Who Wants to be a Ruby Engineer?
summary
A live Ruby game show runs runnable but unsafe snippets, uses multiple choice and pair program or search Stack Overflow lifelines, and demonstrates concrete surprises: calling :: on an Integer invokes its + method, the flip-flop operator skips 2..4 to print 1 and 5, not (!) calls a custom bang method so it returns "beep", bare parentheses evaluate to nil, named-capture regexes create local vars, proc.[] invokes a proc, for-loops leak the loop variable, and =~ versus ~ give 0 versus -1.
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chapters (17)
- 0:00Ruby game show welcome
- 0:20Host and rules
- 3:52Contestant Rock Davenport
- 8:09Global variable trick
- 9:14Contestant Dominic Rodriguez
- 11:41Contestant Christine
- 14:15Flip-flop operator
- 17:04Overriding bang method
- 19:22Contestant Thomas
- 22:39Nil from empty parentheses
- 24:50Question mark syntax
- 27:44Method with keyword args
- 31:43Loop variable scope
- 34:09Contestant Joelle
- 36:58Double ampersand keyword
- 39:30Contestant Joshua
- 42:22Closing remarks
