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AJ ONeal
bb488fe230
Ensure cohort is never nil: - NewDomainSet stores an empty Cohort before rebuildCohort, so a parse failure leaves an empty (non-nil) cohort instead of nil - Contains uses CompareAndSwap to lazily self-initialise a zero-value struct, making nil impossible after first access — no explicit nil check needed Extract the cache-validity check into a testable cachedCohortValid() helper and add filesPresent() to detect when data files exist on disk. Use strings.Builder in commaify() for efficiency. Tests: - TestPrefixSetContainsZeroValue: zero-value self-heals via CAS, cohort is non-nil after first Contains call - TestCachedCohortValidRequiresFiles: cache invalidation logic
golib
Sometimes a little copying, sometimes a little dependency. Too small for their own repos.
The default branch is dev, but the stable, versioned tags are based on main.
Also, my Go Cheatsheet: