Comments for Programming for iOS

Comment on Extension: Advanced Tables by Christopher

Christopher — Sat, 26 May 2012 20:21:07 +0000

Great tutorial–new(ish) iOS developer. Looking forward to the persistence version of this. Thank you!

Having only just discovered your site, I’m digging in for more. Thanks again!

Comment on Extension 4: What goes Inside the if() Statement by inspire48

inspire48 — Sat, 24 Mar 2012 23:13:29 +0000

Make sure your import line is correct:

#import

If you’re still getting the issue, try this StackOverflow link:
http://stackoverflow.com/questions/4976351/nslog-error-cant-find-nxconstantstring

Comment on Extension 4: What goes Inside the if() Statement by Connor

Connor — Sat, 24 Mar 2012 21:21:51 +0000

GNUstep compiler still says “cannot find interface declaration for NXContantString “

Comment on Extension 4: What goes Inside the if() Statement by inspire48

inspire48 — Sat, 24 Mar 2012 18:17:06 +0000

The issue is with the block of if() statements you have at the bottom. You have to declare x, just like you did with result, a, and b. For example:

int x = 6;
if (x > 5)
NSLog(@”x is greater than 5.”);
else if (x < 5)
NSLog(@"x is less than 5.");
else
NSLog(@"x is equal to 5.");

Comment on Extension 4: What goes Inside the if() Statement by Connor

Connor — Sat, 24 Mar 2012 16:30:21 +0000

GNUstep shell says error expected identifier of ‘(‘ before ‘{‘ token.
X is undeclared
Cannot find interface declaration for NXConstantString.
What is the problem.

#import
int main(int argc, const char *argv[]){
int result;
result = 45 * 89;
printf(“Hello World, Hello World!\n Hello\nThe product of 45 and 89 is %i”,result);
result = 14 – 2 * 3 + 4 * 5;
printf(“\n The answer to 14 – 2 * 3 + 4 *5 is %i”, result);
int a = 45;
int b = 2;
result = a * b;
printf(“\n The answer to a * b, if a = 45 and b = 2 is %i”, result);

if (x > 5)
NSLog(@”x is greater than 5.”);
else if (x < 5)
NSLog(@"x is less than 5.");
else
NSLog(@"x is equal to 5.");

return 0;
}

Comment on Objective-C Lesson 1: Hello World! by inspire48

inspire48 — Sun, 18 Mar 2012 22:49:36 +0000

What Xcode template did you use? In Xcode 4.1, you should be under Mac OS X > Application > Command Line Tool. Make sure you're putting the code in main(). What are some of the errors you're getting?

Comment on Objective-C Lesson 1: Hello World! by toon

toon — Sun, 18 Mar 2012 19:43:31 +0000

When I repeat the steps described, and build and run the code, I get 20 errors… I use Xcode 4.1. What can be wrong? My NSAutoreleasePool is also just black, not purple-colored.

Also, good job on the website! Hope it will get me started working with Xcode!

Comment on Learn Objective-C in 24 Days by adarshatwar

adarshatwar — Fri, 09 Mar 2012 16:11:36 +0000

Reblogged this on Comfortably numb and commented: I'm trying to pickup iOS programming a bit more seriously than my previous half-hearted attempts. While searching for good, step by step tutorials/guides to approach the subject, I stumbled upon this blog which seemed approachable. So this reblog is a bookmark of sorts, linking the index to the series of 46 'lessons'.

Comment on About Me by adarshatwar

adarshatwar — Fri, 09 Mar 2012 11:22:24 +0000

Thanks a ton!

I should have searched a bit more I guess…

Thanks,
Adarsh

Comment on About Me by inspire48

inspire48 — Fri, 09 Mar 2012 11:13:33 +0000

Here you go:
http://cupsofcocoa.com/2010/08/29/learn-objective-c-in-24-days/