module Stocks

Raises an exception if the provided symbol does not exist.

Args¶ ↑

• symbol The symbol to evaluate for existence

Raises¶ ↑

• RetrievalError If the provided symbol does not exist

# File lib/stocks.rb, line 35
def self.exists!(symbol)
  raise RetrievalError.new(symbol) if !Stocks.exists?(symbol)
end

Determines whether or not the provided symbol exists.

Args¶ ↑

• symbol The symbol to evaluate for existence

Returns¶ ↑

Whether or not the provided symbol exists

# File lib/stocks.rb, line 24
def self.exists?(symbol)
  symbol.upcase!
  EXISTS_CACHE.fetch(symbol) { !Quote.get(symbol)[symbol][:date].nil? }
end