Slides are available here: https://github.com/skovtunenko/exadel-golang-course-2022/blob/main/session09_Interfaces_and_Functions_in_Go/Funcitons_and_Methods_in_Go_Introduction_to_Interfaces.pdf Code available here:https://github.com/skovtunenko/exadel-golang-course-2022/tree/main/session09_Interfaces_and_Functions_in_Go/code
23:14, It may not always print c,c,c. It could print a,b,c or a,c,c depends on when goroutine gets executed.
@roberto_camp