Greetings:
Simple scenario: background thread is computing data to be displayed in real
time within the main thread.
Data: dynamic/variable data that is converted into a NSString type within a
background thread, displayed within a UILabel (or NSLabel) on the main thread.
My own environment:
Environment: OS X (10.6+)
Greetings:
I've always thought to weak-link delegate methods to their hosts. Hence the
use of 'assign' vs 'retain' delegate assessors.
Quoting Apple's Delegate documentation:
Delegating objects do not (and should not) retain their delegates.
However, clients of
I suspect that to be the case when I received this code for study.
Scenario: MyWindowController:NSWindowController -
MyViewController:NSViewController (a delegate)
Inside 'MyViewController':
- (id)initWithSerial:(NSString *)_serial email:(NSString *)_email
delegate:(NSObject
Greetings:
What would be the best way to emulate a rolodex of cards: each page
(UIViewController) has its own tab that could be dimmed if not selected.
Examples:
1) AquaMinds' Notetaker,
2) Epicurious iPad app that is currently in the iStore.
I'm assuming I would have to customize the
Environment: OS X (10.6.5) iOS4+...
Scenario:
I have a static object (myNumber) that I use to accumulate a value through
multiple iterations from concurrent blocks.
Here's what I have learned:
1) Best way to 'share' variables is via heap vs stack.
Hence, I've created a static object
This isn't 'real code'.
This is merely an attempt to learn GCD concurrency: sharing common data, etc.
The reason for alloc a NSNumber is to work with the heap vs stack.
I'll also be working with C structures as well.
Yes, working with static int mynum is of course, much simpler.
I'll peek at
Thanks for the warning!
Understood.
Ric.
On Nov 15, 2010, at 1:09 PM, Greg Parker wrote:
On Nov 15, 2010, at 1:08 PM, Frederick C. Lee wrote:
I'll peek at OSAtomic.h
I'm in a learning phase, so I'll expect to 'flutter about' before I can fly.
In that case, do not peek at OSAtomic.h
toying with ObjC/C in various scenarios to learn the beast.
Ric.
On Nov 15, 2010, at 1:48 PM, Scott Ribe wrote:
On Nov 15, 2010, at 2:08 PM, Frederick C. Lee wrote:
This isn't 'real code'.
This is merely an attempt to learn GCD concurrency: sharing common data,
etc.
OK.
The reason
, addFoot= 2 TLE name= Frederick C. Lee
... So I'll work with your (B) paradigm: keep the data 'regional' w/in a block.
That way, I can pass the data amongst functions w/in a block and copy
the result to the 'outside' calling ObjC object.
Ric.
On Nov 6, 2010, at 11:24 AM, lwj wrote
Environment: iOS SDK 4.2+
Xcode 3.2.5
Desired design:
1) Multiple NSThreads (via NSOperation?) running NSObjects in parallel:
processing the same C-functions (with different data) in real time till
conclusion (or cancelled).
2) These C-functions are located in a common *.c file (or two);
Greetings:
I would like to be able to have nulled (no-value) for a data type in a
plist.
But I can't create an empty date entity via the Property List Editor.
Question: can I have an empty value for a date, or must I resort to an empty
string?
Ric.
Which is the preferred method of object allocation initialization?
header file.h
@property(nonatomic, release) IRMSerialDetailsDO *serialIDs;
...
body.m
@synthesize mySerialIDDO
...
// 1)
self.serialIDs = [[IRMSerialDetailsDO alloc] init];
or...
// 2)
IRMSerialDetailsDO *mySerialIDDO =
Greetings:
I have a situation where I need to access a member of a mutable array (max
4 members).
Sometimes I could get an out-of-bounds exception, if for example, I try to
access member #3 out of a 2-member array.
It's not serious, I could just ignore it and continue.
Question:
Is it
Greetings:
I wish to preserve the state of an iPhone/iTouch application; which means
that I would like the application to continue deep down within a stock of View
Controllers at a particular view when I return to the application.
Does this mean that I need to preserve the ID of a
Environment: iPhone SDK 3.1+
Greetings:
I wish to design a UITabBarController application where each descendent member
of a particular UITabBarItem has access to its regional iVars, stored within
the UITabBarItem.
Hence we could multiple tabs, each having the SAME hierarchy of member view
I figured it out.Yes. That's how it's done.
Thanks for reply!
Ric.
On Mon, Oct 19, 2009 at 1:17 AM, Alexander Spohr a...@freeport.de wrote:
Frederick,
just an idea - from UIView’s documentation:
tag
The receiver’s tag, an integer that you can use to identify view objects in
your
The Environment:
(1) iPhone SDK 3.2.1
The Setup:
(1) UITableViewCell is defined within its own XIB...
Interface Builder (XIB):
File's Owner: Table View Controller.
(2) UISegmentController's Action Method is defined within the
Table View Controller; along side
1) I've seen an alternative way of defining a method, with the
semicolon after the declaration, before the body:
- (NSArray *)sortedIncredients; -- notice the semicolon
{
...
}
2) ... versus the standard declaration + body of the definition
(without the semicolon):
-
Greetings: I have a customized UIPickerView containing a list of names.
Let’s say I have an array of ten (10) names = {“Alfred”... “Zena”}.
The normal way of showing this list is a singular, static list of an array
from beginning to end.
I would have to return to the beginning vs automatically
I'm trying to replace #define directives with c datatype directives.Example:
(1) #define x 123
versus...
(2) const unsigned x = 123;
I place this at the top of the .h (or .m) file, outside of any class or
method as stand alone.
However, every time I try to use the (2) declaration (within a .h
I suspected such.Thanks to all.
I'm assuming 'const datatype' is better then the compiler directive
'#define', due to the use of the compiler
for more-efficient code. Hence the attempt.
Regards,
Ric.
On Mon, Sep 21, 2009 at 2:00 PM, Jens Alfke j...@mooseyard.com wrote:
On Sep 21, 2009, at
wrote:
On Sep 21, 2009, at 2:15 PM, Frederick C. Lee wrote:
I'm assuming 'const datatype' is better then the compiler directive
'#define', due to the use of the compiler
for more-efficient code. Hence the attempt.
It depends. In C, a const variable of a primitive type like an integer
...@amug.org wrote:
Frederick C. Lee wrote:
I'm assuming 'const datatype' is better then the compiler directive
'#define', due to the use of the compiler
for more-efficient code. Hence the attempt.
Is your code currently bogged down loading #defined literal values? If
not, then why
Environment: iPhone (but Cocoa as well)... I was using the App Delegate
as the link amongst view controllers in sharing data. The 'App Delegate',
being persistent,
was my 'global data' clearing house.
But now I learned that this is frown upon. The preferred way is using
delegation to
= [[UILabel alloc] initWithFrame:centralTitleRect];
I'll try your method to see if I get the same effect.
Thanks.
Ric.
On Wed, Aug 5, 2009 at 3:54 PM, Randall Meadows ra...@not-pc.com wrote:
On Aug 5, 2009, at 1:46 PM, Frederick C. Lee wrote:
Greetings:I need to adjust a UILabel's
Greetings:
The default selection color is blue. I want to use a different color
upon user selection. Here's my code:
(void)tableView:(UITableView *)theTableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [theTableView
I'm trying to dearcive sqlite3-3.6.16-osx-x86.bin.
But what I get is: sqlite3-3.6.16-osx-x86.bin.cpgz
Is there a remedy?
Ric.
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Please do not post admin requests or moderator comments to the
, is not an archive.
Now what??
On Tue, Jul 14, 2009 at 4:13 PM, BJ Homer bjho...@gmail.com wrote:
It's not an archive; that's the actual binary executable. Just rename it
to something more reasonable.
I dealt with this just last week.
-BJ
On Tue, Jul 14, 2009 at 5:06 PM, Frederick C. Lee
amourinet
Ohh!
-rw-r--r--@ 1 Ric Ric 514108 Jul 14 16:45 sqlite3-3.6.16-osx-x86.bin
[/Users/Ric/Downloads/tmp]chmod +x *.bin
[/Users/Ric/Downloads/tmp]ls -l
total 1008
-rwxr-xr-x@ 1 Ric Ric 514108 Jul 14 16:45 sqlite3-3.6.16-osx-x86.bin*
[/Users/Ric/Downloads/tmp]./*.bin
SQLite version 3.6.16
Environment: iPhone OS 3.0
Greetings:
I would like to place one or more reference icons (png) upon a
host image (png) {Like a street map with legends, landmarks, etc.}.
I'm working with Quartz so I'm using pre-loaded CGImages via
UIImage.CGImage, for both the map/layout and the icons.
This is for the iPhone/iTouch environment.
I discovered: CGContextTranslateCTM().
I'll also check out subclassing the scrollview.
Ric.
On Jun 14, 2009, at 7:53 PM, David Duncan wrote:
On Jun 12, 2009, at 11:53 AM, Frederick C. Lee wrote:
Is there a Cocoa/iPhone equivalent to Quartz's
Greetings:
Here's my (common) problem: I want to be able to use Quartz to
draw an open path across an CGImage layout based on the GGImage
coordinates.
I use the UITouch object/click via Simulator to collect my screen
coordinates and hence, to plot a path for Quartz to draw:
Is there a Cocoa/iPhone equivalent to Quartz's
CGImageCreateWithImageInRect(image, imageRect)?
I want to be able to display an off-view portion; or pan over a large
PNG image within
the available UIView.
Ric.
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Greetings:
I'm working within the Cocoa/iPhone environment using SQLite as my
persistent storage means (albeit, MySQL would be adequate as well).
I want to create a digital library that stores images as BLOBs to be
incorporated into an SQLite table.
So I need a simple OS X application
I need to send data through the mail from within my Cocoa program.
This is to be for general release; so it must be stable.
NSMailDelivery appear to be a candidate; unfortunately it's deprecated
in Leopard+.
So what does Apple intend us to use as the replacement?
I've scanned the
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