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Waldir Pimenta
Worked at VicomTech
Attends Universidade do Minho
Lives in Braga, Portugal
890 followers|368,499 views
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Waldir Pimenta

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Brilliantly funny!
 
“The conditions for a safe space are highly non-trivial. We had to ensure that each space had equal representations of homomorphisms, heteromorphisms, and even bimorphisms. The fact that many safe spaces exist under these constraints is truly remarkable.”
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Interesting analysis by the maintainer of Qt's MOC about the (proposed) future reflection and introspection capabilities of C++, and how that can eventually replace Qt's nonstandard code generator with native C++ functionality.

The relevant proposal is here: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3951.pdf ("C++ type reflection via variadic template expansion: From a type T, gather member name and member type information, via variadic template expansion.")
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we don't need no new keywords
we don't need no AST control
no magic namespaces or runtime structures

I have no idea what this is about, but it sounds like Pink Floyd.
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I couldn't resist any longer. I've pledged to Pebble's new Kickstarter campaign for a Pebble 2. Now with a heart rate monitor, microphone, plus the previous version's 7-day battery life, high-contrast e-paper display, waterproof, and a hackable OS fully open to community mods... what's not to like in it?? These guys know how to make a smartwatch, that's for sure.
Two affordable, heart rate-enabled smartwatches and a hackable, 3G ultra-wearable for phone-free running with GPS and music.
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For reference, this is the comparison I used to decide between the Pebble 2 and the Pebble Time 2: http://www.pocket-lint.com/news/137700-pebble-2-vs-pebble-time-2-what-s-the-difference
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Honestly, none of this should be impressive -- they are all common-sense measures that any tech company should adopt as a baseline.

I'd consider stuff like the 20% time for personal projects policy, gym memberships, in-office high-quality food service, play areas, etc. as impressive -- not this.
If you hire a new software engineer you should do whatever you can to make a good impression on their first day. This will have all sorts of benefits you may not have ever have considered. It will lead to increased retention rates so you will spend less money looking for a replacement in the future.
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This is the most accessible technology-related video I've seen in quite a while! It manages to explain the core concepts and even some technical details using examples and analogies relatable to most users (not developers) of modern applications. A nice format that should definitely be replicated by other explainer videos.
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It turns out JavaScript isn't as inappropriately named after all :P
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First public statement by the person behind the Pana Papers leak: https://panamapapers.icij.org/20160506-john-doe-statement.html
Source known only as John Doe says income inequality "one of the defining issues of our time" and calls on governments to address it.
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Waldir Pimenta

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John D. Gustafson's Unums seem almost too good to be true. But are they? Here's a very approachable slideshow introducing the topic:
In this deck, John Gustafson presents: An Energy Efficient and Massively Parallel Approach to Valid Numerics. "Written by one of the foremost experts in high-p…
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An interesting comment suggesting that most numerical computing pretty much reduces to a small set of operations. I'll let the author (+Chris Rackauckas)'s words speak for themselves:

At its core, just about every numerical algorithm is matrix math. Every nonlinearity or connection between terms becomes a matrix, and so every equation is either solving Ax or A\b. Even solving nonlinear equations becomes function calls to build matrices which we then solve with Ax or A\b (think of Newton/Broyden methods). Then, even A\b is about solving Ax in every iterative solver. Higher dimensional problems use tensor operators which normally generalize matrix multiplication, and so you can usually more compactly write them as matrix multiplication along different dimensions (and solve it efficiently via BLAS). So at its core, building all of these numerical libraries is all about repeatedly solving Ax, and so it may be the most used operation (along with +b).

https://groups.google.com/d/msg/julia-users/TzSBXz5JLdE/QiiGhlOQPAAJ
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Interesting comment on how "The Cathedral and the Bazaar" can be read to mean the opposite of the original intent: https://news.ycombinator.com/item?id=11755495
I was always turned off by this book's title. It really doesn't fit at all as a metaphor. In the middle ages, cathedrals were collaborative, public works projects. A whole city or town came together to build one. People from all social strata donated money or work to build the most splendid ...
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An interesting way to put it :P
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LISP: Lots of Irritating Silly Parentheses
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Enthralling!
 
Brilliant demonstration of a range of clever logic-switch-type tricks with magnets and marbles, and quite artistically choreographed.
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So it turns out dragons (real flying, fire-spitting ones) are entirely within the realms of possibility in our world. Fascinatingly detailed and beautifully illustrated breakdown of how such a beast could be constituted and operate.
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Guilty as charged ;-]
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Waldir's Collections
People
Have him in circles
890 people
Carlos Brito's profile photo
Marco Gomes's profile photo
‫אלומיניום בירושלים‬‎'s profile photo
Angela Antunes's profile photo
Stefen Schmitt's profile photo
Viriato Barros's profile photo
Leonildo v monteiro's profile photo
Rupesh Kumar Raj's profile photo
Alexandrino Spencer Èvora's profile photo
Communities
29 communities
Education
  • Universidade do Minho
    present
  • Instituto Politécnico de Viana do Castelo
  • Liceu José Augusto Pinto
Basic Information
Gender
Male
Other names
Waldir Spencer Pimenta Lima
Story
Tagline
graduate student, hopelessly perfectionist, nerdy geek, knowledge thirsty, wiki addict.
Work
Occupation
PhD student in Computer Generated Holography
Employment
  • VicomTech
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Braga, Portugal
Previously
Sal, Cape Verde - Viana do Castelo, Portugal - São Vicente, Cape Verde - Donostia-San Sebastián, Spain
Waldir Pimenta's +1's are the things they like, agree with, or want to recommend.
Sync for reddit – Aplicações Android no Google Play
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Sync for reddit (previously reddit sync) is a full-featured app for browsing the popular site reddit on the go. Featuring secure login, comm

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linuxcommando.blogspot.com

grep is capable of color-highlighting the matched string in its output. But, by default, that option is turned off. $ grep abc a_file.txt ab

LXD in the Sky with Diamonds
blog.dustinkirkland.com

Picture yourself containers on a server With systemd trees and spawned tty's Somebody calls you, you answer quite quickly A world with the d

Dutch Municipalities Must Come Up With a Common Plan For Basic Income Pi...
www.basicincome.org

The Dutch Ministry of Social Affairs wants cities who are interested in experimenting with basic income to come up with a common plan.

Go Ancestry
blog.mozo.jp

https://news.ycombinator.com/item?id=8715971 The revision history of Go language begins with a number of interesting commits: commit 18c5b48

Review BQ Aquaris M5 - análise completa - NewEsc
newesc.com

Hoje apresentamos a nossa review do novo Aquaris M5, o primeiro terminal da Gama M da BQ. Este terminal foi anunciado em fevereiro pelo CEO

Why Do We Sometimes Like To Smell Stinky Things?
phenomena.nationalgeographic.com

When a corpse flower named Trudy bloomed last weekend, more than a thousand people lined up for a whiff of its "magnificent stink." The gian

Scott Santens - Minimum Wages vs. Universal Basic Income
www.scottsantens.com

Minimum Wages vs. Universal Basic Income - One of these is a tool of the future, the other is a tool of the past

File:Monasterio de Santa María de San Clodio de Leiro (872055010).jpg - ...
commons.wikimedia.org

DescriptionMonasterio de Santa María de San Clodio de Leiro (872055010).jpg. Claustro Reglar o de la Portería, del siglo XVII, visto desde e

LIVRE/ TEMPO DE AVANÇAR: para uma candidatura cida
www.ustream.tv

Bem-vindos à subscrição da convocatória de uma convenção para uma candidatura cidadã nas próximas eleições legislativas.

Laura Schulz: The surprisingly logical minds of babies | Talk Video | TE...
www.ted.com

How do babies learn so much from so little so quickly? In a fun, experiment-filled talk, cognitive scientist Laura Schulz shows how our youn

Deb Roy: The birth of a word | Talk Video | TED.com
www.ted.com

MIT researcher Deb Roy wanted to understand how his infant son learned language — so he wired up his house with videocameras to catch every

A (very) few more details on Pluto
www.planetary.org

Last week the New Horizons mission released a few new processed versions of their latest and greatest images of Pluto. They're the best imag

Unicode 9.0 Candidate Emoji
blog.unicode.org

The Unicode Consortium has accepted 38 emoji characters as candidates for Unicode 9.0, scheduled for release in mid-2016. At this point, the

Nudging Novices: 5 Persuasive Patterns | Leif Singer's Blog
blog.leif.me

Back when I was at the University of Hannover working on my PhD, I was also involved in teaching. One of the most memorable experiences was

Wearality's 150 Degree Lenses Are a Balancing Act, Not a Breakthrough - ...
www.roadtovr.com

After hearing positive reports of Wearality’s 150 degree VR lenses, I was excited to try them for myself. Having done so, I

Public - 2 months ago
reviewed 2 months ago
It's on par with most mall cinemas around here. No complaints, but nothing strikingly remarkable about it either.
Public - a year ago
reviewed a year ago
I dined at this restaurant as part of a group of 6 people, and all of us enjoyed the experience greatly. The dishes have excellent quality and come in generous portions. It seemed to be a slow night, so we had the pleasure of being attended by the manager himself, who was very friendly and helpful. Highly recommended, especially for those wanting to try the typical Portuguese codfish dishes, of which they have a large variety.
Public - 3 years ago
reviewed 3 years ago
4 reviews
Map
Map
Map
The location and view are excellent, but at least on the few times I went there, the service was somewhat slow, the music was too loud, and the nicest area was also the smoking area, which is rather inconvenient. Not to mention the prices being higher than average. It's a nice place to get to know if you haven't yet, but not one I'd recommend enthusiastically.
Public - a year ago
reviewed a year ago