Module: ECB::CurrencyConverter

Defined in:
lib/ecb/currency_converter.rb,
lib/ecb/currency_converter/version.rb

Overview

:nodoc:

Constant Summary collapse

DAILY_URI = 
'http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml'
CURRENCIES = 
[
  'AUD', # Australian Dollar (A$)
  'BGN', # Bulgarian Lev (BGN)
  'BRL', # Brazilian Real (R$)
  'CAD', # Canadian Dollar (CA$)
  'CHF', # Swiss Franc (CHF)
  'CNY', # Chinese Yuan (CN¥)
  'CZK', # Czech Republic Koruna (CZK)
  'DKK', # Danish Krone (DKK)
  'EUR', # Euro (€)
  'GBP', # British Pound Sterling (£)
  'HKD', # Hong Kong Dollar (HK$)
  'HRK', # Croatian Kuna (HRK)
  'HUF', # Hungarian Forint (HUF)
  'IDR', # Indonesian Rupiah (IDR)
  'ILS', # Israeli New Sheqel (₪)
  'INR', # Indian Rupee (Rs.)
  'JPY', # Japanese Yen (¥)
  'KRW', # South Korean Won (₩)
  'LTL', # Lithuanian Litas (LTL)
  'LVL', # Latvian Lats (LVL)
  'MXN', # Mexican Peso (MX$)
  'MYR', # Malaysian Ringgit (MYR)
  'NOK', # Norwegian Krone (NOK)
  'NZD', # New Zealand Dollar (NZ$)
  'PHP', # Philippine Peso (Php)
  'PLN', # Polish Zloty (PLN)
  'RON', # Romanian Leu (RON)
  'RUB', # Russian Ruble (RUB)
  'SEK', # Swedish Krona (SEK)
  'SGD', # Singapore Dollar (SGD)
  'THB', # Thai Baht (฿)
  'TRY', # Turkish Lira (TRY)
  'USD', # US Dollar ($)
  'ZAR', # South African Rand (ZAR)
]
VERSION = 
'0.1.0'

Class Method Summary collapse

Class Method Details

.exchange(value, from, to) ⇒ Object

Converts the value between from and to currencies.

Example

ECB::CurrencyConverter.exchange(100, 'EUR', 'USD')
=> 133.73999999999998

ECB::CurrencyConverter.exchange(100, 'USD', 'EUR')
=> 74.77194556602363



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# File 'lib/ecb/currency_converter.rb', line 65

def exchange(value, from, to)
  value * rate(from, to)
end

.rate(from, to) ⇒ Object

Return the exchange rate between from and to currencies.

Example

ECB::CurrencyConverter.rate('EUR', 'USD')
=> 1.3374

ECB::CurrencyConverter.rate('USD', 'EUR')
=> 0.7477194556602363



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# File 'lib/ecb/currency_converter.rb', line 78

def rate(from, to)
  load_data!
  validate(from, to)

  1.0 / @euro[from] * @euro[to]
end