Use case

When you have an API that doesn't start and doesn't show an error log.

Solution

Update the web.config and set the ASPNETCORE_DETAILEDERRORS environment variable to true .

Download•Share < system.webServer > < httpErrors errorMode = " Detailed " /> < aspNetCore processPath = " dotnet " > < environmentVariables > < environmentVariable name = " ASPNETCORE_DETAILEDERRORS " value = " true " /> </ environmentVariables > </ aspNetCore > </ system.webServer >

Use case

You want to periodically the refresh data in the NgRx Store.

Solution

Create a NgRx Effect that retrieves the data via a service every x minutes, this can be done with the RxJS timer operator.

Download•Share refresh$ = createEffect ( ( ) => { return timer ( 0 , 600000 ) . pipe ( switchMap ( ( ) => this . customersService . get ( ) . pipe ( map ( ( data ) => refreshSuccess ( data ) ) , catchError ( ( response ) => refreshFailed ( response ) ) , ) , ) , ) } )

Use case

I want to delete a property from an object in a pure (immutable) way.

Solution

Use a destructuring assignment to assign the to be removed property to a variable, while cloning the "rest" properties to a new variable. The _ is used to prevent a linter giving the warning "variable is declared but its value is never read".

Download•Share const { password : _ , ... user } = { id : 47 , username : 'tim' , password : 'iliketrains' , } console . log ( user )

For more examples see Destructuring assignment on MDN

Use case

An action to fetch multiple entities at once, but the service has only an endpoint to fetch one entity at a time.

Solution

Use the RxJS merge operator to flatten all request streams and concurrently emit all values to a single output stream.