melezorus34

4y

I have just learnt that you can label for statements and break them in an inside loop

Wakanda crazy crap is this?

fyi here is an example:```js
outerLoop:for(let i = 0; i<5; i++){
for(let j=0; j<5; j++){
console.log(ij);
if(ij === 8) { break outerLoop;}
}
}
```
Why do we even set a label with a colon, why?

joke/meme

js

stew

Ranter

Comments

2

lorentz

14745

4y

This is just about the only use for this, unless you're iterating matrices you definitely don't need a nested loop in a single function.
0

kamen

7009

4y

@Lor-inc There are a lot of other uses for nested loops, i.e. comparing two arrays element by element. Of course you can use Array.map() and whatnot, but those are usually just abstracting away the fact that some kind of a loop is still used internally.
4

PrivateGER

16953

4y

What the fuck
No
Don't do that
1

lorentz

14745

4y

@kamen Use a method. Don't write ambivalent code and rely on your sense of what needs to be explained, create tiny methods and ensure that variable lifespan is the shortest possible.
1

Marl3x

2840

4y

@PrivateGER Svelte does this. Well, not really. They use this feature that absolutely nobody knows about to mark their variables syntactically, and because it's valid Javascript it will work even if not using their compiler. There is a talk about it on YouTube. I found it pretty fascinating.
3

PrivateGER

16953

4y

@Marl3x I know that, but why would you ever want to do *that*?

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