asaaki

[some_data.fetch('a_string', fallback_string)].reduce(replacer) { |r, s| s == criteria ? r : s }

# or a way simpler workaround:
(origin = some_data.fetch('a_string', fallback_string)) == criteria ? replacer : origin

asaaki

N people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. The have one torch and, because it's night, the torch has to be used when crossing the bridge. Each person takes a variable amount of time to cross.

When two people cross the bridge together, they must move at the slower person's pace.

The question is, how fast can you get N people across the bridge?

(Found via ).

asaaki

# Excludes the active branch + master and production
git branch --merged | \
  grep -v -e "\*" -e master -e production | \
  xargs -n1 git branch -d

asaaki

module M💩
  module_function
  
  def 🔫
    puts '💥'
  end
end

M💩.🔫

asaaki

# path to the jemalloc shared lib
LD_PRELOAD=/usr/lib/libjemalloc.so bundle exec rails server

# Also see: https://github.com/kzk/jemalloc-rb/issues/3

asaaki

# Condensed from http://blog.arkency.com/2015/09/testing-race-conditions/

wait_lock = true

threads = 5.times.map do |i|
  Thread.new do
    :noop while wait_lock # shortest no-op loop with break. Nice!*

    begin
      puts "Hooray from thread #{i}!" # Your awesome thread business logic here

asaaki

#!/bin/sh

# Shamelessly stolen from:
# https://github.com/michaeldfallen/git-radar/blob/master/git-radar#L7-L13

if [[ "$OSTYPE" == *darwin* ]]; then
  READLINK_CMD='greadlink'
else
  READLINK_CMD='readlink'
fi

asaaki

FROM nfnty/arch-mini

RUN pacman --sync --noconfirm --refresh --sysupgrade && \
    find /var/cache/pacman/pkg -mindepth 1 -delete

RUN pacman --sync --noconfirm \
    autoconf automake clang cmake cmake curl diffutils git grep llvm llvm-libs \
    m4 make make ncurses python2 sed subversion  vim wget which && \
    find /var/cache/pacman/pkg -mindepth 1 -delete

asaaki

defmodule SigilZ do
  defmacro sigil_z(input, flags) do
    quote do
      [input: unquote(input), flags: unquote(flags)]
    end
  end
end

# then:

asaaki

# Stolen from <http://stackoverflow.com/a/9025552/653173>
module HashExt
  def subhash(*keys)
    keys = keys.select { |k| key?(k) }
    Hash[keys.zip(values_at(*keys))]
  end
end