misc's Introduction

Misc - Snippets, write-ups, PoCs, etc.

I realized that people probably don't look through my gists for interesting content any more often than I look through theirs, so I've moved a few interesting ones here. I guess this is the sort of thing I would put on a blog if I had one.

Highlights

GatherJS is a concise example of how to refactor ES2015 code to a point-free, functional style using Ramda.

There have been several occasions where I've illustrated some algorithms (and how to access object internals in Python) for friends:

How explore a continuous region in a 2D grid using depth-first search, with animated output. Fragile GIF support.
A template class for algorithms on De Bruijn graphs.
How to structure a class for a simple text-based RPG in Python

Python snippets:

Avoid blocking on a possibly infinite pipe from STDIN
Use PyInotify to automatically run your test suite whenever you update certain project files.

There are a few *NIX-y things here as well:

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Bettercap developer's guide (draft)

These notes were made while reviewing Bettercap v2.8.0 - Vegas Flu.

What does `main()` do?

tl;dr:

// Init sess attributes to nil or empty vals
sess, _ := session.New()
// Just does s.Modules = append(s.Modules, modules.<module>(sess))
sess.Register(modules.<module>(sess))
// Config empty sess attributes and call various sess.setupThing() methods
// Does a lot, though
sess.Start()
// Parse and sess.Run() commands from -eval at cmdline
// Enable modules listed in sess.Options.Autostart:
sess.Run(modName + " on") for modName in sess.Options.Autostart
// Call sess.RunCaplet(caplet) if caplet specified at cmdline
// Finally, start interactive session
for sess.Active {
    line, _ = sess.Readline()
    for _, cmd := range.ParseCommands(line) {
        sess.Run(cmd)
    }
}