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AWS Lambda – Best practices
In this post we are going to go through the best practices while building an AWS Lambda function. In order to go through this blog you should know what is it and you should ideally have built at le…
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Clojure Linear Algebra Refresher: 1 – Vector Spaces
This article is a starting article in a series that is going to briefly skim through a good engineering textbook on linear algebra, making notes that help yo...
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Removing everything from GitHub
Github recently drafted an update to their Terms Of Service. The new TOS is potentially very bad for copylefted Free Software. It potentially neuters it entirely, so GPL licensed software hosted on Github has an implicit BSD-like license. I'll leave the full analysis to the lawyers, but see Thorsten's analysis .
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Rise and fall of JVM languages
Every now and then, there’s a post predicting the death of the Java language. The funny thing is that none of them writes about a date. But to be honest, they are all probably true. This is the fate of every language: to disappear into oblivion - or more precisely to be used less and less for new projects.
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Show HN: “Statements and State”, the next chapter of my book on interpreters
All my life, my heart has yearned for a thing I cannot name. André Breton, Mad Love
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Weaponizing PostScript
In a recent pentesting assignment, there was a service which converted uploaded files to PDF/A format, to make them safer for handling. Afte...
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The Story of a Rust Bug
A while ago, I built a system-tray application in Rust to notify me of new e-mail called buzz. It was working fine, but every now and again, it would fail to connect to the mail server on boot if it started before my network connection was up. Sounds easy enough to fix, so I just added a loop around my connect (even…
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Cracking Encrypted PDFs
I performed a brute-force attack on the password of an encrypted PDF and a brute-force attack on the key of (another) encrypted PDF, both PDFs are part of a challenge published by John August. The …
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Why undefined behavior may call a never-called function
My twitter feed has recently been filled with discussions about the following program #include <cstdlib> typedef int (*Function)(); s...
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Web Development in Go
You should write your next web server in Go. Yes, you! Compared with Ruby, PHP, Python, or Javascript, you're going to get great memory and latency performance, and libraries that do what you expect .
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What is a Source Map
These days web assets such as JS and CSS aren’t simple text files. Instead, they’re typically minified or come from a complex build process involving compili...
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Java Reflection, 1000x Faster
A few weeks ago I got to make some of my code 1000 times faster, without changing the underlying complexity! As the title implies, this involved making Java reflection calls faster.
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Compiling a Mac OS 8 Application on MacOS Sierra
A light hearted look back at my time programming in the 1990s as I try to get an old Minesweeper implementation of mine from 1999, written in C++ using PowerPlant for Mac OS 8, compiling in Xcode 8 and running on macOS Sierra.
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Building and using a 29-year-old compiler on a modern system
In this post I’ll share my experience of building and using one of the earliest versions of the GNU C Compiler — GCC 1.27 (released in 1988) on a modern system.
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Building account systems
Troy Hunt recently published a blog post titled “Authentication guidance for the modern era”. It has a big pile of solid advice on what…
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Smaller Code, Better Code
I was enjoying some pizza the other day with some buddies that know a bit about my research and understand where I am coming from with regards to my own computing aesthetics. They understand that I have always pushed for the smallest code that I can get, and to simplify
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Don't use Git rebase
You love rebasing, right? Rewriting history might be appealing, but there are good reasons not to.
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Why don't you just rewrite it in X?
Whenever a new programming language becomes popular its fanpersons start evangelizing its virtues by going to existing projects and filing b...
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Category Theory, Syntactically (2016)
A blog mostly on math, physics, and computer science.
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Building a legacy search engine for a legacy protocol
Most users who use the internet today, are mostly focused on three protocols, HTTP, TLS, and DNS.
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Compiling a subset of Python syntax to x86-64 assembly for fun and zero profit
A toy (but working) compiler that turns Python syntax into x86-64 assembly using Python's built-in AST module.
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Shell Has a Forth-Like Quality
This post takes a short break from ASDL to expand on one of my Hacker News comments.
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Dependent Types for F#
F# DependentTypes