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Re: Cocoa Books


On 18/04/2006, at 00:27, Phil Faber wrote:

- Opening a text file and reading from it 

If your text file is plain ASCII or UTF-16:
[NSString stringWithContentsOfFile:@"/path/to/file"]

If you use some other encoding, you must read the file with the correct encoding. First get the file data:

	NSData *data = [NSData dataWithContentsOfFile:@"/path/to/file"];

Then create a string from the data using the correct encoding. For UTF-8 you can use:

	NSString *string = [NSString stringWithUTF8String:[data bytes]];

For other encodings, e.g. ISO-8859-1:

NSString *string = [[NSString alloc] initWithData:data encoding: NSISOLatin1StringEncoding];
[string autorelease];


- Displaying some text 

Where? GUI? terminal?

- Asking the user and questions and getting the answer 

How do you want to interact with the user?

- Sorting a small batch of numbers 

Put the numbers in an NSArray and sort it.

NSArray *numbers = [NSArray arrayWithObjects:
	[NSNumber numberWithInt:2],
	[NSNumber numberWithInt:3],
	[NSNumber numberWithInt:1],
    	nil];

[numbers sortedArrayUsingSelector:@selector(compare:)];


- Joining two strings together 

[@"foo" stringByAppendingString:@"bar"]


I recommend to start with this great book:
http://www.bignerdranch.com/products/cocoa1.shtml


Best Regards,

Nir Soffer

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References: 
 >Cocoa Books (From: Jonathan <email@hidden>)
 >Re: Cocoa Books (From: Phil Faber <email@hidden>)



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