Well, I finally ran into a Python Unicode problem, sort of
Lawrence D’Oliveiro
lawrencedo99 at gmail.com
Sun Jul 3 20:24:57 EDT 2016
On Monday, July 4, 2016 at 12:17:47 PM UTC+12, BartC wrote:
>
> On 04/07/2016 01:00, Lawrence D’Oliveiro wrote:
>>
>> On Monday, July 4, 2016 at 11:47:26 AM UTC+12, eryk sun wrote:
>>>
>>> Python lacks a mechanism to add user-defined operators. (R has this
>>> capability.) Maybe this feature could be added.
>>
>> That would be neat. But remember, you would have to define the operator
>> precedence as well. So you could no longer use a recursive-descent parser.
>
> That wouldn't be a problem provided the new operator symbol and its
> precedence is known at a compile time, and defined before use.
That is how it is normally done. (E.g. Algol 68.)
But you still couldn’t use a recursive-descent parser.
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