Arduino Scheduler lib does not work for esp8266

[shiftleftplusone]

the Scheduler examples (e.g. SchedulerBlink) do not compile for the esp8266
https://github.com/mikaelpatel/Arduino-Scheduler/tree/master/examples/SchedulerBlink
https://www.arduino.cc/en/Reference/Scheduler

when will there be a working adapted Scheduler lib for the esp8266?

(Arduino IDE 1.8.5, 1.8.4, 1.8.3 tested)

[5chufti]

why not ask the author of Arduino-Scheduler?
Or get hands-on, port it yourself and present it via support forum (http://www.esp8266.com)?
This is not an issue with the arduino esp8266 core, so please close this issue per issue policy #3571

[devyte]

This is not implemented, and is not currently planned within this repo.
Closing as duplicate of #3390 .