- LWC: debounce a lightning-input Stop hammering the server on every keystroke — 300 milliseconds of patience per search box. JavaScript
- Flow formula: business days between dates No Apex, no loops — one formula resource that counts weekdays between two dates. Flow
- SOQL: accounts with no contacts The anti-join: records missing children, without a report type gymnastics session. SOQL
- SOQL: records modified since yesterday Relative date literals beat hand-built timestamps every time — and they respect the user's time zone. SOQL
- Test data factory, the minimal version One class, builder-style defaults, no framework — the 80% of a test factory most orgs actually need. Apex
- Bulk-safe trigger handler skeleton The five-method handler shape that survives 200-record batches — collect, query once, map, loop, DML once. Apex