clm-a

# Find me at https://gist.github.com/863277
# Run me with "rails new myapp -J -m https://gist.github.com/raw/863277/rails3-template-with-devise-compass-and-friends.rb"
# You should visit
# http://everydayrails.com/2011/02/28/rails-3-application-templates.html
# http://railswizard.org
# http://stackoverflow.com/questions/4999207/rails-3-application-templates
# https://github.com/fnichol/rails-template-recipes
# for some inspiration about application templates.
# twitter.com/@clmntlxndr

clm-a

<%= form_for parent do |parent_form_builder| %>
  <%= parent_form_builder.text_field :name %>
  <% parent.children.each_with_index do |child, index| %>
    <% parent_form_builder.fields_for :children, child do |child_form_builder| %> 
      <%= child_form_builder.select :age, (0..99).to_a %>
      <%# generates "parent[:children_attributes][index][age]" as name for the input %>
    <% end %>
  <% end %>
  <%= f.submit %>
<% end %>

clm-a

Array.prototype.shuffle = function( b ) {
 var i = this.length, j, t;
 while( i ) {
  j = Math.floor( ( i-- ) * Math.random() );
  t = b && typeof this[i].shuffle!=='undefined' ? this[i].shuffle() : this[i];
  this[i] = this[j];
  this[j] = t;
 }
 return this;
};

clm-a

Hash.new { |h, k| h[k] = Hash.new(&h.default_proc) }

clm-a

# following DOES match "foobar", "fooadmin", "adminbar", "fooadminbar" but not "admin" as a whole word :
/^((?!\badmin\b)[^\s]*)$/


# more reserved keywords :
/^((?!\badmin\b|\bteam\b)[^\s]*)$/

# http://www.regular-expressions.info/wordboundaries.html
# http://www.regular-expressions.info/lookaround.html

clm-a

# http://rubyquicktips.tumblr.com/post/4601358354/using-try-with-a-hash-to-check-existence-of-a-key

hsh = { :existing_key =>
            {
               :existing_sub_key => :value
            }
      }

hsh.try(:[], :existing_key).try(:[], :existing_sub_key)
# => :value

clm-a

"toto\ntiti".lines.map{|l| l.strip}.to_a.join(", ")

clm-a

element.addEventListener('touchstart', function(e) {
    e.preventDefault();
}, false);
element.addEventListener('touchmove', function(e) {
    e.preventDefault();
}, false);

clm-a

# from http://stackoverflow.com/a/647451


git symbolic-ref HEAD refs/heads/newroot
git rm --cached -r .
git clean -f -d

# then you apply the same steps
git commit --allow-empty -m 'root commit'
git cherry-pick $(git rev-list --reverse master | head -1)

clm-a

# Playing with classes and structs

MyClass = Class.new

p MyClass.class

# => Class

my_instance = MyClass.new