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# frozen_string_literal: true
require_relative "straw/version"
module Straw
class Error < StandardError; end
def self.logger
@logger ||= Logger.new($stderr, level: ENV.fetch("LOG_LEVEL", Logger::INFO)).tap do |x|
x.formatter = proc do |_severity, _datetime, _progname, message|
"[#{VERSION}] #{message}\n"
end
end
end
module Memoizable
def memoize(key)
if memoized?(key)
instance_variable_get(var_for(key))
else
instance_variable_set(var_for(key), yield)
end
end
def memoized?(key)
instance_variable_defined?(var_for(key))
end
private
def var_for(key)
"@#{key}"
end
end
end
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