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...in the debugging console: Understand your current position in the program Read local variables Call methods that are reachable from the current scope Switch into a full irb console and...

Move the program position one statement ahead Jump into the next method call Jump out of the current method call Exit debugging console and resume program

...in JavaScript (as opposed to the code we usually write in Ruby)? What are "callbacks" in JavaScript? Can you find examples for libraries that use callbacks to deal with asynchronicity...

...for libraries that use promises to deal with asynchronicity? How can you parallelize multiple calls of an async function? Exercises Judging asynchronous code Look at the following code: async function...