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pwasm 0.2a0

Release: pwasm 0.2a0 pwasm is one of my folly projects - an entirely vibe-coded pure Python WebAssembly engine that I built in January during my first bout of AI mania . I hadn't touched it since January, so I decided to let Claude Opus 5.5 loose on it and see if it could make any significant improvements: Evaluate current state of pwasm - then consider what it would take to get the MicroPython…

We haven't written up this one. Simon Willison has the full story — the link below goes straight to it.

Read the original at simonwillison.net →

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Database Indexing & Query Performance

⚡ TL;DR: Understand why a query instant at 1,000 rows times out at 10 million. Use indexes where they help (and skip them where they hurt), read an EXPLAIN plan to see what the planner chose, and kill…

  • Orders table grew from 1,000 to 10 million rows
  • Database performed full scan instead of using index
  • Query performance degraded from instant to 8 seconds

An Icon API Should Be Able to Say “RTL Behavior Unknown

Right-to-left support creates an interesting problem for icon libraries. Some icons clearly depend on reading direction. Others clearly do not.

  • Right-to-left support complicates icon libraries, some icons need distinct RTL assets.
  • Icon aggregator must handle cases where RTL behavior is undocumented from various sources.
  • An API should return directionality metadata indicating source of information, not just direction.

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