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