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alexjohnj / vici.go
Created Apr 19, 2014
A program that performs a very basic frequency analysis on a string encrypted with a Caesar cipher.
View vici.go
// vici performs a very basic frequency analysis on a string of text encrypted with a Caesar cipher.
// It will output all possible keys and plaintexts for the ciphertext, with the most likely key/plaintext first and the least likely last
// Usage: vici [ciphertext]
// **NOTE** You'll need to run `go get` to build this program
// **NOTE 2** Since this outputs 26 lines of text to the console, you might want to redirect the output to a file.
package main
import (
alexjohnj / finddelta.jl
Last active Feb 16, 2016
Julia script to calculate length and azimuthal angles of a great circle joining two points on the Earth (ideally for seismology).
View finddelta.jl
#!/usr/bin/env julia
# A script used to find the length of the great circle joining two points on the
# Earth as well as the azimuth and back-azimuth of the great circle.
# USAGE: finddelta LAT1 LONG1 LAT2 LONG2
# OUTPUT: Absolute distance, angular distance, eq azimuth and back azimuth
# EXAMPLE (Great circle between the poles): finddelta -90 0 90 0
const EARTH_RADIUS = 6371_000
alexjohnj /
Last active Feb 27, 2016
A deployment script I use to push my Jekyll blog onto Amazon S3. It compiles sass files, generates the site, gzips HTML, CSS & JavaScript and then uploads the site to Amazon S3 using s3cmd.
#! /usr/local/bin/python3
""" Requirements: s3cmd, jekyll, gzip & sass.
Mk 2 of the script
To use this script, you'll need to edit your site's _config.yml file and add the following:
s3bucket: s3://bucket-name
Remember: Change the path_to_sass_file & sass_compile_path variables if you want to compile sass files. If you don't want to compile sass files, comment out the call to the compile_sass() function.
alexjohnj / Makefile
Created May 16, 2016
A generic Makefile template for somewhat complicated LaTeX documents.
View Makefile
# This is a generic Makefile that can be used to compile somewhat complicated
# LaTeX documents. It assumes a directory structure like this
# .
# ├── figures/*.{pdf,tex}
# ├── MAIN.tex
# ├── Makefile
# ├── Preamble.tex
# ├── sections/*.tex
# └── latex.out/
# and that you want to use a LaTeX runner such as latexrun or latexmk. The

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I hereby claim:

  • I am alexjohnj on github.
  • I am alexjohnj ( on keybase.
  • I have a public key ASAABAhSnp1HcvLjWxFiTYJxwMY27AfbSw-jYJq0ddlOrQo

To claim this, I am signing this object:

alexjohnj / BannerView.swift
Last active Dec 6, 2017
A UIView subclass that animates a banner down from the top of the screen (iOS 11+, Supports iPhone X)
View BannerView.swift
// swiftlint:disable file_length
// Created by Alex Jackson on 05/12/2017.
//Copyright 2017 Alex Jackson
//Permission is hereby granted, free of charge, to any person obtaining a copy of
//this software and associated documentation files (the "Software"), to deal in
//the Software without restriction, including without limitation the rights to
//use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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