That's strange, this is what I get in the REPL when evaluating that
expression:
$ clj
Clojure 1.9.0
user=> (. clojure.lang.Numbers (add 10 100))
110
user=>
On Wednesday, November 7, 2018 at 10:01:20 AM UTC+1, Didier wrote:
>
> Hey, thanks for the deep dive, but I'm not sure I either understand, or
> that it is correct.
>
> So what we end up with is the equivalent to analyzing the expression `(.
>> clojure.lang.Numbers (add 10 100))`.
>>
>
> When I run my example, I get:
>
> ClassCastException clojure.lang.Symbol cannot be cast to java.lang.Number
> clojure.lang.Numbers.add
>
> When I macroexpand-1 my example, I also get the same ClassCastException.
>
> But if we follow your step by step, you make it sound like it would work
> and return 110.
>
> So at which step would this exception be thrown? And why?
>
>
> On Thursday, 15 March 2018 11:11:24 UTC-7, Didier wrote:
>>
>> I was hoping that ^:const would be able to inline any symbol value and
>> that it would do so before macroexpanssion so that:
>>
>> (def ^:const bar {:a 100})
>>
>> (defmacro foo
>> [x]
>> (:a x))
>>
>> (foo bar)
>>
>> Would return:
>>
>> 100
>>
>> The same way that:
>>
>> (foo {:a 100})
>>
>> does.
>>
>> Then I read that ^:const only inlines primitive values (which
>> disappointed me), but so I thought that this would work:
>>
>> (def ^:const bar 100)
>>
>> (defmacro foo
>> [x]
>> (+ 10 x))
>>
>> (foo bar)
>>
>> but that also doesn't work.
>>
>> So now I believe that ^:const inlines after macroexpanssion.
>>
>> I feel it would be really cool to be able to factor some input to macros
>> into constants, is this something I could open a ticket for, to extend
>> ^:const so it can inline all literal values and also does the inlining
>> before macroexpanssion so that the above would work?
>>
>
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