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Promise nuggets

Introduction

  1. The simplest example
  2. Creating new functions
  3. Creating new functions
  4. The power of then - sync processing
  5. The power of then - async operations
  6. The first relief - when sync becomes async
  7. Safety of then - thrown errors
  8. Wrapping callback functions

Multiple operations

  1. Doing things in parallel (async.parallel)
  2. Doing things in series (async.waterfall)
  3. Complex task dependencies
  4. Parallel map (async.map)
  5. Series map (async.mapSeries)
  6. Concurrency level (async.mapLimit)

Advanced examples

  1. Context managers and transactions

Using deferred

  1. Promise-based timeouts