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Shareable zsh environment: EnvZ

Introducing EnvZ.

What is Envz?

During the course of normal production development we all tend to write a bunch of shell scripts and other useful command line utilities that help us out. Usually the end up being a bunch of one offs or stored in one mega .zshrc file. However, there’s something to be said about having a small framework to share environment utilities and to use as a jump off to “version” a shared set of utilities with team mates.

With that in mind I’ve been building out a small zsh bootstrapper that builds on tools that I like and use (like yadr) and gives a way to add pluggable team modules into it. All a pluggable module is is a sym link to another directory that auto loads .sh files on shell start. And while it sounds like a small thing, it’s actually really nice to be … Read more

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Review of my first time experience with haskell editors

When you start learning a new language the first hurdle to overcome is how to edit, compile, and debug an application. In my professional career I rely heavily on visual studio and intellij IDEA as my two IDE workhorses. Things just work with them. I use visual studio for C#, C++, and F# development and IDEA for everything else (including scala, typescript, javascript, sass, ruby, and python).

IDEA had a haskell plugin but it didn’t work and caused exceptions in intellij using intellij 12+. Since my main ide’s wouldn’t work with haskell I took to researching what I could use.

Requirements

While some people frown on the idea of an IDE, I personally like them. To quote Erik Meijer

I am hooked on autocomplete. When I type xs “DOT” it is a cry for help what to pick, map, filter, flatMap. Don’t know upfront.

Not only that, but I want … Read more

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Linear separability and the boundary of wx+b

In machine learning, everyone talks about weights and activations, often in conjunction with a formula of the form wx+b. While reading machine learning in action I frequently saw this formula but didn’t really understand what it meant. Obviously its a line of some sort, but what does the line mean? Where does w come from? I was able to muddle past this for decision trees, and naive bayes, but when I got to support vector machines I was pretty confused. I wasn’t able to follow the math and conceptually things got muddled.

At this point, I switched over to a different book, machine learning an algorithmic perspective.

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Here, the book starts with a discussion on neural networks, which are directly tied to the equation of wx+b and the concept of weights. I think this book is much better than the other one I was reading. … Read more

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