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July 18, 2011 23:10
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Ruby Fundamental - Hash em Ruby (parte I)
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even_numbers = {} # Cria um objeto hash vazio | |
even_numbers["zero"] = 0 # Atribui 0 como valor para a chave "zero" | |
even_numbers["two"] = 2 | |
even_numbers["four"] = 4 | |
even_numbers["two"] # Recupera 2 como valor |
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even_numbers = {} | |
even_numbers[:zero] = 0 | |
even_numbers[:two] = 2 | |
even_numbers[:four] = 4 |
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even_numbers = { :zero => 0, :two => 2, :four => 4 } |
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even_numbers = { zero: 0, two: 2, four: 4 } |
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misc_hash = { | |
:string => "Some text", | |
:number => 456, | |
:boolean => false, | |
:array => [0, 1, 2] | |
} |
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even_numbers = { :zero => 0, :two => 2, :four => 4 } | |
even_number.each do |key, value| | |
print "|#{key}: #{value}| " | |
end | |
# Imprime "|zero: 0| |two: 2| |four: 4| " |
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even_numbers = { :zero => 0, :two => 2, :four => 4 } | |
even_number.each_key { |key| print "#{key} " } | |
# Imprime "zero two four " | |
even_number.each_value { |value| print "#{value} " } | |
# Imprime "0 2 4 " |
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class OrdersController < ApplicationController | |
def payment | |
@order = Order.find_by_number params[:id] | |
@payment_method = PaymentMethod.find params[:payment_method_id] | |
# Alguma implementação | |
end | |
# Mais ações | |
end |
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class ShippingCalculator | |
def calculate(weight, height, width, depth) | |
# Alguma implementação | |
end | |
end |
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class ShippingCalculator | |
def calculate(weight, dimensions = {}) | |
# Alguma implementação | |
end | |
end | |
dimensions = { :height => 0.75, :width => 1.00, :depth => 0.10 } | |
calc = ShippingCalculator.new | |
calc.calculate 1.50, dimensions |
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