/TypeScript/Typescript "variable?: type" notation

Typescript "variable?: type" notation

// the "last" property is optional and can be undefined
function printName(obj: { first: string; last?: string }) {  // ...}// Both OKprintName({ first: "Bob" });printName({ first: "Alice", last: "Alisson" });Try

Source: typescriptlang.org

Similar codes

0 vote221 views1 answer
The marking menu shortcuts to context-sensitive commands and tools. Marking menu accessed for objects:
TypeScript
0 vote176 views1 answer
Typescript getting started
TypeScript
-1 vote191 views1 answer
What was in Rome that helped Renaissance artists achieve their goal of Humanism?
TypeScript
1 vote236 views1 answer
Google sheets remove characters from string
TypeScript
0 vote234 views1 answer
When 2 emits on a same chatroom at a time only one is working using socket.io
TypeScript
0 vote180 views1 answer
Generics in arrow function
TypeScript
7 votes185 views5 answers
Reactnative typescript
TypeScript
0 vote187 views2 answers
Append contents of one file to another
TypeScript
0 vote190 views2 answers
Rstudio plots arrows(), text()
TypeScript
0 vote205 views1 answer
Stackoverflow ngbdate angular
TypeScript