https://nalar.dev/tags/comparison/ Recent content in Comparison on Nalar Hugo en-us Thu, 10 Sep 2026 00:00:00 +0700 https://nalar.dev/compare-go-slices-lexicographically-with-slices-compare/ Thu, 10 Sep 2026 00:00:00 +0700 https://nalar.dev/compare-go-slices-lexicographically-with-slices-compare/ <p>Sometimes equality isn&rsquo;t enough. You may need to order version components, compare path segments, choose which byte sequence comes first, or sort records by a slice-valued key. Writing that comparison by hand is straightforward, but the prefix case and the meaning of the return value are easy places to introduce small bugs.</p> <p>For slices whose element type is ordered, <code>slices.Compare</code> provides the standard lexicographic comparison directly. It compares elements from left to right and, when all shared elements match, treats the shorter slice as smaller.</p> https://nalar.dev/compare-go-slices-with-custom-equality-using-slices-equalfunc/ Thu, 10 Sep 2026 00:00:00 +0700 https://nalar.dev/compare-go-slices-with-custom-equality-using-slices-equalfunc/ <p>Two slices can represent the same information without being directly comparable element by element. One side might contain structs while the other contains strings. Text may need case-insensitive comparison. IDs may arrive in different concrete types even though your application treats them as the same value.</p> <p>When equality depends on a rule rather than Go&rsquo;s <code>==</code> operator, <code>slices.EqualFunc</code> puts that rule in one place and handles the slice traversal for you.</p>