[m-rev.] for review: use enum to identify impl defined literals

[Zoltan Somogyi]

2021-04-01 16:33 GMT+11:00 "Peter Wang" <novalazy at gmail.com>:
>> Also, would people object if I made the code that converts int, float
>> and string term functors to cons_ids actually check that they have
>> no arguments? Catching mistakes such as 8("abc") only during
>> typechecking generates not-all-that-helpful error messages
>> that complain about 8 not being a function.
> 
> I don't see why not, though I don't remember making that mistake before.

It turns out that such checks would never succeed. This diff documents this fact
at the relevant places.

Zoltan.
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