ivansvlv
Programming Ruby 3.2 (5th Edition): missing interpolation in 'get_tax' return string (page 92)
In this class get_tax method return string is missing interpolation for the @name instance variable.
class TaxCalculator
def initialize(name, &block)
@name, @block = name, block
end
def get_tax(amount)
"#@name on #{amount} = #{ @block.call(amount) }"
end
end
Should be:
def get_tax(amount)
"#{@name} on #{amount} = #{ @block.call(amount) }"
end
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noelrappin
Author of Modern Front-End Development for Rails
No problem at all, the syntax being used is quite rare in practice, and probably should be changed – good catch, thanks!
Noel
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