Episodes
almokhtar said about 1 year ago on Error Tracking from Scratch :
What a great tutorial never knew how error trackers were built ! 

Rocela Durazo said about 1 year ago on Error Tracking from Scratch :
Hey I learn a lot from this episode, thanks!

nice trick to get a positive number 
[source[1].to_i - 5, 0].max

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