Angular Observables and Promises: A Practical Guide to Asynchronous Programming by Abdelfattah Ragab

Available on https://shop.tredition.com and https://www.amazon.com

#angular #rxjs #observables #promises #resolve #reject #asyncawait #subscribe #hotobservables #coldobservables #behaviorsubject #subject #asyncpipe #rxjsoperators #handson #forkjoin #combinelatest #lastvaluefrom #merge #map #filter #take #debouncetime #exhaustmap #switchmap #catcherror #concatmap #mergemap #tap

Angular Observables and Promises: A Practical Guide to Asynchronous Programming

#Angular #Observables #Promises #Asynchronous #SwitchMap #forkJoin #exhaustMap

Project #6: Fetch and display weather based on the user’s location
#SwitchMap Operator
𝘨𝘦𝘵𝘓𝘰𝘤𝘢𝘵𝘪𝘰𝘯() method fetches the user's current location. It returns an 𝘖𝘣𝘴𝘦𝘳𝘷𝘢𝘣𝘭𝘦. Upon completion, the position coords are updated. Use the 𝘱𝘪𝘱𝘦 operator to chain operations on the Observable returned by 𝘨𝘦𝘵𝘓𝘰𝘤𝘢𝘵𝘪𝘰𝘯(). Use the 𝘴𝘸𝘪𝘵𝘤𝘩𝘔𝘢𝘱 operator to transform the void emission from 𝘨𝘦𝘵𝘓𝘰𝘤𝘢𝘵𝘪𝘰𝘯() into an Observable that fetches weather.
Find links to my work here:
𝗚𝗶𝘁𝗛𝘂𝗯: https://lnkd.in/dBmvynw8
#Angular

Higher-order mapping with RxJS:
- Maps a value (such as an id) to an Observable
- Automatically subscribes and unsubscribes from the inner Observable
- Flattens the result

More information here:

https://youtu.be/Ezos3zSgldU

#angular #rxjs #switchmap