Sha256: 2f8ad2e4637cbc4087c6e007701abe4d31184738a97b1118f475f55258b75c84
Contents?: true
Size: 1.9 KB
Versions: 4
Compression:
Stored size: 1.9 KB
Contents
module Exchange
# The conversability module which will get included in Fixnum and Float, giving them the in currency instantiate methods
# @author Beat Richartz
# @version 0.10
# @since 0.1
#
module Conversability
# The in method instantiates a money object from a numeric type.
# @param [Symbol] currency the currency to instantiate the money with
# @param [Hash] options The options to instantiate the currency with
# @option [Time] :at The time for which the currency should be instantiated
#
# @example Instantiate from any type of number
# 40.in(:usd) => #<Exchange::Money @value=40 @currency=:usd>
# -33.in(:nok) => #<Exchange::Money @value=-33 @currency=:nok>
# 33.333.in(:sek) => #<Exchange::Money @value=33.333 @currency=:sek>
# @example Instantiate and immediatly convert
# 1.in(:usd).to(:eur) => #<Exchange::Money @value=0.79 @currency=:eur>
# 1.in(:nok).to(:chf) => #<Exchange::Money @value=6.55 @currency=:chf>
# -3.5.in(:chf).to(:dkk) => #<Exchange::Money @value=-346.55 @currency=:huf>
# @example Instantiate and immediatly convert at a specific time in the past
# 1.in(:usd).to(:eur, :at => Time.now - 86400) => #<Exchange::Money @value=0.80 @currency=:eur>
# 1.in(:nok).to(:chf, :at => Time.now - 3600) => #<Exchange::Money @value=6.57 @currency=:chf>
# -3.5.in(:dkk).to(:huf, :at => Time.now - 172800) => #<Exchange::Money @value=-337.40 @currency=:huf>
#
# @since 0.1
# @version 0.10
#
def in currency, options={}
if ISO4217.currencies.include? currency
Money.new(self, currency, options)
else
raise Exchange::NoCurrencyError.new("#{currency} is not a currency")
end
end
end
end
# include the Conversability methods in all number operations. Stack traces will indicate the module if something goes wrong.
Numeric.send :include, Exchange::Conversability
Version data entries
4 entries across 4 versions & 1 rubygems