[Tutor] Magic numbers

[Phil]

On 5/8/21 4:43 pm, dn via Tutor wrote:
> On 05/08/2021 18.31, Phil wrote:

> It would certainly be more efficient to use a constant, in preference to
> re-calculating each time.
Thank you dn, I'll go with a global constant.
> What is the "128" against which you are comparing the calculation?
128 is bit 7, in this example, of an 8 bit number.
> If you can call it by some name, then give it that name, eg
> fitting_in_seven_bits.

I always have difficulty coming up with descriptive names and that's why 
I always end up with magic numbers that can make the code difficult to 
follow a fortnight later.

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Regards,
Phil