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Results for “Signals & state”

Small, practical examples. Search by task or narrow things down below.

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SQLBulk changes & set operations

Update several classifications in one statement

SQL: A CASE expression computes the new value for each row covered by the update predicate.

SQL✓ Tested
SQL ServerBulk changes & set operations

Update several classifications in one statement

SQL Server: A CASE expression computes the new value for each row covered by the update predicate.

SQL Server✓ Tested
PostgresBulk changes & set operations

Update several classifications in one statement

Postgres: A CASE expression computes the new value for each row covered by the update predicate.

Postgres✓ Tested
SQLiteBulk changes & set operations

Update several classifications in one statement

SQLite: A CASE expression computes the new value for each row covered by the update predicate.

SQLite✓ Tested
ReactGetting Started

Update state from its previous value

Update state from its previous value with a small React component and explicit browser behavior.

React✓ Tested
ReactContext & shared state

Update state shared through context

Update state shared through context with a small React component and explicit browser behavior.

React✓ Tested
Arduino / CArrays & embedded state

Use named states for a controller

Arduino / C: An enum makes state transitions easier to read than unexplained numbers.

Arduino / C✓ Tested
C++Tasks & synchronization

Wait for shared state with a condition variable

C++: Use a predicate so spurious wakeups cannot allow the worker to continue before the state is ready.

C++✓ Tested
Arduino / CArrays & embedded state

Advance an index around a fixed collection

Arduino / C: Modulo wraps a bounded nonnegative index to zero.

Arduino / C✓ Tested
jQueryForm serialization & state

Check native form validity before proceeding

jQuery: Use the native checkValidity API from the selected form.

jQuery✓ Tested
ReactContext & shared state

Choose labels from a language context

Choose labels from a language context with a small React component and explicit browser behavior.

React✓ Tested
jQueryForm serialization & state

Collect repeated form field names

jQuery: serializeArray preserves multiple values as name-value records.

jQuery✓ Tested