Dmitri Iouchtchenko 0

Rating	Count	Histogram	Notes
★	32	█	Unbearable.
★★	136	██████	Drinkable.
★★★	128	██████	Beer.
★★★★	190	█████████	Really enjoyable. (Or tastes like an IPA.)
★★★★★	69	███	Amazing!

Brewery-ish/Brand-ish	Beer	Rating

arcfour.ss

For some reason, in January of 2009 I felt the need to implement RC4 in Scheme.

Known to work with Racket.

Specify the key and plaintext on the command-line as arguments, and it will output the ciphertext. For example,

Back in 2010, I needed some shellcode, so I wrote this. It spawns Vim rather than a shell, so I guess it's technically "vimcode".

It is, of course, null-free. There is a commented version in the test file, but here it is in its entirety:

\x31\xc0\x31\xc9\x99\x50\x68\x2f\x76\x69\x6d\x68\x2f\x62\x69\x6e\x68\x2f\x75\x73\x72\x89\xe3\xb0\x0b\xcd\x80

The following are instructions for building a GCC cross-compiler for the MSP430. They are based in part on Peter Bigot's post to mspgcc-users.

export PREFIX=/usr/local/msp430

	"Describe an algorithm that consumes five distinct comparable objects and
	produces the median of these objects using a total of at most six comparisons."

	Because creative thinking is hard, we use a simpler approach and try to compute
	a suitable program recursively. Programs are represented by a tree of
	comparisons at the internal nodes and resulting indices at the leaves.

	The following code has been tested with Python 2.6.8, 2.7.3, and 3.3.0.

	/* gcc -std=c99 -pedantic -Wall -Wextra -Werror -o arrays_pointers arrays_pointers.c
	*/

	#include <stdio.h>
	#include <string.h>

	#define A_LEN 5

	void foo(int a[], int *p);

	# Anaphoric if.
	macro aif(ex)
	@assert (ex.head == :if) "@aif must be applied to an if expression."

	cond = ex.args[1]
	ex.args[1] = :(convert(Bool, it))

	quote
	let it = $cond
	$ex

	#!/usr/bin/env python3

	"""
	Calculate complex square roots with the correct sign for trajectories in the
	complex plane.

	Taking the square root of values along a continuous trajectory in the complex
	plane is not as simple as calling a sqrt function, because the complex square
	root is a multi-valued function whose Riemann surface is composed of two
	sheets. If the trajectory crosses the branch cut (conventionally placed along