templating opEquals/opCmp (e.g. for DSL/expression templates)

[Jacob Carlborg]

On 2019-02-12 12:35, Nicholas Wilson wrote:

> The use case is e.g. building a DB query predicate where == still means 
> equality not e.g. I/O, it just isn't evaluated directly. The fact is you 
> can already use it for arithmetic to build e.g. linear algebra 
> expression templates, and you can use == predicates but not != or any of 
> the ordering comparisons is inconsistent arbitrary and annoying.

I like it. I would like to be able to do this with DB queries as well. 
The alternative would be AST macros, but that is not likely to be 
accepted either.

-- 
/Jacob Carlborg