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debug_master29
·
TypeScript or JavaScript type casting: how to properly convert data?
Hello everyone! I'm new to TypeScript and can't figure out type casting. In JavaScript, I'm used to using simple constructs like `String(value)` or `Number(value)`, as well as double negation `!!value` for boolean. But when I started writing in TypeScript, I got confused by constructs with `as` and angle brackets ``.
For example, I have this code:
```typescript
const data: any = fetchDataFromAPI(); // Returns any
const user = data as User; // What does this mean?
```
I don't understand the difference between `as` and regular JavaScript casting. Are both methods safe? And when should I use `as`, and when is it better to use standard JavaScript functions?
Also, I often see people write:
```typescript
const count = someValue as number;
```
But if
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