[Engineering] [Talk] What is functional programming? (17')

Tue Apr 19 08:44:58 UTC 2016

Great talk, mostly about testing though, but very clear explanation of the
different types of tests, and when and for what to rely on them.

I didn't agree too much with his dependency injection arguments, since they
are only valid for staticly typed languages without monkey patching
facilities. As the ruby guy mentioned, a solid framework (like rspec) makes
monkey patching for testing very solid and the pro is that it reduces the
impact of the tests on your code (in the sense of having to change code to
acomodate testability, like with dependency injection).

I have another awesome talk to suggest that bonds both that we've posted,
Boundaries by Gary Bernhardt (youtube, talk with code examples
<https://www.youtube.com/watch?v=yTkzNHF6rMs> 45' || destroyallsoftware,
just the talk 30' <https://www.destroyallsoftware.com/talks/boundaries>).
This one is one of my favorite ones.

Summary:* This talk is about using simple values (as opposed to complex
objects) not just for holding data, but also as the boundaries between
components and subsystems. It moves through many topics: functional
programming; mutability's relationship to OO; isolated unit testing with
and without test doubles; and concurrency, to name some bar.*

On Mon, Apr 18, 2016 at 8:33 PM, Stephen Niedzielski <
sniedzielski at wikimedia.org> wrote:

> This is great! Functional programming is really awesome. Your video
> reminded me of an exemplary, longer form talk by the AngularJS guy on
> dependency seams and testing:
>
> https://www.youtube.com/watch?v=wEhu57pih5w
>
> It's a little longer but a life changer if you haven't thought about
> testability in depth.
>
> On Mon, Apr 18, 2016 at 2:41 AM, Joaquin Oltra Hernandez <
> jhernandez at wikimedia.org> wrote:
>
>> I've come across this lovely little talk (british accent +1) that
>> explains what is functional programming quite clearly in my opinion. Worth
>> a watch.
>>
>> Kris Jenkins: What is Functional Programming?
>> https://www.youtube.com/watch?v=tQRtTSIpye4
>>
>> Takeaway: Functional programming is about eliminating side-effects where
>> you can, controlling them where you cant.
>>
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>
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