Class: Radio

Inherits:
Object
  • Object
show all
Defined in:
lib/radio.rb

Constant Summary collapse

MAX_VOLUME = 
100
MIN_VOLUME = 
0
@@brand = 
'SONY_DALIAN'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(volume = 3) ⇒ Radio

attr_writer :volume attr_accessor :volume



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# File 'lib/radio.rb', line 12

def initialize(volume = 3)
  @volume = volume
end

Instance Attribute Details

#volume ⇒ Object

Returns the value of attribute volume.



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# File 'lib/radio.rb', line 8

def volume
  @volume
end

Class Method Details

.brand ⇒ Object 



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# File 'lib/radio.rb', line 28

def self.brand
    @@brand
end

.hack ⇒ Object 



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# File 'lib/radio.rb', line 49

def hack
    puts 'I hacked in the radio'
end

.wave_band ⇒ Object 



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# File 'lib/radio.rb', line 34

def wave_band
    '100.8'
end

Instance Method Details

#volume_to_1000 ⇒ Object 



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# File 'lib/radio.rb', line 24

def volume_to_1000
    self.volume = 1000       #调用的是volumn= 方法, 不是直接给@volume赋值
end