Laura_ride-share.rb

[lauracodecreations]

ride share

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Comprehension Questions

Question	Answer
What did your data structure look like at first? Did this structure evolve over time? Why?	Yes, when I tried to calculate total amount made per driver, I knew I needed the transactions to be in one array to call the .sum method
What was your strategy for going through the data structure and gathering information?	I spent a lot of time deciding on the structure before implementing it. It helped to think about how one would look like, and how to calculate the statistics for just one person, then expanding it to all the drivers and deciding what structure would be best for all structures
What was an example of something that was necessary to store in a variable? What was the scope of each of that variables? Why?	I needed to store all the money made by each driver in one array, to use .max to get the maximum amount made in the group and use that to identify the driver. This also applied to the maximum average rating. I declared these variables at the beginning and updated the variable with the max value.
What kinds of iteration did you use? Did you use .map?	.each, .each_with index, max_by
Were some calculations easier than others? Why?	yes, calculating money made, average rating, and total rides was easy because I could just access the data and use it in my equation for average, and calculating total

[CheezItMan]

Your data structure works although it can be a bit awkward to keep rating, date, rider and cost all aligned with the same index. You've got some good helper methods and you did a good job checking to see if a driver had multiple trips on one day. Really nice work! You hit all the learning goals.

[CheezItMan]

You're using parallel arrays here, which is fine, but it can be awkward to keep them aligned. It would be easier to have one array of trips with date, rider_id, rating, and cost keys.

[CheezItMan]

So this will replace the array of values with the sum, eliminating the original data.

[CheezItMan]

I would think about drying this out so you could have one block of code that would calculate the max money on each date regardless if they had 1 trip or multiple.

[CheezItMan]

There's also a group_by Enumerable which could be helpful.