Results for &#x201C;Signals &amp; state&#x201D;

Count a rising edge with an interrupt

Arduino / C: RISING triggers when the input changes from low to high.

jQueryForm serialization & state

Delete a cached data entry

jQuery: removeData removes the jQuery cache value for the selected key.

jQuery✓ Tested

Dispatch a command through function pointers

Arduino / C: A small function table can map validated command indices to actions.

Drive the built-in LED low after turning it on

Arduino / C: digitalWrite changes the actual output level of a configured pin.

Find a sample range in one pass

Arduino / C: Initialize extrema from the first element of a nonempty array.

Find a value in a small lookup table

Arduino / C: A linear scan is simple and predictable for a small fixed array.

Generate and measure a short output pulse

Arduino / C: delayMicroseconds can create a short blocking pulse on an output pin.

Group related readings in a struct

Arduino / C: A struct keeps a sample’s fields together without dynamic allocation.

Keep a counter from wrapping at its maximum

Arduino / C: Increment only when the value is below its limit.

ReactContext & shared state

Override context in a nested section

Override context in a nested section with a small React component and explicit browser behavior.

React✓ Tested

Play a fixed digital output pattern

Arduino / C: A pattern table separates the output sequence from its timing.