Timeline for Is my barcode valid?
Current License: CC BY-SA 3.0
2 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 18, 2017 at 17:32 | comment | added | Dennis | !x=~2(1:8)%4⋅x%10==0 saves a few bytes. Try it online! | |
| Nov 17, 2017 at 4:26 | history | answered | Frames Catherine White | CC BY-SA 3.0 |