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ReactPerformance & rendering

Memoize a component with stable props

Memoize a component with stable props with a small React component and explicit browser behavior.

React✓ Tested
ReactPerformance & rendering

Memoize a derived collection

Memoize a derived collection with a small React component and explicit browser behavior.

React✓ Tested
ReactPerformance & rendering

Memoize a sorted copy of state

Memoize a sorted copy of state with a small React component and explicit browser behavior.

React✓ Tested
ReactPerformance & rendering

Memoize an object passed to a provider

Memoize an object passed to a provider with a small React component and explicit browser behavior.

React✓ Tested
ReactPerformance & rendering

Mount expensive content only when requested

Mount expensive content only when requested with a small React component and explicit browser behavior.

React✓ Tested
jQueryInsertion & wrapping

Move a node without losing its event handler

jQuery: detach retains jQuery data and events for reinsertion.

jQuery✓ Tested
AngularTemplates & bindings

Name a template expression with @let

Name a template expression with @let with a standalone Angular component and explicit browser behavior.

Angular✓ Tested
JavaRecords & reliable control flow

Narrow an object with a pattern variable

Java: Pattern matching avoids a separate cast after a successful instanceof check.

Java✓ Tested
ReactGetting Started

Nest a reusable component

Nest a reusable component with a small React component and explicit browser behavior.

React✓ Tested
AngularComponents & communication

Normalize an input with a transform

Normalize an input with a transform with a standalone Angular component and explicit browser behavior.

Angular✓ Tested
ReactComponents & props

Notify a parent with a callback prop

Notify a parent with a callback prop with a small React component and explicit browser behavior.

React✓ Tested
C#Asynchronous work & URI handling

Observe cancellation through a token

C#: A cancellation token is cooperative; operations must check it or accept it as an argument.

C#✓ Tested