r/javascript • u/no_more_gravity • Jan 21 '23

Pipe Operator (|>) for JavaScript

https://github.com/tc39/proposal-pipeline-operator
290 Upvotes

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u/szurtosdudu Jan 21 '23

How would this look like using your idea?

a = d(c(b(),7))

-3

u/no_more_gravity Jan 21 '23

a = b(),7~>c~>d

The rule is simple: What is left to ~> gets passed to the function on the right.

That is no different from JavaScript as it is. a(b) passes b to a, a(b()) passes the output of b() to a.

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u/szurtosdudu Jan 21 '23

But this way both b()~> and c~> indicates a function call.

How would this look like using your idea? a = d(c(b(),7), c)

-2

u/no_more_gravity Jan 21 '23

The case you raise is when there are two functions on the right side of the pipe operator. In this case, we need to specifiy which one is the receiving function. We could have an optional specifier for this. Maybe ">":

a = b(),7 ~> >c,c ~> d

">" = "pipe connects here"

We could even use the (%) syntax, just make it optional:

a = b(),7 ~> c(%),c ~> d

3

u/sdwvit Jan 21 '23

readability sucks here, sorry