look + programming   499

Why Rust's error handling is awesome
Includes example of failure crate to add context.
programming  rust  error 
4 weeks ago by look
The Codex » I Do Not Like Go
Well written critique of Go's design, hitting the usual points.
golang  programming  critique 
12 weeks ago by look
Units of Measure (F#) | Microsoft Docs
F# has a nice feature where number types can be associated with a unit of measure. The compiler then prevents common errors (e.g. multiplying a inches by centimeters).
fsharp  programming 
september 2017 by look
(unlikely to be) The Last Word on Interviewing for a JavaScript Job
"Quite frankly, whiteboard problems in interviews are minefields. When asked a programming question, an interviewer might want to see any of the following mutually exclusive things:

1. Demonstrate that you can put together any old basic thing (“FizBuzzing”).
2. Demonstrate that you understand algorithm fundamentals like space and time requirements, mutability, state, and so forth.
3. Demonstrate the kind of code you’d write in production for colleagues to understand and maintain.
4. Demonstrate that you are current and familiar with the latest developments in your toolset, regardless of whether you are employing them in production.

You really can’t answer all of these in one code snippet. If the interviewer is just trying to quickly weed out the bullshitters, they don’t want you to factor the code and write tests for each piece. But if they want to see how you write code for production, they do. If they want to know that you’re keeping up to date, they might want to see you demonstrate your knowledge of some new language features.


Assume that most people are good at their primary job, and happen to be less than amazing at this part-time necessity of interviewing or being interviewed."
hiring  interview  programming  career 
august 2017 by look
graydon2 | "What next?"
Creator of Rust muses on possible advances in general purpose programming languages.
programming  language  future 
august 2017 by look
HTTP requests in Python - michaelgalloy.com
"The “Zen of Python” provides the basic philosophy of Python. From PEP 20:

There should be one — and preferably only one — obvious way to do it.

I doubt there is a single area in Python that violates this more than making a simple HTTP request. Python provides at least six builtin libraries to do this: httplib, httplib2, urllib, urllib2, urllib3, and pycurl. There are several reviews comparing the various libraries."
python  programming 
july 2017 by look
Iterators and Streams in Rust and Haskell
Deep dive on performance of idiomatic and non-idiomatic Rust and Haskell code.
programming  haskell  rust  performance 
july 2017 by look
How do you cut a monolith in half? — programming is terrible
"Using a message broker to distribute work is like a cross between a load balancer with a database, with the disadvantages of both and the advantages of neither."
programming  architecture  distributed  microservice 
june 2017 by look
#NoTDD – Eric Gunnerson's Compendium
"Instead of spending time teaching people TDD, we should instead be spending time teaching them more about design and especially more about refactoring, because that is the important core skill."
tdd  programming  testing  design  refactoring 
june 2017 by look
Scala Collections Tips and Tricks
Good cookbook of Scala collection operations and what is most idiomatic.
programming  scala 
june 2017 by look
Build your own Command Line with ANSI escape codes
Escape codes. Example in Python but works in any language.
cli  programming  shell  terminal  python 
june 2017 by look
Appcanary - Simple Ain't Easy, but Hard Ain't Simple: Leaving Clojure for Ruby
'“Simple != Easy” Is One Of The Most Toxic Ideas Ever Introduced To Programming'
programming  clojure  ruby  culture 
june 2017 by look
Lessons Learned – Scala Design Failure: Implicit Numeric Conversions
Implicit conversion of numeric types is broken and can't be disabled.
programming  scala  gotchas  conversion 
may 2017 by look
Functional Ciphers in Ruby
Example of using infinite lazy enumerator in Ruby.

"Enumerator is lazy-ish.... However, using a method such as map that acts on every item will never return because this is an infinite series. We will need true laziness to get this one to work."
ruby  functional  programming 
may 2017 by look
Programming in the Point-Free Style – Eirik Tsarpalis' blog
"I claim that the [non-point free] implementation provides the simpler and more idiomatic solution, for many reasons:

- it’s easiest to read and understand.
- it assigns a name to the argument, which is exposed as part of the type signature.
- it provides the most efficient implementation, avoiding gratuitous allocations/invocations of lambda objects.
- it allows setting of breakpoints, a crucial ability when debugging large codebases."
programming  functional  fsharp 
april 2017 by look
You Don't Need Referential Transparency - Hypothesis
The only requirement that property based testing has on the side effects your tests may perform is that if your test has global side effects then it must be able to roll them back at the end.

If that sounds familiar, it’s because it’s exactly the same requirement every other test has. Tests that have global side effects are not repeatable and may interfere with other tests, so they must keep their side effects to themselves by rolling them back at the end of the test."
testing  programming  software  python 
april 2017 by look
/usr/sbin - Selling Monads
"I think the code reuse justification is greatly undersold, and it’s been undersold to such an extent that many languages that adopt abstractions like Monad often don’t do it in a way that allows for code reuse. Scala is an example of this, where many classes have a flatMap method, but this method is not implemented as part of any interface. This loses an important benefit of general interfaces like Monad and only leads to further confusion."
functional  programming  haskell  monad 
april 2017 by look
Crafting Interpreters
Build your own programming language.
programming  book  language 
march 2017 by look
Complexity and Strategy
"So 'free code” tends to be 'free as in puppy' rather than 'free as in beer'."
programming  software  engineering 
march 2017 by look
Acing the technical interview
Reversing a list from first principles.

"No time for descriptive variables, examples, or docstrings here. In the whiteboard interview, time is of the essence. Pretend you are a Haskell programmer, as your grandmother was, before her continuation passed."
programming  interview  funny 
march 2017 by look
Parsing Expression Grammar parser generator for Ruby.
programming  ruby  parser 
march 2017 by look
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