Blogmarks tagged programming
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Cognitive load is what matters (via) Excellent living document (the underlying repo has 625 commits since being created in May 2023) maintained by Artem Zakirullin about minimizing the cognitive load needed to understand and maintain software.
This all rings very true to me. I judge the quality of a piece of code by how easy it is to change, and anything that causes me to take on more cognitive load - unraveling a class hierarchy, reading though dozens of tiny methods - reduces the quality of the code by that metric.
Lots of accumulated snippets of wisdom in this one.
Mantras like "methods should be shorter than 15 lines of code" or "classes should be small" turned out to be somewhat wrong.
Programming mantras are proverbs (via) I like this idea from Luke Plant that the best way to think about mantras like "Don’t Repeat Yourself" is to think of them as proverbs that can be accompanied by an equal and opposite proverb.
DRY, "Don't Repeat Yourself" matches with WET, "Write Everything Twice".
Proverbs as tools for thinking, not laws to be followed.
scriptisto (via) This is really clever. “scriptisto is tool to enable writing one file scripts in languages that require compilation, dependencies fetching or preprocessing.”
You start your file with a “#!/usr/bin/env scriptisto” shebang line, then drop in a specially formatted block that tells it which compiler (if any) to use and how to build the tool. The rest of the file can then be written in any of the dozen-plus included languages... or you can create your own template to support something else.
The end result is you can now write a one-off tool in pretty much anything and have it execute as if it was a single built executable.
A Coder Considers the Waning Days of the Craft (via) James Somers in the New Yorker, talking about the impact of GPT-4 on programming as a profession. Despite the headline this piece is a nuanced take on this subject, which I found myself mostly agreeing with.
I particularly liked this bit, which reflects my most optimistic viewpoint: I think AI assisted programming is going to shave a lot of the frustration off learning to code, which I hope brings many more people into the fold:
What I learned was that programming is not really about knowledge or skill but simply about patience, or maybe obsession. Programmers are people who can endure an endless parade of tedious obstacles.
elite-source.asm—annotated source code for Elite on the BBC Micro (via) Mark Moxon has annotated every single line of the source code for Elite on the BBC Micro, and his annotations are so clear and in-depth that I can follow it despite knowing next to nothing about assembly code (and certainly nothing about writing it for the BBC).
awesome-falsehood: Curated list of falsehoods programmers believe in (via) I really like the general category of “falsehoods programmers believe”, and Kevin Deldyckehas done an outstanding job curating this collection. Categories covered include date and time, email, human identity, geography, addresses, internationalization and more. This is a particularly good example of the “awesome lists” format in that each link is accompanied by a useful description.
grammar.coffee (via) The annotated grammar for CoffeeScript, a new language that compiles to JavaScript developed by DocumentCloud’s Jeremy Ashkenas. The linked page is generated using Jeremy’s Docco tool for literate programming, also written in CoffeeScript. CoffeeScript itself is implemented in CoffeeScript, using a bootstrap compiler originally written in Ruby.
dustin’s gomemcached (via) A memcached server written in Go, an experiment by memcached maintainer Dustin Sallings.
The Go Programming Language. A brand new systems programming language, designed by Robert Griesemer and Unix/Plan 9 veterans Rob Pike and Ken Thompson and funded by Google. Concurrency is supported by lightweight communicating processes called goroutines. “It feels like a dynamic language but has the speed and safety of a static language.”
Toiling in the data-mines: what data exploration feels like. Useful advice from Tom Armitage on the exploratory development approach required when starting to build a project against a large, complex dataset. Tips include making sure you have a REPL to hand and using tools like gRaphael to generate graphs against pretty much everything, since until you’ve seen their shape you won’t know if they are interesting or not.
I like Unicorn because it’s Unix. Ryan Tomayko analyses Unicorn, a new, pre-forking Ruby HTTP server that makes extensive use of Unix syscalls and idioms, and asks why dynamic language programmers don’t take advantage of these more often.
The Little Manual of API Design (PDF). A concise, highly readable guide to designing APIs that are “Complete, Easy to learn and memorize, lead to readable code, hard to misuse, and easy to extend”, based on lessons learnt over many years of development of the Qt framework.
Switching from scripting languages to Objective C and iPhone: useful libraries. Matt Biddulph collects together some very useful libraries for developers just getting started with Objective-C (though I’m not too keen on the title).
Coding Horror: A Scripter at Heart. Sigh. I cannot believe that the false distinction between “scripting” and “programming” is still being discussed.
Learning to Think Like A Programmer. Outstanding advice aimed mainly at journalists, but important to anyone who collects information for a living and might want it to be automatically processed at some point in the future.
The History of Python (via) “A series of articles on the history of the Python programming language and its community”, being compiled by Guido plus guest authors.
why’s potion. why’s latest project is a small, fast language (JIT to x86/x86-64) which seems to take ideas from Ruby, Lua, Python and who knows where else. Everything is based around objects, closures and mixins, with the delightful inclusion of scoped mixins so you can modify an object only within a certain module (hence avoiding Ruby’s action-at-a-distance problems).
Blocks in Objective-C.
Closures are coming soon to Objective-C - interesting syntax, a regular curly brace block preceded by a caret ^{ ... }
.
The Universal Design Pattern. Steve Yegge presents a small book on key/value pairs and prototypal inheritance. “I call it the Universal design pattern because it is (by far) the best known solution to the problem of designing open-ended systems, which in turn translates to long-lived systems.”
Reia. The most common complaint I see about Erlang is the syntax. Reia is a Python-style scripting language (with a dash of Ruby) that runs on the Erlang virtual machine. Looks promising.
Core Techniques and Algorithms in Game Programming. Scarily detailed online book on games programming, including 2D and 3D graphics, AI, multiplayer network code, indoor and outdoor rendering, character animation and much more. UPDATE: Removed the original link, which appeared to be a pirated copy.
Good architectural layering, and Bzr 1.1. Mark Shuttleworth on the growing importance of plug-in architectures as an open source project evolves, as they allow new developers to release their own components without needing commit access to the project. Django is pretty good for this, but more hooks (and a faster event dispatch system) would be useful.
Naming twins in Python and Perl. Simple anagram problem solved in Perl and Python, with a bunch more solutions in the comments. The C# solution provides an interesting example of LINQ in action.
The D Language and Server Logs. Neat example of a simple D program for crunching log files.
Bit Twiddling Hacks. I’ve never been much of a bit twiddler, but I’ve always felt I should learn.
Programming Nu (via) Interesting new programming language—Lisp style syntax, Ruby style semantics, built in Objective C bridge so you can access Cocoa APIs directly.
Want To Learn Web Programming? Write A Blog Engine. I couldn’t agree more. Weblogs are an ideal starter project—simple enough to get your head around, complex enough to teach you a bunch of important lessons, ideally suited for eating your own dog food.
An Introduction to Erlang. Erlang gets the ONLamp tutorial treatment from Gregory Brown.
Brad Neuberg’s Personal Research Agenda. Inspiring; lots of interesting problems to solve. I also liked the idea of moving to Thailand during a tech downturn and hacking on interesting projects while spending $200/month on living costs.
19 Eponymous Laws Of Software Development. I normally loathe anything that’s bundled up as a numbered list, but this one is actually really useful.