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Multi dimensional arrays, indexing items
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Multi dimensional arrays, indexing items


  • Subject: Multi dimensional arrays, indexing items
  • From: Mark Wridt <email@hidden>
  • Date: Fri, 3 Aug 2001 14:16:34 -0700 (PDT)

Thanks to all who helped with the file parsing
question, and indeed it did help.

But the issue I don't understand is concerning how I
would point to a specific element inside of a specific
array, for example:

The file parsing code:

//init string with file contents

NSMutableString *contentsOfFile = [[NSString alloc]
initWithContentsOfFile:path];

//init array and separate by '\n'

NSArray *listItems = [contentsOfFile
componentsSeparatedByString:@"\n"];

//loop through and create field arrays

for ( i = 0; i <= [listItems count] ; i++){
fields = [[listItems objectAtIndex: i]
componentsSeparatedByString: @"\t"];

NSLog (@"fields = %@", fields);
}

This creates output (in the log)in the form of:

Aug 03 16:01:57 attempt[3719] fields = (Bill, 6542, S,
06R, 4, 4, 32.634, E, "+", 20010625, 100, Miles)
Aug 03 16:01:57 attempt[3719] fields = (Fred, 6550, S,
06R, 4, 4, 32.634, E, "+", 20010625, 100, Miles)
...

The Problem:

I need to be able to point to and compare or calculate
an element in (C++-like) fields[i][j], that is,

"Bill" is in fields[1][1] and "6550" is fields[2][2]..

I noticed there wasn't an "NSVector" API, so I am at a
loss. Can anyone help?

Thanks again, and Cheers (it's Friday!),

Mark
Make international calls for as low as $.04/minute with Yahoo! Messenger
http://phonecard.yahoo.com/


  • Follow-Ups:
    • Re: Multi dimensional arrays, indexing items
      • From: Itrat Khan <email@hidden>
    • Re: Multi dimensional arrays, indexing items
      • From: Finlay Dobbie <email@hidden>
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