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perf: skip redundant downcase in Currency.find! on cache hits #521

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perf: skip redundant downcase in Currency.find! on cache hits #521

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10 changes: 7 additions & 3 deletions lib/money/currency.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -11,9 +11,13 @@ class UnknownCurrency < ArgumentError; end

class << self
def new(currency_iso)
raise UnknownCurrency, "Currency can't be blank" if currency_iso.nil? || currency_iso.to_s.empty?
iso = currency_iso.to_s.downcase
@@loaded_currencies[iso] || @@mutex.synchronize { @@loaded_currencies[iso] = super(iso) }
iso = currency_iso.to_s
return @@loaded_currencies[iso] if @@loaded_currencies.key?(iso)
raise UnknownCurrency, "Currency can't be blank" if iso.empty?
downcased = iso.downcase
@@mutex.synchronize do
@@loaded_currencies[iso] ||= @@loaded_currencies[downcased] ||= super(downcased)
end
end
alias_method :find!, :new

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