%16x pads with spaces instead of zeros, use %016X for uppercase zero-padded output. `man 3 printf` will show the full spec (minus the objc-specific %@), or Apple probably documents it somewhere. It breaks down like this:
- x/X is a format saying it’s an int type and should be printed in hex with lowercase/uppercase a-f. - ll is a flag saying the int is a long long. - 16 says the output from that format spec should be 16 characters wide (right-aligned by default) - 0 says left-pad with zeros instead of the default spaces. > On May 25, 2016, at 12:10 PM, Ken Burgett <k...@iotone.io> wrote: > > On 2016-05-25 12:00, Jens Alfke wrote: >>> On May 25, 2016, at 11:11 AM, Ken Burgett <k...@iotone.io> wrote: >>> the "%llx" field is not getting interpreted... >> You have to import Foundation to bring in the String.init(format:…) >> method, which is bridged from Foundation's NSString class. >> (This is a temporary inconvenience until the Swift standard library is >> complete.) >> —Jens > Hi Jens, > > You are correct, the "%llx" works for UInt64, while "%16x" does not. "%llX" > also works, producing an uppercase string. > > Should this be reported as a bug? > -- > Ken Burgett > Principal Software Engineer > Email: k...@iotone.io > Office: 530.693.4449 > Mobile: 831.332.6846 > URL: www.iotone.co _______________________________________________ swift-users mailing list swift-users@swift.org https://lists.swift.org/mailman/listinfo/swift-users
