On Wed, Jul 6, 2016 at 9:54 AM, Alexey Komnin via swift-users
<[email protected]> wrote:
> Here is the code:
>
> let a: String = "abc"
> let b: NSString = "abc"
>
> assert(a == b)
> assert(a.hashValue == b.hashValue, "a.hashValue(\(a.hashValue)) !=
> b.hashValue(\(b.hashValue))")
>
> It fails with error:
> assertion failed: a.hashValue(4799450059707601744) !=
> b.hashValue(516202353)
>
> Perhaps, there is an issue with the equality operator.
String and NSString use different comparison algorithms, and thus use
incompatible hash codes.
When you issue a mixed-type comparison, one is bridged to the other.
Dmitri
--
main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
(j){printf("%d\n",i);}}} /*Dmitri Gribenko <[email protected]>*/
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