19 min
Same layout, new words
A re-export, a re-saved scan, redrawn shapes, a stamp on one page: five public PDF comparison tools each got at least one of them wrong. Perceptual hashes missed a rewritten line in the same layout.
Performance
3 posts.
12 min
Models guess optimizations well and prove them badly, so gotorque does the proving
An LLM proposes one Go patch per cycle. Isolated worktrees, a test gate the patch can't edit, 25 interleaved A/B pairs and a 407-line policy no model output can reach decide whether it survives.
12 min
A named return silently costs you Go's new append optimization
Go 1.27's runtimefreegc reaches 77 of 2,294 growing appends in the standard library. A temporary pointer rule blocks 224 more; the alias analysis never clears the other 1,994, and that is the gate nobody is lifting.