Hash maps with no side effects

[bhaskarmelkani]

Hash maps with no side effects

TL;DR;

Create hash maps(without side effects) using Object.create(null)

Username

@bhaskarmelkani

Extra

[kurtextrem]

However, watch the performance: https://jsperf.com/object-create-null-vs-literal/27 Using ES6's Map might be even more performant.

[zenopopovici]

This should be merged. It's a good tip. :shipit:

[bhaskarmelkani]

Any update on this ?

[zenopopovici]

@loverajoel ?

[bhaskarmelkani]

Snooze :)

[0x1eef]

why does the example use let ? there's no reassignment, const feels more appropriate. a shout out to Map seems relevant here too. there's a shout at the very end, to Map and friends.

[zenopopovici]

Guys can we merge this? @loverajoel, @sjfkai, @neighborhood999, @aschelstraete

[sjfkai]

Looks good to me 👍

[0x1eef]

let isn't used anymore :+1:

[0x1eef]

oh, maybe you meant let is less confusing? could be, not sure. probably doesn't matter much. i think eventually, as browsers support 'const' and 'let' natively, optimisations might be applied if it is known a "variable" cannot be reassigned. so probably a good practice to not ask for reassignment if it is not needed.

[neighborhood999]

@r-obert Thanks for your explaining!

[zenopopovici]

Guys: I don't know exactly how the merge must be done, we should move ahead without Joel if he's not available.

[bhaskarmelkani]

I guess its not a big topic to discuss, so we should close(merge/not merge) and move forward. :)

[0x1eef]

:shipit: ⏲

[zenopopovici]

First time I merge a tip. Hopefully all goes well :)

[zenopopovici]

Some issues. Correcting them now.

[zenopopovici]

Success.

[bhaskarmelkani]

👍