[Scala] Extract concepts of v2 hamming exercise #399
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aimorris
changed the title
| - integer: `Int` is used as return result within `Option` | ||
| - Option: `Option` is used as return result | ||
| - math operations: `==` | ||
| - zip: combine two strings into a sequence of tuples |
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I think this is an implementation of a more general concept. Something like "collections - combining".
| - Option: `Option` is used as return result | ||
| - math operations: `==` | ||
| - zip: combine two strings into a sequence of tuples | ||
| - count: count number of lambda calls that return true |
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Similar concept to before, where I think this is an implementation of a more general concept like "collections - folding" or "collections-reducing" or something like that?
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You said reduce in my PRs i think
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Right. Whoops. I don't mind us not using the exact same terminology, we'll fix this when compiling the final list.
| # Using range and count to count differences | ||
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| - range: define range of indexes to stream over | ||
| - count: count number of lambda calls that return true |
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Similar comment to an earlier comment on implementation vs. general concept.
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| - filter: remove matching characters from zipped sequence | ||
| - lambda: define lambda to compare characters | ||
| - size: calculate size of sequence |
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Similar comment to an earlier comment on implementation vs. general concept.
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Maybe - "collections - length"?
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Ehm, isn't this a special case of "collections - reduce"? I.e. having a collection and reducing it to a single value?
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I am not so sure. I see your point. But length/size seems like simple/native functionality on a collection. Where reduce seems like more advanced. A student could easily understand what length means without having any idea how to reduce a collection.
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I see. But is the Concept then maybe simply method types? The thing I'm getting at, is that there is not much special to the length of a collection in terms of Concepts.
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I see - then maybe this falls under a general "collections" concept? As opposed to "collections - reduce". I still think "reduce" is a different concept.
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I could have changed this @ErikSchierboom - you didn't have to merge with collections-length in there.. If you still want me to change it to something else, it is not a problem.
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No worries, we can look at this later.
Initial attempt at extracting hamming concepts. Refs #295