I also recommend logging a bug with Apple against this issue. You
shouldn't need to jump through those sorts of hoops with
NSKeyedArchiver.
On Wed, Jun 18, 2008 at 8:48 PM, Markus Spoettl
<[EMAIL PROTECTED]> wrote:
> On Jun 18, 2008, at 2:41 PM, Michael Ash wrote:
>>
>> Although it partially defeats the purpose of using NSCoder, you'll
>> avoid this whole path if you stuff all four doubles into a single
>> NSData. Don't forget to use the byte-swapping functions to ensure that
>> they all have a consistent representation across architectures.
>
>
> Well, what can I say, you and Quincey Morris are absolutely right. This is
> the way to go.
>
> The same data set takes just 4 seconds to store with a file size of 17.2MB.
>
> Thanks for all the help guys! For the record I'm posting the code below.
>
> Regards
> Markus
>
> - (void)encodeDouble:(double)value forKey:(NSString *)key withCoder:(NSCoder
> *)encoder
> {
> NSSwappedDouble sd = NSSwapHostDoubleToLittle(value);
> [encoder encodeBytes:(const uint8_t *)&sd length:sizeof(NSSwappedDouble)
> forKey:key];
> }
>
> - (double)decodeDoubleForKey:(NSString *)key withCoder:(NSCoder *)decoder
> {
> double result = 0.0;
> NSUInteger retsize;
> NSSwappedDouble *sd = (NSSwappedDouble *)[decoder decodeBytesForKey:key
> returnedLength:&retsize];
> if (retsize == sizeof(NSSwappedDouble)) {
> result = NSSwapLittleDoubleToHost(*sd);
> }
> return result;
> }
>
> --
> __________________________________________
> Markus Spoettl
>
>
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--
Mark Munz
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