Build a Screener
Narrow a whole market down to a shortlist you can defend — by rebuilding your watchlist rather than starting again, and by learning to review the code you were handed.
Start here
What you are building, and why not from zero
Start the first lessonUnit 1 Plan the Rebuild
- What you are building, and why not from zero
- Read the universe, and find out what is in it
- Your first screen, through the proxy
- What a screener cannot tell you
Practice Check · Unit 1 A short check · cannot be failed Start
Unit 2 Rebuild It
- Pull the data layer out of the watchlist
- One table, two products
- Filters as data, and never trusting the input
- Saved screens — the criteria you keep coming back to
Practice Check · Unit 2 A short check · cannot be failed Start
Unit 3 Code Review as a Process
- A review checklist you can actually run
- Reviewing for leaks
- Reviewing for cost
- Reviewing for numbers that lie
- The review that runs itself
Practice Check · Unit 3 A short check · cannot be failed Start
Unit 4 Make It Real, and Ship It
- From a list to a shortlist you can defend
- The breadth wall
- Ship it beside the watchlist
- What you can now do, and what the exam checks
Practice Check · Unit 4 A short check · cannot be failed Start
Last Course exam
One exam, the whole course Unlocks when you have read all 17 lessons
Passing it earns the course certificate. It also counts toward the Builder track (course 10 of 13): pass every course exam in a track to earn its track certificate.