Using const/let instead of var can make JavaScript code run 10× slower in Webkit

Re:Using const/let instead of var can make JavaScript code r... by niq999 on Wednesday October 21, 2020 @01:17AM (#24844945)

I still have a silly dream that one day Javascript will split the numeric type into 32-bit floats and ints by default, like Ruby does. I wonder how much of the existing ecosystem that would break.

[ Parent | on HN ]

Re:Using const/let instead of var can make JavaScript code r... by ficklepickle on Wednesday October 21, 2020 @04:45AM (#24845941)

We've got various number types in array form: {u}int{8,16,32}, floats too.

I feel like that is about the best we can do without harming backwards compatibility. They are there when needed, but we are stuck with the ambiguous "number" type in general.

[ Parent | on HN ]

Re:Using const/let instead of var can make JavaScript code r... by spleen on Wednesday October 21, 2020 @01:38AM (#24845052)

They are actually 64-bit floats (doubles) and unlimited integers in Ruby.

[ Parent | on HN ]

Re:Using const/let instead of var can make JavaScript code r... by mmis1000 on Wednesday October 21, 2020 @01:58AM (#24845134)

And now JS also have unlimited integers

[ Parent | on HN ]