I had something like this in mind:
- There's a set of clojure.core vars that mean something (potentially)
expensive yet convenient, and default to true
- Neither library producers or consumers have ever to touch those
(unless they want fine-grained control for some specific var/context)
- When performing a release to clojars or central, Lein creates two
versions ("DEBUG", "NO-DEBUG"), in which the vars are set to true and
false, respectively
- Then library consumers can specify either [com.example/awesomelib *
"1.4.0"*], [com.example *"1.4.0-DEBUG"*], or [com.example *
"1.4.0-NO-DEBUG"*] in their :dependencies vector, in the corresponding
project.clj.
- If no version directive is specified, "DEBUG" would be chosen unless
specified otherwise in profiles.clj: {:user {:debug-dependencies false}}
Does it sound good enough?
On Friday, February 8, 2013 6:18:54 PM UTC+1, vemv wrote:
>
> Given that: a) fns can have names for debugging purposes, and b) data
> structures can have metadata, wouldn't it be a good idea to let let auto
> attach (where possible) the names of the bindings to their corresponding
> values?
>
> For example, the improved let I'm thinking of would translate this input:
>
> (ns my.namespace)
>
> (defn do-it
> (let [foo (fn [] (throw (Exception.)))
> bar {:hello (/ 0 0)}]))
>
> to:
>
> (ns my.namespace)
>
> (defn do-it
> (let [foo (fn foo [] (throw (Exception.)))
> bar ^{:origin :my.namespace/do-it$let$bar} {:hello (/ 0 0)}]))
>
> This could be used to increase the precision of the stack traces, or in
> IDEs/editors for locating the exact source of an exception.
>
> Do you see such a mechanism being incorporated to clojure.core/let -
> should I open a ticket?
>
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