Do u happen to know
Object#instance_eval's brother,
Object#instance_exec ?? Here's a uninteresting way of coding wo
Object#instance_exec:
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| Someone = Struct.new(:name, :password)
greet = lambda do |someone|
puts "Hey %s, no worries, i won't tell anyone ur password is '%s' !!" % [
someone.name, someone.password
]
end
greet[Someone.new('Peter', 'aabbcc')]
# >> Hey Peter, no worries, i won't tell anyone ur password is 'aabbcc' !!
greet[Someone.new('Jane', 'bbccdd')]
# >> Hey Jane, no worries, i won't tell anyone ur password is 'bbccdd' !!
|
And here's a more interesting way to do it, w
Object#instance_exec:
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| Someone = Struct.new(:name, :password)
greet = lambda do
puts "Hey %s, no worries, i won't tell anyone ur password is '%s' !!" % [
name, password
]
end
Someone.new('Peter', 'aabbcc').instance_exec(&greet)
# >> Hey Peter, no worries, i won't tell anyone ur password is 'aabbcc' !!
Someone.new('Jane', 'bbccdd').instance_exec(&greet)
# >> Hey Jane, no worries, i won't tell anyone ur password is 'bbccdd' !!
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Yet another way to do it can be:
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| Someone = Struct.new(:name, :password)
greet = lambda{|msg| puts msg % [name, password] }
Someone.new('Peter', 'aabbcc').
instance_exec("Hey %s, no worries, i won't tell anyone ur password is '%s' !!", &greet)
# >> Hey Peter, no worries, i won't tell anyone ur password is 'aabbcc' !!
Someone.new('Jane', 'bbccdd').
instance_exec("Hey %s, i'm glad that u entrust me with ur password '%s' !!", &greet)
# >> Hey Jane, i'm glad that u entrust me with ur password 'bbccdd' !!
|
Enjoy !!
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