Úvod
Podcasty
Věda a technika
Syntax - Tasty Web Development Treats
TypeScript Fundamentals × Narrowing, Discr...

Syntax - Tasty Web Development Treats
Wes Bos & Scott Tolinski - Full Stack JavaScript Web Developers
Věda a technika
TypeScript Fundamentals × Narrowing, Discriminating Unions, and Type Guards

Poslechněte si podcast
9. 5. 2022
22 min
In this Hasty Treat, Scott and Wes talk about TypeScript Fundamentals, including narrowing, discriminating unions, and type guards.
Sentry - Sponsor
If you want to know what’s happening with your code, track errors and monitor performance with Sentry. Sentry’s Application Monitoring platform helps developers see performance issues, fix errors faster, and optimize their code health. Cut your time on error resolution from hours to minutes. It works with any language and integrates with dozens of other services. Syntax listeners new to Sentry can get two months for free by visitingSentry.ioand using the coupon code TASTYTREAT during sign up.
Payments Hub - Sponsor
There are hundreds of payments processing companies out there. Hit updeveloper.paymentshub.com/syntaxto learn more about how Payments Hub Developers not only processes ecommerce and in-person payments, but also boards and underwrites your merchants in as little as 90 minutes. We are currently offering Syntax listeners who become new partners 6 months free data through our Business Reporting API!
Show Notes
- 00:24Welcome
- 01:35Sponsor: Sentry
- 02:23Sponsor: Payments Hub
- 05:21Intro to TypeScript fundamentals
- 06:28What is Type Narrowing?
- 09:32typeof
- 11:58instanceof
- 13:29Custom typeguards
- 16:12this is
- 17:59discriminated unions
Tweet us your tasty treats
- Scott’s Instagram
- LevelUpTutorials Instagram
- Wes’ Instagram
- Wes’ Twitter
- Wes’ Facebook
- Scott’s Twitter
- Make sure to include@SyntaxFMin your tweets