Sha256: 10edd873c27079aff0f1bddb2dcf4ff744251e7a8e4af41d1417e4e0c8bf12f7
Contents?: true
Size: 578 Bytes
Versions: 71
Compression:
Stored size: 578 Bytes
Contents
# Implements the +safe_reader+ class method which will define (or override) readers that
# raise if ivar is nil
module Tracksperanto::Safety
def self.included(into)
into.extend(self)
super
end
# Inject a reader that checks for nil
def safe_reader(*attributes)
attributes.each do | an_attr |
alias_method "#{an_attr}_without_nil_protection", an_attr
define_method(an_attr) do
val = send("#{an_attr}_without_nil_protection")
raise "Expected #{an_attr} on #{self} not to be nil" if val.nil?
val
end
end
end
end
Version data entries
71 entries across 71 versions & 1 rubygems