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ruby delete method

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Mateusz Drewniak answered on June 14, 2022 Popularity 8/10 Helpfulness 2/10

answer ruby delete method

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ruby delete method

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# How to delete instance methods

# define an empty class
class Foo; end

# show all instance methods of Foo defined directyl on it
p Foo.instance_methods(false) #=> []

# add the `bar` method
class Foo
  def bar
    puts "I'm Foo#bar!"
  end
end

p Foo.instance_methods(false) #=> [:bar]
Foo.new.bar #=> I'm Foo#bar!

# delete the method
Foo.undef_method(:bar)
p Foo.instance_methods(false) #=> []
Foo.new.bar #=> undefined method `bar' for #<Foo:0x0000000106c9ef80> (NoMethodError)

Popularity 8/10 Helpfulness 2/10 Language ruby

Source: Grepper

Tags: delete-method ruby

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Contributed on Jun 14 2022

Mateusz Drewniak

0 Answers Avg Quality 2/10

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health_nuts = ["walnuts","pecans","peanuts","cheeseburger","pistachios"]
health_nuts.delete("cheeseburger")
# => ["walnuts", "pecans", "peanuts", "pistachios"]

Popularity 8/10 Helpfulness 2/10 Language ruby

Source: Grepper

Tags: ruby

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Contributed on Oct 27 2022

rolewest

0 Answers Avg Quality 2/10

ruby delete method

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# How to delete class/singleton methods

# define an empty class
class Foo; end

# show all class/singleton methods of Foo
p Foo.singleton_methods #=> []

# add the `bar` method
class Foo
  def self.bar
    puts "I'm Foo::bar!"
  end
end

p Foo.singleton_methods #=> [:bar]
Foo.bar #=> I'm Foo::bar!

# delete the method
Foo.singleton_class.undef_method(:bar)
p Foo.singleton_methods #=> []
Foo.bar #=> undefined method `bar' for Foo:Class (NoMethodError)

Popularity 8/10 Helpfulness 1/10 Language ruby

Source: Grepper

Tags: ruby delete-method rub

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Contributed on Jun 14 2022

Mateusz Drewniak

0 Answers Avg Quality 2/10

ruby delete method

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