What exactly is PINB | = 0b00000001;

[bperrybap]

@Grumpy_Mike

Where did you see that comment, it is very stupid. Direct port manipulation is the fastest way possible of changing bits. So there is no way any code can be 10X faster.

I believe he was referring to the speed of digitalWriteFast vs digitalWrite.
digitalWriteFast was the context of the sentence just prior to what he said about digitalWrite.

--- bill