rodrigosoares

# max_tasks returns the maximum number of tasks the system can take
# tasks: an array of unordered task weights
# limit: the maximum load of tasks
# the "context switching" difference between the tasks must be considered
# i.e.: current is 24, next is 23, so the context switching is 1

def max_tasks(tasks, limit)
  sorted_tasks = tasks.sort
  last = sorted_tasks.first 
  acc = limit

rodrigosoares

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

rodrigosoares

hostname h1
password routeflow
enable password routeflow
!
router bgp 1000
  bgp router-id 172.31.1.100
  network 172.10.0.0/16
  neighbor 172.36.1.2 remote-as 6000
  neighbor 172.37.1.2 remote-as 7000
  neighbor 172.31.1.1 remote-as 1

rodrigosoares

module Math
  # Erlang-B loss formula returns the probability of call losses for a group of
  # identical resources. It uses an auxiliary function 'bloq'. Parameters:
  # ndv = number of trunks in full availability group
  # gos = grade of service
  def self.erlangb(ndv, gos)
    ndv_aux = ndv
    incr = ndv / 2.0
    while incr > 0.0000001
      if bloq(ndv, ndv_aux) > gos

rodrigosoares

class String
  def to_bool
    return true if self == true || self =~ (/^(true|t|yes|y|1)$/i)
    return false if self == false || self.blank? || self =~ (/^(false|f|no|n|0)$/i)
    raise ArgumentError.new("invalid value for Boolean: \"#{self}\"")
  end
end

class Fixnum
  def to_bool

rodrigosoares

HTTP status code symbols for Rails

Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

Status Code Symbol
1xx Informational
100 :continue
101 :switching_protocols
102 :processing

rodrigosoares

# Distance units (miles)
AU         = 93_000_000.0
LIGHTYEAR  = 63241 * AU
PARSEC     = 3.26 * LIGHTYEAR

# Speed units (miles per second)
LIGHTSPEED = 186_000

# Time units (seconds)
MINUTE     = 60