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(ifconfig wlan 2>/dev/null || ifconfig en0) | grep inet | grep -v inet6 | awk '{print $2}' | sed 's/addr://g' |
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# based on Haversine formula | |
# http://en.wikipedia.org/wiki/Haversine_formula | |
distance = (lat1, lon1, lat2, lon2) -> | |
R = 6371 | |
a = 0.5 - Math.cos((lat2 - lat1) * Math.PI / 180) / 2 + Math.cos(lat1 * Math.PI / 180) * Math.cos(lat2 * Math.PI / 180) * (1 - Math.cos((lon2 - lon1) * Math.PI / 180)) / 2 | |
R * 2 * Math.asin(Math.sqrt(a)) |
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$.datepicker.regional['es'] = { | |
closeText: 'Cerrar', | |
prevText: '<Ant', | |
nextText: 'Sig>', | |
currentText: 'Hoy', | |
monthNames: ['Enero', 'Febrero', 'Marzo', 'Abril', 'Mayo', 'Junio', 'Julio', 'Agosto', 'Septiembre', 'Octubre', 'Noviembre', 'Diciembre'], | |
monthNamesShort: ['Ene','Feb','Mar','Abr', 'May','Jun','Jul','Ago','Sep', 'Oct','Nov','Dic'], | |
dayNames: ['Domingo', 'Lunes', 'Martes', 'Miércoles', 'Jueves', 'Viernes', 'Sábado'], | |
dayNamesShort: ['Dom','Lun','Mar','Mié','Juv','Vie','Sáb'], | |
dayNamesMin: ['Do','Lu','Ma','Mi','Ju','Vi','Sá'], |
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# Say you have a string field in the DB that needs to be order like numbers | |
#If you do the following... maybe its not what you want: | |
Document.order(:number).pluck(:number) | |
=> [ "1", "10591059616", "100", "2", "22"....] | |
# But if you do...: | |
Document.order("LENGTH(documents.number), number").pluck(:number) | |
=> ["1", "2", "22", "99", "100", "10591059616"...] |
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module W | |
def foo | |
"- Mixed in method defined by W\n" + super | |
end | |
end | |
module X | |
def foo | |
"- Mixed in method defined by X\n" + super | |
end |
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fibbonacci = Hash.new do |accumulator, index| | |
accumulator[index] = fibbonacci[index - 2] + fibbonacci[index - 1] | |
end.update(0 => 0, 1 => 1) | |
irb(main)> fibbonacci[100] | |
=> 354224848179261915075 |
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require 'rbconfig' | |
def os | |
@os ||= ( | |
host_os = RbConfig::CONFIG['host_os'] | |
case host_os | |
when /mswin|msys|mingw|cygwin|bccwin|wince|emc/ | |
:windows | |
when /darwin|mac os/ | |
:macosx |
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class Person | |
def self.new(name) | |
@cache ||= {} | |
@cache[name] ||= super(name) | |
end | |
def initialize(name) | |
@name = name | |
end | |
end |
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=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') |
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function shuffle(o){ | |
for(var j, x, i = o.length; i; j = Math.floor(Math.random() * i), x = o[--i], o[i] = o[j], o[j] = x); | |
return o; | |
}; |