hyperuser178

/**
 * @author [PlayerPencil](https://www.zhihu.com/question/658017543/answer/18224117594)
 * Original Post:
 * You might not believe it, but this is actually a simple program
 *  of operating system (just kidding). It's based
 *  on time-slice scheduling with no preemption, though it does have
 *  task priorities. The whole program is only about 100 lines long.
 * Embedded developers, feel free to take it. It's
 *  been running smoothly for about 100 days now—the `systick` timer
 *  has even timed out several times.

hyperuser178

註曰「「此為鏈表節點煉製之術也。」」

吾有一術。名之曰「節點煉製」。欲行是術。必先得一數。曰「甲」。乃行是術曰。
    吾有一物。名之曰「所求節點」。其物如是。
        物之「「數據」」者。言曰「甲」。
        物之「「前驅」」者。言曰「null」。
        物之「「後繼」」者。言曰「null」。
    是謂「所求節點」之物也。
    乃得「所求節點」。
是謂「節點煉製」之術也。