Proposal for new exercise: ResistorColor (Resistor Series #1)

[emcoding]

Resistors have color bands. Each color represents a number. Resistor can have up to 6 bands, and together they describe the resistance value in Ohms, together with the tolerance and the temperature coefficient.

We're planning to have a series of Resistor-* exercises, that are building up to decoding 4-6 band resistor color codes.

1. The new exercise ResistorColor
   The first and most basic one is just reading the (first) band's color from an array and return its numeric value.
   

See PR #1457

2. This is supposed to be part of a series of Resistor related exercises, in ascending complexity:

• Reading the first two bands and combine them to a number
• Reading TriBand, and returning a value in Ω (Ohms) or K Ω
• Reading 4 to 6 bands, returning the value in Ohms, the tolerance and the temperature coefficient. In those resistors, the meaning of the 3rd and 4th band is depending on the total number of bands.
  Coming soon!

[rpottsoh]

1. Will you be getting into combining resistors in series and/or in parallel?
2. Will the solution of one exercise be required before proceeding to the next?
3. Will this first exercise be recommended as a core exercise and then each of the follow-ons as a side?

Looking forward to learning more about what the forward looking plan might be.

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@rpottsoh :-))))

1. Not even thought of it. Great idea!
2. My thinking is: not in the first exercises. But in the more advanced ones, they can be, yes. Currently only core exercises can unlock other, so it also depends on how a track implements them. But for instance in Ruby, including one in the other can be a nice showcase for mixins.
3. Also, depending on the track. For instance for Ruby, the second one is more appropriate as a core exercise than the first one. I can imagine that it's good to have the second one as a core, if you want to have it included. On the other hand, it's also possible that the student writes the code to be mixed in at the moment that they need it in the later exercise. In general, I don't think we should force rules on how tracks implement such a series, but you're right, it would be nice to offer a optional plan. 👌

Thoughts?

[rpottsoh]

2. including one in the other can be a nice showcase for mixins

I am not sure I follow your meaning for mixins.

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Update about the series:

• # 1 : Resistor Color https://github.com/exercism/problem-specifications/tree/master/exercises/resistor-color
• # 2 : Resistor Color Duo https://github.com/exercism/problem-specifications/tree/master/exercises/resistor-color-duo
• # 3 : Resistor Color Trio

[rdai]

I am doing this on exercism dart track, https://exercism.io/my/solutions/3e1b3f982e614293b36ed824f78821bc

I am not sure the objective of the exercise is very clear as it is stated.