FP Daily Algorithm @DailyAlgorithm
A transparent algorithm a day keeps bugs away. Daily feed with algorithms written in functional Scala. github.com/pfcoperez/algo… Community of Madrid, Spain Joined October 2016-
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High fives for @maasg , @rreckel , @jlprat and @DailyAlgorithm - their support helped us get the game off the ground.
The type erasure paradox in #Scala
Compilation time prime numbers generation: Have you ever embedded/seen a list of prime integer literals in your source code to use them out of the box? What if #Scala macros helped to remove that monstrosity from your codebase? github.com/pfcoperez/algo…
Red-Black trees, second step: Left & right rotations, in DL trees parents can become children and children parents! github.com/pfcoperez/algo… And yet, rotations result in same in-order traverses but in different pre-orders: github.com/pfcoperez/algo… This only works in lazy universes.
Did you ever tie the knot in multiple dimensions:Red-Black trees,step-by-step. First: @typelevel 's Cats to define lazy structures via Eval monad: github.com/pfcoperez/algo… And how to create nodes with parents: github.com/pfcoperez/algo… In the next episode: Rotations & insert fix-up!
A Python implementation of a fifo queue using two stacks: github.com/dbader/data-st… x.com/DailyAlgorithm…
Q: What do you call 2 stacks working together? A: A Queue! github.com/pfcoperez/algo…
Double linked lists, with cats or how adopting @typelevel's Cats halves your lazy code thanks to its monadic representation of evaluation github.com/pfcoperez/algo… Thank you @meta_Lloyd for the idea!
Tying the knots... again, this time in both directions of a single dimension: pure Double Linked Lists: github.com/pfcoperez/algo… github.com/pfcoperez/algo… #functionalprogramming
Detecting loops in Linked Lists: O(n) github.com/pfcoperez/algo… github.com/pfcoperez/algo… As easy as making a fast and a slow pointers race against each other. Trust me, Math doesn't lie 😉 stackoverflow.com/questions/3952…
Immutable data loops strike back!Tying the not: A more traditional approach to get loops in your linked structures's that used in #Haskell for ages (wiki.haskell.org/Tying_the_Knot) but it's lazy by default whereas @scala_lang isn't & require some boiler plate... github.com/pfcoperez/algo…
@DailyAlgorithm is Back! In Oct 2016 a challenge was posted here: How to make a loop in an immutable linked data structure?x.com/DailyAlgorithm… What about passing `this` to a function building the tail in a node constructor? github.com/pfcoperez/algo…
A weekend challenge: How do we make a cycle in an immutable linked structure? e.g: Linked list (github.com/pfcoperez/algo…)
This feed'll be a bit stalled this month as the,so far,solo contributor's landing into a new job.New stuff directly from academic papers'll be here soon!Meanwhile,please,open PRs! They'll reviewed,welcomed and rewarded (yes, with stickers!) goo.gl/WqiscK
Matrix convolution is cool but erosive. Padding is one way to preserve the original size. O(1) github.com/pfcoperez/algo…
We had matrix multiplication but a leg was missing to perform #DeepLearning: Matrix Convolutions! O(n*m*f^2) github.com/pfcoperez/algo…
Convoluting polygons, Minkowski addition of convex polygons: O(n+m) No excuses for your vacuum robot cleaner to get stuck at your home's corners! github.com/pfcoperez/algo…
Be tail recursive: Best graphical representation of the difference between a tail-recursive optimized function and other that isn't. Found at @yworks 's yEd gallery: yworks.com/products/yed/g… Btw, yEd is the tool used to build the diagrams published in this feed.
Playing with elegant and pure code snippets is a pleasure, but your show allows people to meet cases where #FunctionalProgramming can be applied for "programming big" in projects you get paid for. Definitively, worth of sharing 👏 x.com/stevenproctor/…
Thanks for the complement and shout-out! Also happy that you find it worth sharing!!! ❤️❤️❤️ x.com/DailyAlgorithm…
FSA Minimization: Is your Finite State Automaton minimal? Don't waste your time optimizing it by hand! Instruct your computer to use Myhill-Nerode to do it for you. Make sure your Automata library helps you merge states: O(n²m²) github.com/pfcoperez/algo… github.com/pfcoperez/algo…
@stevenproctor It has a twitter account too: @fngeekery
#FunctionalProgramming ecosystem success cases by the hand of their authors and @stevenproctor , a great podcast to stay updated with the state of the art applications in the field: functionalgeekery.com
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