mayra-cabrera

Running something like

 bundle install --without nothing 

should clear the cache, not sure if it is recommended though. This is one seems a lot better

 rm .bundle/config

See this issue apparently it was already fix :D

mayra-cabrera

• Ubuntu: 14.10 utopic
• PostgreSQL 8.4, 9.0, 9.1, 9.2, 9.3, 9.4 beta

I started getting “Failed to fetch” error messages when updating the software sources:

Failed to fetch http://ppa.launchpad.net/pitti/postgresql

which may be due to a bug related to a clean up in Launchpad’s PPAs. After serveral hours -.-, Here is what I finally works

In the terminal open the file located at /etc/apt/sources.list.d

mayra-cabrera

true    ? "true" : "false"
false   ? "true" : "false"
nil     ? "true" : "false"
1       ? "true" : "false"
0       ? "true" : "false"
"false" ? "true" : "false"
""      ? "true" : "false"
[]      ? "true" : "false"

mayra-cabrera

class DummyClass

  def self.im_awesome
  end
  
  def my_awesome_method
  end
end
 
 

mayra-cabrera

# En cada uno de los ejemplos, ¿cuál es el valor final de 'a'?

# Ejemplo 1
a = nil
b = 2
a ||= b 

# Ejemplo 2
a = false
b = 2

mayra-cabrera

# Ejemplo 1
def mixed_args(a,b,*c,d)
  puts "Arguments:"
  p a,b,c,d
end  
# ¿Cuál es la salida de este método?
# mixed_args(1,2,3,4,5) 

# Ejemplo 2
def args_unleashed(a,b=1,*c,d,e)

mayra-cabrera

resources :posts do
  member do
    get 'comments'
  end
  collection do
    post 'mark_as_archived'
  end
end

# ¿Qué rutas genera?

mayra-cabrera

Suponiendo la siguiente información en una base de datos:

Employee

Id	name	organization_id
1	Kaitlin	1
2	Vidal	1
3	Eliza	2

mayra-cabrera

class Person
   attr_accessible :first_name, :last_name
   has_many :pets
end

class Pet
   attr_accessible :name, :person_id
   belongs_to :person
end

mayra-cabrera

I don't yet know why, but installing Mavericks removes some directories in /usr/local/var/postgres.

To fix this you simply recreate the missing directories:

mkdir /usr/local/var/postgres/pg_tblspc
mkdir /usr/local/var/postgres/pg_twophase
mkdir /usr/local/var/postgres/pg_stat_tmp

Or in one line: