Comments for ObjColumnist

Comment on NSNumber: What is the point ? by Spencer MacDonald

Spencer MacDonald — Tue, 10 Jan 2012 20:25:15 +0000

Hi Robert,

What are you actually trying to achieve by doing this?

You can define a selector like so:

SEL mySelector = @selector(doMagic);

And then use it like:

[object performSelector:mySelector];

But this can get messy very quickly.

Comment on NSNumber: What is the point ? by robert

robert — Mon, 09 Jan 2012 21:35:18 +0000

For a programmer’s calculator, I’d very much like to perform operations on two NSNumbers of a specific type (say double, vs unsigned long long), which can be settable by the user at runtime. So to add, where I ordinarily might write this:

NSNumber *x, *y, *result;
result = [NSNumber numberWithDouble: [x doubleValue] + [y doubleValue]];

I’d like to replace “numberWithDouble” and “doubleValue” with selector variables, which could then be set to @selector(numberWithUnsignedLongLong:) and @selector(unsignedLongLongValue). I’m unable to find any way to do this. Can you help?

Comment on Keeping the Static Analyzer Happy: Prefixed Initializers by Spencer MacDonald

Spencer MacDonald — Tue, 08 Nov 2011 12:46:39 +0000

Agreed you could suffix your category methods, but that is obviously just a matter of style

Comment on Keeping the Static Analyzer Happy: Prefixed Initializers by Oliver

Oliver — Mon, 07 Nov 2011 01:26:01 +0000

Good post. I just want to mention that you could work around this by suffixing your category methods instead of prefixing them. This also improves the auto completion…
+1

Comment on Keeping the Static Analyzer Happy: Prefixed Initializers by cmk

cmk — Thu, 03 Nov 2011 10:55:13 +0000

Good post. I just want to mention that you could work around this by suffixing your category methods instead of prefixing them. This also improves the auto completion…

Comment on Steve Jobs 1955-2011 by getarticle pro

getarticle pro — Sun, 09 Oct 2011 03:47:56 +0000

A good reminder to many of us that our day will come too and then we will ask what did we do during our lifetime, why we are here and what are we supposed to do.

Comment on Steve Jobs 1955-2011 by Carolann Small

Carolann Small — Sat, 08 Oct 2011 11:53:40 +0000

I suspect that Steve Jobs represented different things to different people. I am not of the newer technologically savvy generation so I cannot begin to understand or judge the minds of others with respect to what Mr. Jobs represented to others perhaps for some he was a symbol of living life in the face of a terminal cancer diagnosis (keeping with the half full theme). On the other hand, I AM of the generation that knew, appreciated, and revered Mr. Shuttlesworth. I disagree with Brian’s assessment of the Washington Post’s coverage although below the fold, the Shuttlesworth obit was much more prominent on the front page than that of Mr. Jobs. In fact the single column on the front page regarding Mr. Jobs has a headline referring to his vision rather than his life. Maybe it is his vision that resonates with those who grieve his passing. Or maybe those people don’t have any idea why they are grieving a stranger; maybe it is simply the tolling of the bell that attracts them.

Comment on Steve Jobs 1955-2011 by Orville Calger

Orville Calger — Thu, 06 Oct 2011 22:57:42 +0000

Steve Jobs RIP. This is a video for you: Steve Jobs RIP

Comment on Steve Jobs 1955-2011 by Spencer MacDonald

Spencer MacDonald — Thu, 06 Oct 2011 20:50:07 +0000

100% agree with you, he was a true visionary.

Comment on Steve Jobs 1955-2011 by Alessandro Dal Grande

Alessandro Dal Grande — Thu, 06 Oct 2011 20:44:51 +0000

Yes, but his vision was completely new, that is. The way it worked, what you could do with a device. That was completely unimaginable before.