Support for prefix lists in ns?

[Tom Locke]

Are prefix lists supported in ClojureScript's (ns ...)?

It seems not, unless I am misunderstanding the syntax. e.g.

(ns my.namespace (:require (foo [baa baz]))

should be equivalent to

(ns my.namespace (:require [foo.baa] [foo.baz])

but gives a compiler error "Only :as alias and :refer (names) options supported in :require"

Is this expected?

Thanks

Tom

[David Nolen]

It's not supported. ClojureScript's ns form is a restrictive subset of the functionality provided in Clojure. This is a good thing, what's there already involves an amazing amount of complexity.

David

Tom

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[Tom Locke]

Fair enough.

Are there any tips for reducing the size of large ns forms?

For example I have a util namespace, and I consider the functions in there part of my core vocabulary, alongside all the regular core functions and macros. I don’t want to see them with a namespace prefix in my code. Given the lack of refer :all, I end up with a long refer list which I frequently have to maintain. Is there any way around this?

Thanks

Tom

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[David Nolen]

There is no way around this.

David

[Francis Avila]

Would you reject a patch which adds (only) prefix lists to the ns form, or is this a feature you never want to see in ClojureScript?

(Not that I'm going to rush out and write one: just want to know your stance here.)

[David Nolen]

Further enhancements to the ns form are the very lowest priority. People can submit patches but they are unlikely to get any attention anytime soon.

David

[Colin Fleming]

As someone who has to parse and manipulate ns forms, prefix lists are one of the most annoying things to have to deal with. They make adding and removing requires to an ns form using a minimal diff very difficult. I'd love it if Clojure adopted the more opinionated ns form of CLJS.

[Stuart Sierra]

On Friday, February 20, 2015, Colin Fleming wrote:
> As someone who has to parse and manipulate ns forms,
> prefix lists are one of the most annoying things to
> have to deal with.

As the maintainer of tools.namespace, I agree completely. :)