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module Gitlab
module Utils
module StrongMemoize
# Instead of writing patterns like this:
#
# def trigger_from_token
# return @trigger if defined?(@trigger)
#
# @trigger = Ci::Trigger.find_by_token(params[:token].to_s)
# end
#
# We could write it like:
#
# def trigger_from_token
# strong_memoize(:trigger) do
# Ci::Trigger.find_by_token(params[:token].to_s)
# end
# end
#
def strong_memoize(name)
ivar_name = "@#{name}"
if instance_variable_defined?(ivar_name)
instance_variable_get(ivar_name)
else
instance_variable_set(ivar_name, yield)
end
end
end
end
end
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