View raise_volume.sh
#!/usr/bin/env bash
max=153
current_volume () {
pactl list sinks | grep -o "Volume: 0:[[:space:]]\+[0-9]\+" | sed 's/.*[[:space:]]//'
}
muted () {
pactl list sinks | grep "Mute: yes" > /dev/null
View database_authenticatable_default_option.diff
diff --git a/lib/devise/schema.rb b/lib/devise/schema.rb
index f0ff2a1..94296e4 100644
--- a/lib/devise/schema.rb
+++ b/lib/devise/schema.rb
@@ -14,7 +14,7 @@ module Devise
# encrypter password field in 128 characters.
def database_authenticatable(options={})
null = options[:null] || false
- default = options[:default] || ""
+ default = options[:default] || null ? nil : ""
View my_sort.rb
class Array
def my_sort
arr = self.clone
sorted = false
until sorted
arr.each_with_index do |e, i|
if i < (arr.length - 1) && e > arr[i+1]
arr[i], arr[i+1] = arr[i+1], arr[i]
end
end
View euler011.rb
grid = <<EOS
08 02 22 97 38 15 00 40 00 75 04 05 07 78 52 12 50 77 91 08
49 49 99 40 17 81 18 57 60 87 17 40 98 43 69 48 04 56 62 00
81 49 31 73 55 79 14 29 93 71 40 67 53 88 30 03 49 13 36 65
52 70 95 23 04 60 11 42 69 24 68 56 01 32 56 71 37 02 36 91
22 31 16 71 51 67 63 89 41 92 36 54 22 40 40 28 66 33 13 80
24 47 32 60 99 03 45 02 44 75 33 53 78 36 84 20 35 17 12 50
32 98 81 28 64 23 67 10 26 38 40 67 59 54 70 66 18 38 64 70
67 26 20 68 02 62 12 20 95 63 94 39 63 08 40 91 66 49 94 21
24 55 58 05 66 73 99 26 97 17 78 78 96 83 14 88 34 89 63 72
View euler010.rb
require 'mathn'
Prime.new.inject(0) { |sum, n|
break(sum) if n >= 2_000_000
sum + n
}
View euler009.rb
def pythagorean_triple(m, n)
m, n = n, m if m > n
[n**2 - m**2, 2*m*n, n**2 + m**2]
end
infinity = 1.0/0.0
catch :answer_found do
(1..infinity).each do |m|
(m+1..infinity).each do |n|
View euler008.rb
numbers = <<EOS
73167176531330624919225119674426574742355349194934
96983520312774506326239578318016984801869478851843
85861560789112949495459501737958331952853208805511
12540698747158523863050715693290963295227443043557
66896648950445244523161731856403098711121722383113
62229893423380308135336276614282806444486645238749
30358907296290491560440772390713810515859307960866
70172427121883998797908792274921901699720888093776
65727333001053367881220235421809751254540594752243
View euler007.rb
require 'mathn'
prime = Prime.new
10_000.times {prime.succ}
prime.succ
View euler006.rb
(1..100).to_a.reduce(:+)**2 - (1..100).to_a.reduce {|sum_of_squares, n| sum_of_squares + n**2}
View euler005.rb
(1..20).to_a.reduce :lcm