/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 vote132 views1 answer
When to test analysis
TypeScript
0 vote121 views1 answer
About half of divorced parents try to avoid each other after the divorce, creating a different set of rules for children to follow in each parent’s household. This type of parental interaction is called
TypeScript
0 vote155 views1 answer
React forwardref typescript
TypeScript
0 vote165 views1 answer
Restaurants near me
TypeScript
12 votes157 views2 answers
Angular No provider for HttpClient
TypeScript
2 votes146 views2 answers
Flutter run code every second
TypeScript
0 vote155 views1 answer
How to call a function in a macro with variadic arguments c++
TypeScript
24 votes139 views4 answers
Children type typescript react'
TypeScript
3 votes118 views1 answer
How to remove an entry from a dictionary python
TypeScript
1 vote159 views1 answer
Import exec ts
TypeScript