Weirdest quirk of your main prog lang? - devRant

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15

metamourge

8426

5y

That's because parseInt takes two arguments.
It expects the 2nd argument to be the radix, but map passes the index instead.
Or in short, RTFM!!!
1

Ranchonyx

10654

5y

But why tho
1

AlgoRythm

50920

5y

This is NOT a quirk of JS, it's you misunderstanding the map function.

Here's your hit to why this happens:

['1','2','3'].map(function(){console.log(arguments)})
3

kamen

6995

5y

['1', '7', '11'].map(e => parseInt(e));

There, I fixed it.
1

soulevans07

871

5y

Oh I know full well why it does what it does... but still it's not a trivial mechanic even to seasoned JS developers.

You might call it quirky...
1

SortOfTested

20896

5y

@metamourge
See, if he was using webstorm, it would be screaming at him "USE THE RADIX, DERP"
1

kamen

6995

5y

@SortOfTested WebStorm is kind of too intrusive with things like this and IMO should relegate that to linters.
1

SortOfTested

20896

5y

@kamen
I don't disagree. Thankfully it's configurable.
1

c3r38r170

3769

5y

@kamen Arrow functions. <3
I will design an arrow function based lightsaber one day. You see, " =>{ " looks like the cut of a blade emitter.
(______)=>{-pshiuummmm->
1

PrivateGER

16813

5y

God fucking damn it
This bullshit again
This is the third time I see this here within ONE WEEK
READ THE GOD DAMN DOCUMENTATION OF parseInt!!!
1

soulevans07

871

5y

@PrivateGER, I did. You should read the comments before jumping to conclusions. I know what it does and why it does it but it's still a wierd line of code.

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