4: Higher-Order Functions

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הוסף לפני nine שנים

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Species Unite

1
Jeff Kerr: Our First Amendment Right to Receive Communications (from Monkeys) 30:14

לפני 7 ימים30:14

הפעל מאוחר יותר

רשימות

לייק

אהבתי

30:14

"It is a scientific fact that these macaques, like all other primates, including humans, are communicating. They communicate in much the same way we do - facial expressions, vocalizations, body postures, those kinds of things." - Jeff Kerr Jeff Kerr is PETA foundations Chief Legal Officer. I asked him to come on the show to talk about one of PETA’s current lawsuits against the National Institutes of Health (NIH) and Nathional Institute of Mental Health (NIMH). PETA is arguing that the monkeys being tested on in a government run facility are capable of communication (or “are communicating”). And that we have a constitutional right under the First Amendment to receive their communications. This could be a game changer in allowing us to see what’s really going on in labs that are funded by taxpayer money, and which have so far been censored from public view. PETA’s lawsuit follows years of NIH’s attempts to deny Freedom of Information requests banning PETA executives from its campus and illegally censoring animal advocates’ speech on NIH’s public social media pages. Through the lawsuit, PETA is seeking a live audio-visual feed to see and hear real-time communications from the macaques who have been kept isolated, used in fear experiments, and had posts cemented into their heads. Anthropologists and other scientists have studied macaque and other primate communications for decades and know that the monkeys communicate effectively and intentionally through lip smacking, fear grimaces, body language, and various cries and sounds—all of which constitute speech under the law. Primatologists can analyze that speech on a deeper level to share their stories with the world.…

לפני 9 שנים 48:39

MP3•בית הפרקים

This episode we discuss the ins and outs of higher-order functions. If you've never heard of them don't fear they're not as scary as they sound, in fact you're probably already using them!

22 פרקים

#Programming #Software Development #Functional Programming #LambdaCast #Tech

4: Higher-Order Functions

LambdaCast

289 subscribers

published לפני 9 שנים

שתפו

MP3•בית הפרקים

This episode we discuss the ins and outs of higher-order functions. If you've never heard of them don't fear they're not as scary as they sound, in fact you're probably already using them!

22 פרקים

#Programming #Software Development #Functional Programming #LambdaCast #Tech

כל הפרקים

1
22: Structuring Data 44:23

לפני 6 years44:23

44:23

This time we discuss the way data tends to be structured in functional languages and some of the similarities with databases and REST. Episode 22 patrons: Jason Sooter Jamie Rolfs Christian Hamburger Daniel Svensson Di Wen Iulian Bojinca Jonathan Fishbein Nathan Sculli Nels Wadycki Paul Naranja Peter Tillemans Thomas Varney Tyler Harper weila wei Dawn (שחר) Show Notes: CPPCast: http://cppcast.com/ John Soo - Sharing in Haskell https://wiki.haskell.org/Sharing https://stackoverflow.com/questions/1105765/generating-fibonacci-numbers-in-haskell Alejandro’s link to Phantom Types article: https://www.objc.io/blog/2014/12/29/functional-snippet-13-phantom-types/ FP Chat Slack Community: https://fpchat-invite.herokuapp.com Intro/Outro music is "Lively Lumpsucker" by Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License…

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21: Type Parameters 1:14:41

לפני 7 years1:14:41

1:14:41

You may have seen generics in C#, Java, or Swift but there are a lot of very useful patterns using generics that rarely get used in an OO context. In this episode, we explore Type Parameters (aka generics) from a functional perspective and how using them can improve the structure of your applications. Episode 21 patrons: Scott Smith Joel McCracken Hakon Rossebo Seth Utecht Christophe Pereira da Conceicao E. Mulder Show Notes: Add a type parameter video: https://www.youtube.com/watch?v=BHjIl81HgfE Matt Parson's follow-up post: http://www.parsonsmatt.org/2017/04/08/maybe_use_a_type_parameter.html Stephen’s Twitter: https://twitter.com/S11001001 Type Parameter example in Scala: https://typelevel.org/blog/2015/09/21/change-values.html FP Chat Slack Community: https://fpchat-invite.herokuapp.com…

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20: Laziness 57:19

לפני 7 years57:19

57:19

Lazy evaluation is not normally something you hear programmers discussing but there is a lot of power available if you know how to use it. This episode we'll examine the differences between lazy and strict evaluation and look at use cases for laziness. Episode 20 patrons: Marcus Nielsen Steven Loe Ted Yavuzkurt Michael Meyers Szymon Beczkowski Parl Naranja Paul Brabban Jason Sooter Show Notes: Memoization: https://codeburst.io/functional-memoization-in-javascript-adec62508bd0 Using IEnumerable in C# to generate an infinite sequence: https://brianreiter.org/2011/01/14/ienumerable-is-lazy-and-thats-cool/ FP Chat Slack Community: https://fpchat-invite.herokuapp.com…

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19: Starting A Project Functionally 1:00:53

לפני 7 years1:00:53

1:00:53

Logan walks us through what his experience has been starting a JavaScript project in a functional style and using the best FP tools he can get in the JavaScript ecosystem. Episode 19 patrons: Nathan Sculli Lee Beck David Joyner Nihohit Charles Winebrinner FP Chat Slack Community: https://fpchat-invite.herokuapp.com…

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18: Monads 1:24:27

לפני 8 years1:24:27

1:24:27

Monads, the promised land of functional programming. Or at least with all the hype they'd better be! Come join the cast as we demystify this overhyped structure that has become an indispensable part of many functional programmer's toolkits. Episode 18 patrons: Pluton Tim Buckley Huge shout out to Marcus Nielsen Show Notes: bind :: m a -> (a -> m b) -> m b Example of do syntax vs using bind aka >>=: main = do foo <- doMonadyThing foo2 <- doOtherMonadyThing foo pure (whatever foo foo2) main = doMonadyThing >>= (\foo -> doOtherMonadyThing foo >>= (\foo2 -> pure (whatever foo foo2)) ) Extracting a value from a Maybe extract :: Just Int -> Int extract foo = case foo of Just num -> num Nothing -> 0 Railroad oriented programming talk by Scott Wlaschin fsharpforfunandprofit.com/rop/ FP Chat Slack Community: https://fpchat-invite.herokuapp.com…

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17: Applicative Functors 58:44

לפני 8 years58:44

58:44

Building on the power of functors we examine a few scenarios where a normal Functor is problematic. Fortunately, there is a closely related structure known as an Applicative Functor that can provide the capabilities to solve a broader range of problems. Episode 17 patrons: Chad Wooley David Keathley Andre Carvalho Show Notes: Coconut programming language: http://coconut-lang.org/ Hack nights instead of presentations: http://tech.noredink.com/post/142283641812/designing-meetups-to-build-better-communities class Functor f => Applicative f where pure :: Applicative f => a -> f a ap :: Applicative f => f (a -> b) -> f a -> f b Example of applicative usage: pure (+) <*> Just 3 <*> Just 2 -- this results in Just 5 (+) <$> Just 3 <*> Just 2 -- this is the same as above liftA2 (+) (Just 3) (Just 2) -- alternate form using lift instead of infix operators…

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16: Functors 1:06:08

לפני 8 years1:06:08

1:06:08

Going deeper down the category theory rabbit hole, we explore one of the most common and useful abstractions in the functional programming world. You're likely already familiar with Functors but just didn't know it yet. Episode 16 patrons: Chris Krycho Tyler Harper George Webster Show Notes: Functor map :: (a -> b) -> f a -> f b Bifunctor bimap :: (a -> b) -> (c -> d) -> f a c -> f b d Profunctor dimap :: (a -> b) -> (c -> d) -> f b c -> f a d Phil Freeman's talk on Profunctors: https://www.youtube.com/watch?v=OJtGECfksds…

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15: The FP Community 1:16:38

לפני 8 years1:16:38

1:16:38

Join us as we discuss the FP community. FP has a reputation as harsh and impenetrable but is that really the case? What can you do to make FP a more inviting place? Episode 15 patrons: Chris Lopes Gabe Johnson Randy Shepherd Noel Waghorn Correction: I incorrectly stated that one of the Recurse Center Social rules was “No Feigned Ignorance” it is actually “No Feigned Surprise” Show Notes: Cloud Haskell - http://haskell-distributed.github.io/tutorials/1ch.html Recurse Center Social Rules - https://www.recurse.com/manual Lambdaconf COC - http://fantasyland.institute/initiatives/COC.html Moonconf COC - http://maitria.com/coc Haskellbook - haskellbook.com NY Haskell speaker guide - https://docs.google.com/document/d/1065iwf918SDotEPc0q9TWP_F1haVyeK90MSaBg3IOn8/edit Spa day instead of pub meetup - https://twitter.com/sehurlburt/status/875848925529243648 Steven Syrek - https://twitter.com/sjsyrek…

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14: Dynamic and Static Languages 1:17:02

לפני 8 years1:17:02

1:17:02

The kind of type system a functional language uses has a large impact on the way you use that language. In this episode we discuss the tradeoffs involved in using a static or dynamic language. Our patreon sponsors this month: Javier Troconis Andrew Newman Derek Morr Olov Johansson Show Notes: Philip Wadler Talk: https://www.infoq.com/presentations/category-theory-propositions-principle Denotational Design Scott Wlaschin Poker Implementation https://exit.sc/?url=https%3A%2F%2Ffsharpforfunandprofit.com%2Fddd%2F Conal Elliot presentation on Denotational Design https://www.youtube.com/watch?v=bmKYiUOEo2A Our recomendation for a DDD book https://www.amazon.com/Patterns-Principles-Practices-Domain-Driven-Design/dp/1118714709…

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13: ADTs 1:10:07

לפני 8 years1:10:07

1:10:07

Algebraic Data Types (ADTs) are one of the most distinguishing features of statically typed functional languages. Come learn why they exist, how you can use them, and how they change your design. Join the FP community at http://fpchat.com Support us on Patreon at http://www.patreon.com/lambdacast Follow us on Twitter: http://twitter.com/lambdacast Show Notes: Denotational Design with the example of a Poker game https://fsharpforfunandprofit.com/ddd/…

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12: Monoids 1:05:33

לפני 8 years1:05:33

1:05:33

Into the icy maw of category theory starting with Monoids! In reality we find out it's not actually all that scary and there are some really fantastic things that we gain by understanding these basic categorical concepts. We now have a twitter account! Follow us at https://twitter.com/lambdacast We also now have a patron account if you're looking to support the show: https://www.patreon.com/lambdacast Show Notes: Haskell Diagrams library http://projects.haskell.org/diagrams/doc/quickstart.html https://vimeo.com/84104226 Chris Wilson pointed out that Haskell's Typeclassopedia has a nice chart of the relationship between Haskell's implementation of many categorical structures: https://wiki.haskell.org/wikiupload/d/df/Typeclassopedia-diagram.png…

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11: Aaron's C# Story 1:01:21

לפני 8 years1:01:21

1:01:21

We have launched our Patreon page, if you feel so inclined come support us at https://www.patreon.com/lambdacast C# Maybe(and lots more) https://github.com/louthy/language-ext Immutable Collections API https://msdn.microsoft.com/en-us/library/mt452182(v=vs.111).aspx Elm Language http://elm-lang.org/ PureScript Language http://www.purescript.org/…

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10: Partial Application 1:09:51

לפני 8 years1:09:51

1:09:51

Partial application and currying are a feature that is often mysterious to the uninitiated. Why do functional programmers care about such a seemingly useless thing? Partial application is an important part of the "FP toolkit" and we'll why and provide use cases for the importance of having partial application. Simple made easy - https://www.infoq.com/presentations/Simple-Made-Easy Scott Wlaschin https://fsharpforfunandprofit.com/fppatterns/ https://vimeo.com/113588389 - OO Patterns to FP Patterns talk Lodash/fp - https://github.com/lodash/lodash/wiki/FP-Guide Ramda - http://ramdajs.com/…

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9: Polymorphism And Abstraction 1:23:51

לפני 8 years1:23:51

1:23:51

Abstraction takes on a different meaning amongst functional programmers. This episode we dig into how parametric polymorphism is an essential tool in developing well behaved abstractions that transcend simply being a solution to your individual problem. John Degoes polymorphism post http://degoes.net/articles/insufficiently-polymorphic When x, y, and z are great variable names http://blog.ploeh.dk/2015/08/17/when-x-y-and-z-are-great-variable-names/…

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8: Morphisms 43:09

לפני 9 years43:09

43:09

Oh category theory, bastion of strange and wonderful terminology, (some might say terrible and inaccessible). Love it or hate it, you're likely to run into some terms from category theory if you spend enough time in FP land. In this episode we'll tackle some of the terms that make up the 'ism family of terms, morphism, endomorphism, isomorphism, homomorphism, and catamorphism. Denotational design talk: https://www.youtube.com/watch?v=bmKYiUOEo2A…

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