Multiple named arguments Toit #help

Multiple named arguments

addshore

04/16/2025, 11:01 AM

I was thinking of doing sometihng like this

constructor action/Lambda --then/Lambda?=null:

But I would want to be able to call it with multiple named arguments Such as

foo --then=(::print foo) --then=(::print bar)

However this isn't possible in toit, what would the closest thing be? Or is there an example of fluid / chained function calls

addshore

04/16/2025, 11:02 AM

I was kind of aiming for something like this

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awaitAll
    Promise (:: print "Hello")
      .then (:: print "Hello again")

And got distracted by trying named arguments while realizing that this stuf of indenting doesnt work for the chaining

addshore

04/16/2025, 11:05 AM

maybe I should be trying chaining with blocks though

addshore

04/16/2025, 1:19 PM

TLDR: I was hoping for something like this, but Ic ant seem to ake it work any way aroud I try 🙂

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Promise (:: print "Hello 1")
    .then (:: print "Hello 2")
    .then (:: print "Hello 3")
    .then (:: print "Hello 4")
    .await

addshore

04/16/2025, 1:21 PM

I could probably also create a similar pattern with variadics, but no variadics in toit either as far as I can see

floitsch

04/17/2025, 6:13 AM

chaining doesn't really work well in Toit, and we thus don't use it really in our APIs. (And that comes from the creators of the Dart lib, which "breathes" it...) There is also no way to have the same named argument multiple times (or variadic functions). I would probably take a list instead.

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Promise [
  :: print "Hello 1",
  :: print "Hello 2",
  ...
]

addshore

04/17/2025, 9:40 AM

I was going to give lists a go but figured I'd wait for your thoughts first 🙂 So I'll try that out today

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