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D.E. Akers 0x0dea

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0x0dea / ova.rb
Created March 23, 2015 20:29
"Real" method overloading in Ruby!
module Ova
# autovivifying map from [class][method][signature] to Method
@@Ova = Hash.new { |h, k| h[k] = Hash.new(&h.default_proc) }
# Wrap #respond_to? for parity with Class#===.
Responder = Struct.new(:method) do
def === obj
obj.respond_to?(method)
end
end
@0x0dea
0x0dea / hspal
Last active June 10, 2021 03:46
This is a Ruby interpreter for Hexadecimal Stacking Pseudo-Assembly Language, an esolang devised by ‎SuperJedi224. With its single register and multitude of independent stacks, it feels a bit like Whitespace turned inside-out.
#!/usr/bin/env ruby
class HSPAL
# Enforce unsigned 16-bit data by clamping all entries.
class Stack < Array
def << val
super [0, val, 0xFFFF].sort[1]
end
end
@0x0dea
0x0dea / daily_programmer_210e.rb
Created April 13, 2015 22:19
This script uses 237,267 anonymous functions (and, essentially, only those functions) to determine that 17 and 10 have four bits in common.
$fns = 0
# Automatically curry all functions for slightly greater legibility.
# Keep track of how many functions end up getting created (for laughs).
# Get to use the fancy symbol everywhere.
def λ
$fns += 1
proc.curry
end
class Fixnum
def call prog
return unless self == 4
unless prog = prog.delete(' ')[/\A3\.(\d*)4\z/, 1]
raise SyntaxError, "Program must begin '3.' and end '4'.", caller
end
arity = [3, 3, 3, 3, 0, 1, 2, 1, 1, 0]
cells = [i = pc = 0] * 100
insns, loops, stack = [], {}, []
@0x0dea
0x0dea / process_gsub.rb
Created April 26, 2015 23:08
Process.gsub lets you search and replace within your process's live memory!
def Process.gsub pat, sub
mem = File.open('/proc/self/mem', 'r+')
maps = File.open('/proc/self/maps')
maps.each do |map|
from, to, perms, offset = map.scan(/(\h+)-(\h+) (\S+) (\h+)/)[0]
if perms['rw']
from, to = [from, to].map { |addr| addr.hex + offset.hex }
data = mem.tap { |m| m.seek from }.read(to - from) rescue next
@0x0dea
0x0dea / datg
Created June 14, 2015 22:27
Download all the gems!
#!/bin/sh
gem search --no-vers | parallel -j0 -I$ 'curl -O `curl https://rubygems.org/api/v1/gems/$.json | jq -r .gem_uri`'
@0x0dea
0x0dea / enum.patch
Created June 17, 2015 12:16
Add case equality checks to Enumerable#any?/all?/none?/one?.
diff --git a/enum.c b/enum.c
index 4b1e119..c717540 100644
--- a/enum.c
+++ b/enum.c
@@ -1043,7 +1043,7 @@ enum_sort_by(VALUE obj)
return ary;
}
-#define ENUMFUNC(name) rb_block_given_p() ? name##_iter_i : name##_i
+#define ENUMFUNC(name, argc) argc ? name##_eqq : rb_block_given_p() ? name##_iter_i : name##_i
@0x0dea
0x0dea / enumerable_all.rb
Created June 17, 2015 12:45
Improved Enumerable#all?
module Enumerable
def all? p = nil
pred = block_given? ? proc : -> x { p ? p === x : x }
each { |obj| return false unless pred[obj] }
true
end
end
@0x0dea
0x0dea / composable_ish.rb
Created June 28, 2015 04:24
Pseudo-class composition in Ruby.
module Composable
extend self
def extended klass
klass.send :attr_reader, :val
end
def method_missing klass
f, g = self, const_get(klass)
@0x0dea
0x0dea / slowlag.rb
Last active August 29, 2015 14:23
Hangman autoclicker for #ruby-offtopic (when the category is ruby)
require 'socket'
s = TCPSocket.new 'irc.freenode.net', 6667
s.puts "NICK slowlag"
s.puts "USER slowlag 0 * :slowlag"
s.puts "JOIN #ruby-offtopic"
all = File.read('all').split("\n")
can = all.dup