> On Jun 26, 2017, at 1:55 AM, Daniel Vollmer via swift-users > <swift-users@swift.org> wrote: > > Hi Rick, > >> On 26. Jun 2017, at 02:37, Rick Mann via swift-users <swift-users@swift.org> >> wrote: > > [snip] > >> I'd also like to avoid unnecessary copying of the data. All of it is >> immutable for the purposes of this problem. >> >> How can I get the UInt16 that starts at byte X in a Data? Same goes for >> Double or Int32 or whatever. > > I’m not sure what Swift’s stance on this is, but not all platforms allow > misaligned memory accesses (such as your attempt to access a UInt16 that lies > at an odd memory address).
Unaligned memory accesses are not currently allowed by the language semantics, regardless of the underlying ISA. You should use memcpy if you need to load potentially-unaligned values out of raw memory. -Joe _______________________________________________ swift-users mailing list swift-users@swift.org https://lists.swift.org/mailman/listinfo/swift-users
