24.02.20 02:27, Aaron Hall via Python-ideas пише:
I have no behavior for integers in mind. I would expect high-level libraries to
want to implement behavior for it.
- sympy
- pandas, numpy, sklearn, statsmodels
- other mathematically minded libraries (monadic bind or compose?)
To do this we need a name. I like `__sim__`. Then we'll need `__rsim__` and
`__isim__` for completeness. We need to make room for it in the grammar. Is it
ok to give it the same priority of evaluation as `+` or `-`, or slightly higher?
In the past we've made additions to the language when we've been parsing and
evaluating strings. That's what we're currently doing in statsmodels right now
because we lack the binary (in the sense of two-arguments) `~`.
See: https://www.statsmodels.org/dev/example_formulas.html
I still have no idea what this operator does.
You can use a function or a method:
sim(Lottery, Literacy + Wealth + Region)
Lottery.sim(Literacy + Wealth + Region)
or
sim(Lottery, Literacy) + Wealth + Region
Lottery.sim(Literacy) + Wealth + Region
Operators are used to simplify the code because virtually all know what
"+" and "/" mean. The same operators have similar meaning in different
programming languages and not only. And they are often used many times
in a row, like `a + b/(c+d)`.
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