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require 'yaml' | |
def excluded_dir?(filename) | |
filename == "." || filename == ".." | |
end | |
%w(javascript ruby).each do |lang| | |
puts "Renaming #{lang} snapshots..." | |
Dir.foreach(lang+"/") do |subfolder| |
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class AnimalsController < ApplicationController | |
inherit_resources | |
.. | |
protected | |
def build_resource_params | |
animal_params = params.fetch(:animal, {}).permit(:name, :age, :family) | |
[prepare_animal_params(animal_params)] |
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class PaginatingDecorator < Draper::CollectionDecorator | |
delegate :current_page, :total_pages, :limit_value | |
end |
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n = 100000 | |
primes = (0..n).select{ |i| i if (2..i-1).select{ |j| j if i%j == 0}.count == 0} | |
puts primes.inspect # => [1, 2, 3, 5, 7, ..., 9973] |
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n = 100 | |
primes = (1..n).map{ |i| i if (2..i-1).map{ |j| j if i%j == 0}.compact.count == 0}.compact | |
puts primes.inspect # => [1, 2, 3, 5, 7, ..., 97] |
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n = 100 | |
whole_factors = [i for i in range(1, n) if 0 == len([j for j in range(2, i-1) if i%j == 0])] | |
print whole_factors # => [1, 2, 3, 5, 7, ..., 97] |
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[ITEM for ITEM in RANGE if CONDITION] |
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# collect the even numbers in a given range | |
# 1. using regular py | |
evens = [] | |
for i in range(1, 10): | |
if i % 2 == 0: | |
evens.append(i) | |
# 2. using list comprehension |
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<%= semantic_nested_form_for [:admin, @user], :html => {:multipart => true} do |f| %> | |
<%= f.inputs 'User Information' do %> | |
<%= f.input :name %> | |
<%= f.input :age %> | |
<% end %> | |
<%= f.inputs 'User's Pet' for: [:pet, f.object.pet || Pet.new] do |pet| %> | |
<%= pet.input :name %> | |
<% end %> |
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<div id="multiple-datasets"> | |
<input class="typeahead" type="text" placeholder="Poets and Philosophers"> | |
</div> |
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