Re: Question about getBytes:length:
Re: Question about getBytes:length:
- Subject: Re: Question about getBytes:length:
- From: "Eric E. Dolecki" <email@hidden>
- Date: Tue, 24 Nov 2015 05:04:04 +0000
That method is not my code so I can't speak to it. It's from a github
example from a company supplying BT shields for Arduino.
On Mon, Nov 23, 2015 at 11:57 PM Charles Srstka <email@hidden>
wrote:
> On Nov 23, 2015, at 9:55 PM, Eric E. Dolecki <email@hidden> wrote:
>
> -(int) compareCBUUIDToInt:(CBUUID *)UUID1 UUID2:(UInt16)UUID2
> {
> char b1[16];
>
> * [UUID1.data getBytes:b1]; //<---*
>
> UInt16 b2 = [self swap:UUID2];
> if (memcmp(b1, (char *)&b2, 2) == 0)
> return 1;
> else
> return 0;
> }
>
>
> Is there a possible typo here? It looks like you’re reading in 16 *bytes*
> of data, and then comparing it against an integer that is 16 *bits* in
> size. Is that what you meant to do?
>
> At any rate, you’re only comparing the first two bytes here; the other
> fourteen will never be used, unless the code above is a simplification.
>
> Charles
>
>
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