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- Does Typescript support the ?. operator? (And, whats it called?)
Yes As of TypeScript 3 7 (released on November 5, 2019), this feature is supported and is called Optional Chaining: At its core, optional chaining lets us write code where TypeScript can immediately stop running some expressions if we run into a null or undefined The star of the show in optional chaining is the new ? operator for optional property accesses Refer to the TypeScript 3 7
- What does the ampersand ( ) mean in a TypeScript type definition?
What does the ampersand ( ) mean in a TypeScript type definition? Asked 9 years, 4 months ago Modified 1 year ago Viewed 97k times
- What is TypeScript and why should I use it instead of JavaScript?
What is the TypeScript language? What can it do that JavaScript or available libraries cannot do, that would give me reason to consider it?
- In TypeScript, what is the ! (exclamation mark bang) operator when . . .
It tells TypeScript to leave the expressions result as it is and pass it to JavaScript It allows the use of JavaScript semantics in TypeScript, such as using loose equality (with the convenience of omitting all the checks) or using the (loose) inequality comparisons
- How do I dynamically assign properties to an object in TypeScript . . .
Learn how to dynamically assign properties to an object in TypeScript with this helpful guide
- typescript - What does the as keyword do? - Stack Overflow
The as keyword is a type assertion in TypeScript which tells the compiler to consider the object as another type than the type the compiler infers the object to be
- typescript - How can I define an interface for an array of objects . . .
Yes, your example of defining an interface only for the particular items would be a more useful way to do it It would be quite rare to have an array of items, but not want to conveniently reference a single item Using a real array also exposes length on the interface, which will probably be used quite often
- Is key-value pair available in TypeScript? - Stack Overflow
Is key-value pair available in TypeScript? If so, how do I do that? Can anyone provide sample, example, or links?
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