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dogzilla · Jun 8, 2001, 03:54 PM

I'm running into some problems dealing with some basic issues. For example, I want to convert an integer to a string. Another example - random numbers. The regular C syntax doesn't seem to work, and I'm not finding answers in the docs.

I'm not really looking for answers to these specific questions, but rather suggestions on where/how to find the answers myself.

Thanks in advance,

starfleetX · Jun 9, 2001, 04:25 AM

For tutorials, source code, and other info, try:
StepWise
and
Cocoa Dev Central

As for your integer question, try
<BLOCKQUOTE>code:<HR><pre>int a;
...
return [NSString stringWithFormat:@"%d",a];[/code]
"%d" is the format representation for an integer. See some printf documentation for more information.

You could also try
<BLOCKQUOTE>code:<HR><pre>int a;
...
return [[NSValue valueWithInt:a] stringValue];[/code]
which might be cheaper than evaluating a format string.

And for the random number, what exactly are you trying to do? One common trick is to set the seed when you start your program
<BLOCKQUOTE>code:<HR><pre>-(id)init {
self = [super init];
srandom(time(NULL));
return self;
}[/code]
and then later in the program, use some math to get your number. For example, if I want an int between 0 and 10, I'd use
<BLOCKQUOTE>code:<HR><pre>int a;
...
a = random()%10;[/code]
Does that help any?

[ 06-09-2001: Message edited by: starfleetX ]

dogzilla · Jun 9, 2001, 12:35 PM

That does help a huge amount. And I looked at the Obj-C Tutorial - I note it has what appears to be a language guide (although not an entirely standalone one - it's an accompaniment to another full C language guide). I think this is mostly what I'm looking for.

Now, if I could just do a search within dev central docs.

Angus_D · Jun 10, 2001, 03:51 AM

Originally posted by dogzilla:
Now, if I could just do a search within dev central docs.

You can. You have a local copy anyways, which when launched with Apple Help Viewer will let you search, and when you go to the one on developer.apple.com/techpubs I seem to remember there's a search option there.