Reassigned closure variables slow Julia model factories
Reassigned closure variables get boxed, making a multiple-dispatch model factory several times slower than a single definition.
Tier II · Emerging Problems that are still building up.
11 public reports · first reported 9 October 2026 · last reported 10 October 2026
What's going wrong
Julia users building model factories with multiple dispatch report that the code runs several times slower than when a single definition is used.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 11 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.