Frost

1.9.2-p320 :001 > roses = "red" and "blue"
 => "blue" 
1.9.2-p320 :002 > violets = "red" && "blue"
 => "blue" 
1.9.2-p320 :003 > roses
 => "red" 
1.9.2-p320 :004 > violets
 => "blue" 

Frost

function cowsay_everything {
  if [[ ! "$BUFFER" =~ "vim|fg|%\d|clear" ]]; then
		BUFFER="$BUFFER | cowsay -n"
	fi
	zle accept-line
}
zle -N cowsay_everything_widget cowsay_everything

function cowsay_on {
	bindkey '^J' cowsay_everything_widget

Frost

Given a matrix

 1  2  3  4  5
 6  7  8  9 10
11 12 13 14 15
16 17 18 19 20

Unroll it as a spiral by printing first the top row, then the last column, then the bottom row backwards, etc.

Frost

class Foo(object):
  __slots__ = ( "foo", "bar" )
  def __init__(self):
    pass

f = Foo()
f.foo = "foo"
f.bar = "bar"
f.baz = "baz"

Frost

import Data.List

sum_zero :: (Integral a) => [a] -> Bool
sum_zero = any (==0) . map sum . filter ((>1) . length) . subsequences

Frost

"
" While editing a Markdown document in Vim, preview it in the
" default browser.
"
" Author: Nate Silva
"
" To install: Place markdown.vim in ~/.vim/ftplugin or
" %USERPROFILE%\vimfiles\ftplugin.
"
" To use: While editing a Markdown file, press ',p' (comma p)

Frost

def check_luhn(personal_number)
  personal_number.gsub(/\D/,'')[-10,10].split('').map.with_index {|c,i| i % 2 == 0 ? c.to_i * 2 : c.to_i }.join('').split('').reduce(0) {|memo,c| c.to_i + memo } % 10 == 0
end

Frost

# find modules that don't .npmignore their test (or tests) directories
# and how much disk space those tests take up
find node_modules -type d -name "test*" | xargs du -csh

Frost

# So... hash.new takes an optional parameter with a default value, that's neat.

> hash = Hash.new(0)
> hash["foo"]
=> 0
> hash["bar"] += 5
=> 5
> hash
=> {"bar" => 5}

Frost

Express.js nested apps and routing

So... Say we are building this API in express.js, and it's supposed to have these routes:

/v1
   /ping
   /foo
       /bar
       /baz