# Expected Patterns > Match dynamic versions, dates, and names as expected values and inspect captured groups live. **Source:** [https://diff.svelte.page/examples/expected-patterns](https://diff.svelte.page/examples/expected-patterns) **Markdown mirror:** [https://diff.svelte.page/examples/expected-patterns.md](https://diff.svelte.page/examples/expected-patterns.md) --- This mirror preserves the prose, implementation notes, and runnable Svelte source behind the live example page. ## FIG-001: expected values. Named patterns distinguish intentional dynamic values from genuine edits. Successful matches get expected styling and structured captures; invalid formats remain visible as normal diffs. **Metadata:** tag: `PATTERNS` | groups: `3 named` | callback: `captures` ### Source #### ExpectedPatterns.svelte Source file: [src/lib/examples/expected-patterns/demos/ExpectedPatterns.svelte](https://github.com/humanspeak/svelte-diff/blob/main/docs/src/lib/examples/expected-patterns/demos/ExpectedPatterns.svelte) ```svelte
rendered diff
(captures = next ?? {})} rendererClasses={{ remove: 'diff-remove', insert: 'diff-insert', equal: 'diff-equal', expected: 'diff-expected' }} />
captures
{JSON.stringify(captures, null, 2)}
```