Yep, and it's increasingly common around the world. In Australia, it's also fully rolled out in Brisbane and I believe it's just about finished being rolled out in Melbourne too.
Binary fractions of a turn are also a nice intuition pump for two's complement in general.
Let's keep it simple and use just 8 bits. 0° is 0x00, 180° is 0x80, and 255/256ths of 360° is 0xFF. And if we wanted to use signed integers, then 0x80 through 0xFF - the high-bit half of the range - now represent the negative quadrants just as they represent negative integers.
Yeah, but there's certainly a part of the curve where price drops by X OOMs and demand increases by much more than X OOMs. (Presumably some of that is substitution and some of that is new use cases.)
The base model chip on the Air is binned too - 8 GPU cores on the Air vs 10 on the Pro.
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