuff
to parse large amounts of data. I think this observation is true whether
you use GC or not. GC just makes it worse. I'd like to see a pure-C
Hi,
I've been looking into creating a singleton class to manage some
objects that I have that I'd like to be globally available. I've been
reading through
http://www.cocoadev.com/index.pl?SingletonDesignPattern and all looks
well except I now have the following question ...
I'd like my singleton
Hi list's readers,
I'm encountering a weird issue by using a masked, animated, z-positionned
layer within an animated context: the layer's animation does run only when
the context's animation does.
The thing is when I deactivate the layer's mask, it works; when I delete the
z-position setting of
By definition, if it's a singleton, it will exist for the lifetime of
the program; there is no risk of the notification centre sending
messages to a now non-existent object.
On 13 Mar 2009, at 10:31, Mic Pringle wrote:
Hi,
I've been looking into creating a singleton class to manage some
But I thought that it was best practice to remove yourself from the
notification center before terminating your application, as doesn't
the notification center live in the objective-c runtime and therefore
is always active, regardless of whether your application is or isn't ?
-Mic
2009/3/13 Mike
I'm pretty sure the run-time will sort that all out for you.
But I'm a bit confused here - if you're getting an
applicationDidTerminate notification, why not just remove them there
anyway?
Sandy
On Mar 13, 2009, at 12:54 PM, Mic Pringle wrote:
But I thought that it was best practice to
The Oobj runtime is a C library loaded by each ObjC application, it's
not an autonome entity that lives beyond your application termination.
Le 13 mars 09 à 11:54, Mic Pringle a écrit :
But I thought that it was best practice to remove yourself from the
notification center before terminating
Because it's the applicationDidTerminate notification from
NSWorkspace, informing me about other applications closing, not my
own.
-Mic
2009/3/13 Sandy McGuffog mcguff...@gmail.com:
I'm pretty sure the run-time will sort that all out for you.
But I'm a bit confused here - if you're getting an
I have a simple setup below, but I can't see my text layer, what am I
missing?
(also are all of the commented lines nessecary?)
view= [[[NSApplication sharedApplication] keyWindow] contentView];
rootLayer = [CALayer layer];
[rootLayer setBounds:
Actually, I am converting it to NSData, and then adding it, and it
still returns nil
Joe
On Mar 13, 2009, at 3:27 AM, Alexander Spohr wrote:
Just got recently into that pit myself.
Read the docs _very_ carefully for this one. (And file a complaint
at the bottom of the doc’s page)
On Fri, Mar 13, 2009 at 8:12 AM, Joe Turner joetur...@me.com wrote:
Actually, I am converting it to NSData, and then adding it, and it still
returns nil
Post code.
Mike
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On Fri, Mar 13, 2009 at 8:01 AM, vinai for_use...@yahoo.com wrote:
Hi All,
Thanks for your feedback. I AM coming from a non-Cocoa background, and I was
hoping to keep some picture of how the GUI was interacting with my code at a
fairly low level.
Crawl before you walk, walk before you
Joe,
That's a lot of data to be storing in the TXT record. I'd advise that
you store it in the NULL record as iChat does for 'Bonjour' chat.
Keith
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Please do not post admin requests or
Here:
NSImage *original = [NSImage imageNamed:NSImageNameComputer];
[original setSize:NSMakeSize(10.0f, 10.0f)];
NSData *image = [original TIFFRepresentation];
NSBitmapImageRep *imageRep = [NSBitmapImageRep
imageRepWithData:image];
NSData *finalData =
I had a very similar situation using a singleton and found that I
needed to remove it from the notification centre before the app died -
or landed up with an odd side effect (main menu items in xCode would
no longer respond to the mouse ).
I fixed it by getting the app delegate to respond
Hi,
I'm belatedly dipping my toes into NSPredicate to do some array
filtering. I have an array of objects which have (among other things)
a boolean property. In my UI, I have three tables:
1) The first table has all the entries in the array.
2) The second table uses an NSPredicate to
Similarly, couldn't you have the singleton itself register to receive
the applicationWillTerminate notification? I don't think it has to be
done via the app's delegate.
Something like:
(in your singleton's accessor, or perhaps a private initializer?)
[[NSNotificationCenter defaultCenter]
Yep. This looks like the best solution. Will give this a go.
Thanks
-Mic
2009/3/13 Dave DeLong davedel...@me.com:
Similarly, couldn't you have the singleton itself register to receive the
applicationWillTerminate notification? I don't think it has to be done via
the app's delegate.
Writing your GUI in code is a useful and educational exercise. But it
will only be useful and educational if you do it *after* you are
already proficient with the standard way of doing things. Get good
with the basics (which means using nibs), and once you're comfortable
with that, you'll be
for others reading this on the archives, I found the problem, I need
to set the bounds (or frame) for titleLayer.
On 13 Mar 2009, at 12:09, Memo Akten wrote:
I have a simple setup below, but I can't see my text layer, what am
I missing?
(also are all of the commented lines nessecary?)
I think in order for this to work you have to makesure you have a
key/value compliant getter setter for the boolean value and then in
the code you have to use
[someObject setValue: ForKey:];
This will then notify any observers (i.e your array controller) that
the value has changed and update it
Just trying to figure out what the best APIs are to use for some
pretty simple file operations. I've found NSFileHandle, NSFileManager,
or I could use low-level C-apis or a combination of the two.
What I want to do is create and write binary files (and I guess read
them again later). I'd
On 14/03/2009, at 12:44 AM, Roland King wrote:
I was trying to find an API which gives me the correct path for
temporary files, or even a temporary filename, but haven't found one.
NSTemporaryDirectory
Am I looking at the right APIs and thinking about this the right
way, or are
On Fri, Mar 13, 2009 at 8:45 AM, Joe Turner joetur...@me.com wrote:
Here:
NSImage *original = [NSImage imageNamed:NSImageNameComputer];
[original setSize:NSMakeSize(10.0f, 10.0f)];
NSData *image = [original TIFFRepresentation];
NSBitmapImageRep
On 12 Mar 2009, at 17:07, Corbin Dunn wrote:
On Mar 12, 2009, at 3:51 AM, jonat...@mugginsoft.com wrote:
The recommended way to override the text color in an NSTableView
NSTextFieldCell is detailed here:
http://www.cocoabuilder.com/archive/message/cocoa/2008/11/5/222008.
However, there
On Mar 13, 2009, at 12:05 AM, Graham Cox wrote:
Minor problem, I think, but I'd like to get some advice about the
right way to approach this.
One of my classes can sometimes fail in -initWithCoder: - it relies
on certain resources being available and if it doesn't get them, I
thought I
SMySQL_bundled.framework is list on that page (
http://mysql-cocoa.sourceforge.net/downloads.html ) under Binary files.
it's grayed out and listed as deprecated but still available for download.
I linked it into a fresh project and it complied successfully.
hope that helps
+Clint
On Fri, Mar
Hi,
This sounds like a framework bug. Please file a bug report so we can
make sure it gets fixed (if possible including a test case showing the
issue). thanks,
John
On Mar 13, 2009, at 3:49 AM, Paul Arthur Henrion wrote:
Hi list's readers,
I'm encountering a weird issue by
I'm putting together some code that will write an icon file (obtained
via NSWorkspace) to a gif.
I had prototyped the code with a simple command-line tool with
hard-coded values for file sources, destinations, and image sizes.
However, when I try to abstract the code, I am now getting weird
On Mar 13, 2009, at 2:28 AM, Paul Sanders wrote:
Having said all of which, I think the original test is not unfair
and I
agree with a lot of the points people have made in support of that
view.
It's always painful to have to step outside the Cocoa frameworks,
and (off
topic) it seems that
On Mar 13, 2009, at 7:57 AM, Kevin Walzer wrote:
I'm putting together some code that will write an icon file
(obtained via NSWorkspace) to a gif.
I had prototyped the code with a simple command-line tool with hard-
coded values for file sources, destinations, and image sizes.
However,
Hi,
I am drawing controls into view to use as feedback during Drag Drop
operation.
I've tried to draw manually a NSButton (with NSRoundedBezelStyle)
using [[button cell] drawWithFrame:frame inView:[NSView focusView]];
I obtain a button image with the correct background, but the button
Hello everybody
Bindings problem:
I have an NSArrayController subclass and an NSPopUpButton subclass.
I am trying to bind the NSPopUpButton's selected object to the
selection of my array controller.
I have to do this manually for reasons I won't get into here.
But when I do this (self is
The most complex change is the move from -dealloc to
-finalize. Finalizers are executed in an effectively
random order whereas many people seem to want deallocs to
be executed in a fixed, dependent, order.
In reality, incurring order dependencies on -dealloc is a really bad
idea; one
On Mar 13, 2009, at 9:42 AM, Ivy Feraco wrote:
Hello everybody
Bindings problem:
I have an NSArrayController subclass and an NSPopUpButton subclass.
I am trying to bind the NSPopUpButton's selected object to the
selection of my array controller.
I have to do this manually for reasons I
Please do log bugs when you run into these issues.
I did back in August 2005: rdar://problem/4226145. It's still open but
I haven't seen it recently so it might have been fixed in Leopard.
Thanks! I had looked at your bug quite a few times (I promptly replied
replies to the bug logged back
A quick side note on this problem (which I have confirmed is a bug):
- (void)tableView:(NSTableView *)aTableView willDisplayCell:(id)
aCell forTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)
rowIndex
{
// note that when the NSTableView Highlight mode is set to source
list
On Fri, Mar 13, 2009 at 12:04 PM, Paul Sanders p.sand...@dsl.pipex.com wrote:
(Off topic again): Call me old-fashioned, but I don't like autorelease pools
all that much. I believe Cocoa could have gotten along just fine without
them, had they never been invented. I prefer C++-style 'smart
#define autoscoped __attribute__((cleanup(releaseObject)))
static inline
void releaseObject(id *object) {
[*object release];
}
- (void) demo {
autoscoped NSArray *myArray = [[NSArray alloc] init];
//do some stuff
}
The autoscoped macro tags the lval with an attribute that causes
A followup on this particular problem that Jonathan reported for
people to reference:
On Mar 12, 2009, at 3:51 AM, jonat...@mugginsoft.com wrote:
NSTableViewSelectionHighlightStyleSourceList.
The source list style attempts to add auto-formatting to the cell by
setting the attributed
On Fri, Mar 13, 2009 at 1:30 PM, Paul Sanders p.sand...@dsl.pipex.com wrote:
That's very interesting, I didn't know that attribute existed. I imagine
that post-dates autorelease pools by some years.
It's a relatively new GCC-ism.
But most objects returned
by framework functions are
On Fri, Mar 13, 2009 at 1:34 PM, Corbin Dunn corb...@apple.com wrote:
Either solution is perfectly acceptable, and we'll increase our
documentation to help developers understand the process of displaying cells.
How about instead of changing the object value to an attributed string
the framework
On Mar 13, 2009, at 10:43 AM, Kyle Sluder wrote:
On Fri, Mar 13, 2009 at 1:34 PM, Corbin Dunn corb...@apple.com
wrote:
Either solution is perfectly acceptable, and we'll increase our
documentation to help developers understand the process of
displaying cells.
How about instead of
Without any sort of management, you'd leak memory like
crazy in situations where neither the caller or the callee can release
the object.
A scheme where it is always the caller's job to release any object returned
to it is perfectly viable, as any number of other computing platforms (such
as
On Fri, Mar 13, 2009 at 3:51 AM, Mike Abdullah
cocoa...@mikeabdullah.net wrote:
By definition, if it's a singleton, it will exist for the lifetime of the
program; there is no risk of the notification centre sending messages to a
now non-existent object.
As a smallish nit... singleton nominally
On Mar 13, 2009, at 9:42 AM, Ivy Feraco wrote:
I have an NSArrayController subclass and an NSPopUpButton subclass.
I am trying to bind the NSPopUpButton's selected object to the
selection of my array controller.
I have to do this manually for reasons I won't get into here.
But when I do this
Yes thanks
I did something like this.
I realize now that selection is just a getter method on
NSObjectController
so no sense binding to it without a keypath.
Ivy Feraco
UI Developer
i...@boxstudios.com
On Mar 13, 2009, at 2:34 PM, Stuart Malin wrote:
On Mar 13, 2009, at 9:42 AM, Ivy
That's what I thought too. But how do you use the NULL record?
Joe
On Mar 13, 2009, at 7:36 AM, Keith Duncan wrote:
Joe,
That's a lot of data to be storing in the TXT record. I'd advise
that you store it in the NULL record as iChat does for 'Bonjour' chat.
Keith
On 3/13/09 3:05 PM, Graham Cox said:
One of my classes can sometimes fail in -initWithCoder: - it relies on
certain resources being available and if it doesn't get them, I
thought I could follow the same pattern as -init and autorelease self
and return nil.
Actually, I don't think that's the
On 2009 Mar 13, at 01:44, Ben Trumbull wrote:
-validateForDelete: is ... not intended to double as -canDelete or -
isDeleteable.
When I first started using Core Data I had the mistaken impression
that the various -[NSManagedObject validate] methods were hooks
into which I could place
When we put PNG resources in our iPhone apps, what color space are
they displayed under?
I know PNGs are re-processed by Xcode (into illegal, but more-
efficient, iPhone PNGs), are the color profiles embedded in PNGs used
either at the re-processing time or at the time of drawing?
As far
On Mar 13, 2009, at 3:14 PM, David Blanton wrote:
Is it true that reloadData is synchronous while setDataSource (which
makes a reload happen) is asynchronous ?
What class are you referring to?
NSTableView?
All are synchronous, none are asynchronous. Tiling/redrawing is all
lazily done.
Hi all,
I'm trying to make a cheap, modal, indeterminate progress dialog, but
I'm having trouble animating the progress bar.
(Yes, I know this is only slightly better than the spinning wheel of
death. Yes, I know I should thread my long running code. Yes, I know I
should not block the main
No, none at all. The main AppKit thread is the thread that will be
repainting your progress bar. If it's blocked, it can't paint the new
state of your progress bar.
Rob
On Mar 13, 2009, at 3:20 PM, Sean McBride wrote:
Hi all,
I'm trying to make a cheap, modal, indeterminate progress
Rob,
Thanks for your reply. But what you say can't be so. As I said,
sometimes my 'hint' is accepted and the progress bar animates, and I am
definitely blocking the main thread with my own code at the same time.
But it only works sometimes, and I'm looking to make it work all the
time. But the
Your question was if there was a reliable way of doing it, and as you
have experienced, that's the best you can hope to achieve without
using a separate thread.
Rob
On Mar 13, 2009, at 3:29 PM, Sean McBride wrote:
Rob,
Thanks for your reply. But what you say can't be so. As I said,
Sean,
AppKit is using -[NSApplication updateWindows] for some of animation
thread synchronization tasks.
If you experience animation not properly starting up with blocking
operations, you can kick start the animation by calling the method
before going into the operation.
Aki
Rob,
I've working on a background helper, created Xcode as a Foundation
tool. It can open, edit and save Core Data NSPersistentDocuments
created by my main app. It seems to work.
I know from the Core Data Utility Tutorial (formerly called Low
Level) that Core Data without NSApp is OK. What
On Thu, Mar 12, 2009 at 3:17 PM, Peter Ammon pam...@apple.com wrote:
Hi John,
Instead of storing each string individually into the heap, try batching up,
say, 1k or so into a stack allocated buffer. Then use
objc_memmove_collectable() to move them in bulk into the heap at the point
your
I have downloaded the Cocoa example which uses Scripting Bridge to
send emails. I wanted to know is it possible to use that system to
send rich text emails. That is, is there a way to get the Mail App to
recognize AttributedString instead of just plain string.
Thanks in advance
Reza
To everyone that has read this post - I am a stupid programmer and there is no
caching.
I wasn't changing my service object with the new name!
Useless - my apologies!!
Eggsy
_
All your Twitter and other social updates in one
On Wed, Mar 11, 2009 at 9:33 AM, Scott Ribe scott_r...@killerbytes.com wrote:
Does your setImage method retain the image?
The object ExternalView is a NSImageView so the setImage is the one of
NSImageView.
The doc says nothing about it, but i added some debug log like this :
On Mar 13, 2009, at 4:47 PM, John Engelhart wrote:
On Thu, Mar 12, 2009 at 3:17 PM, Peter Ammon pam...@apple.com wrote:
Hi John,
Instead of storing each string individually into the heap, try
batching up,
say, 1k or so into a stack allocated buffer. Then use
objc_memmove_collectable()
Joe,
You'll need to drop below NSNetService and CFNetService to manipulate
the NULL record data. Take a look at the API in dns_sd.h for the
functions you need. Like a TXT record, a NULL record has a limit of
65535 bytes but unlike the TXT record it isn't segmented.
Here's some sample
On Fri, Mar 13, 2009 at 5:28 AM, Paul Sanders p.sand...@dsl.pipex.com wrote:
Bill said something in passing on this issue which I think is important. To
paraphrase: If you care about performance, don't use the Cocoa RegEx stuff
to parse large amounts of data.
I disagree :), and I have numbers
On Mar 13, 2009, at 15:34, Darren Minifie wrote:
=== Interface file: ===
@interface PerceptionController : NSWindowController {
NSMutableArray* dpcm2;
}
@property(nonatomic, retain) NSMutableArray* dpcm2;
-(void)insertObject:(id)num inDpcm2AtIndex:(unsigned)index;
Exploring the example of sending emails using Scripting Bridge, I see
that objects are allocated but not released:
MailOutgoingMessage *emailMessage = [[[mail
classForScriptingClass:@outgoing message] alloc] initWithProperties:
[NSDictionary
On Fri, Mar 13, 2009 at 9:00 PM, Quincey Morris
quinceymor...@earthlink.net wrote:
The problem here is that your table column must be bound to a property of
the class of the objects in the array. (That is, you specified
'arrangedObjects' for the controller key path of the column binding, but
On Mar 13, 2009, at 18:00, Quincey Morris wrote:
When you edit a specific row of your table column, the value you
type in is set as the new value of the corresponding MySomething
object.
Oops, that should read:
... as the new value of the corresponding MySomething object property.
Hi All,
I'm developing a setuid tool for my application and seems that NSTask
doesn't respect the setuid bit and the effective uid remains 501.
However when launching the tool from the terminal the effective uid is
0 as expected.
What am i missing?
Mudi
On Mar 13, 2009, at 18:20, Kyle Sluder wrote:
On Fri, Mar 13, 2009 at 9:00 PM, Quincey Morris
quinceymor...@earthlink.net wrote:
The problem here is that your table column must be bound to a
property of
the class of the objects in the array. (That is, you specified
'arrangedObjects' for the
On Fri, Mar 13, 2009 at 9:36 PM, Quincey Morris
quinceymor...@earthlink.net wrote:
Or am I missing your point?
No, you're not. I always bind it explicitly because I know I'll
forget if my column bindings aren't all bound to keypaths off the same
controller property. It's also not documented
thank you guys so much! That makes perfect sense (now), and I'm glad I only
wasted most of the day. I do think that programming guide on bindings could
be improved or elaborated on a little bit. Kyle what do you mean by binding
the table view's content property? I understand what you mean, but
On Fri, Mar 13, 2009 at 4:38 AM, Marcel Weiher marcel.wei...@gmail.com wrote:
On Mar 12, 2009, at 10:54 AM, Bill Bumgarner wrote:
In the context of an application, such processing is likely to be on a
secondary thread and there is likely to be synchronization of data between
threads.
The
We have a lot of code in libraries in Applescript. Now starting to
look at using Cocoa to move forward, as we are really using
Applescript to pretty much its limit.
But it is not a short term solution to rewrite all our Applescript
libraries in Objective-C. We need to be able to use
On Fri, Mar 13, 2009 at 10:04 PM, Darren Minifie minof...@gmail.com wrote:
Kyle what do you mean by binding
the table view's content property? I understand what you mean, but I'm
unsure of what I should bind it to. The array controller's array? or the
tableView's dataSource?
Well I assume
On Fri, Mar 13, 2009 at 8:26 PM, Peter Ammon pam...@apple.com wrote:
On Mar 13, 2009, at 4:47 PM, John Engelhart wrote:
On Thu, Mar 12, 2009 at 3:17 PM, Peter Ammon pam...@apple.com wrote:
Hi John,
Instead of storing each string individually into the heap, try batching
up,
say, 1k or so
It turned out that I set the setuid bit on different file from the one
I launched with NSTask.
This took me about 3 hours to realize, sorry :)
On Mar 14, 2009, at 2:24 AM, Mudi Dandan wrote:
Hi All,
I'm developing a setuid tool for my application and seems that
NSTask doesn't respect
Oh ok I understand. Thanks!
I have one last question about this stuff. In the attributes panel for an
array controller, there is a field called Object Controller Class Name. The
tool tip says to set this to the class that will serve to add new objects
to the controller's managed array.
On Mar 13, 2009, at 7:59 PM, John Engelhart wrote:
On Fri, Mar 13, 2009 at 8:26 PM, Peter Ammon pam...@apple.com wrote:
http://c-faq.com/malloc/alloca.html for a rough idea why)
The goal is for the compiler to not use individual write barriers
at all,
and it won't for stack allocated
On Fri, Mar 13, 2009 at 2:03 PM, Paul Sanders p.sand...@dsl.pipex.com wrote:
Without any sort of management, you'd leak memory like
crazy in situations where neither the caller or the callee can release
the object.
A scheme where it is always the caller's job to release any object returned
The Objective-C 2.0 Programming Language documentation indicates that
a type declaration for an object including a formal protocol should
look something like this.
id Protocol anObject;
I have been studying some sample code that does it like this.
NSObject Protocol *anObject;
What
well the first one just says that anObject supports the protocol and
it tells you NOTHING else about it at all. So the only methods you can
call on it without having the compiler warn you that they may not
exist (and they may not exist) are Protocol methods.
Seems fine until you actually
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