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remokasu/stacker: command-line RPN calculator with an RPN-based scripting language (on PyPI)

GitHub - remokasu/stacker: Stacker is a command-line calculator that uses reverse Polish notation (RPN) for mathematical calculations and features an RPN-based scripting language.

https://github.com/remokasu/stacker

Stacker is a command-line calculator that uses reverse Polish notation (RPN) for mathematical calculations and features an RPN-based scripting language.　 - remokasu/stacker

GitHub - remokasu/stacker: Stacker is a command-line calculator that uses reverse Polish notation (RPN) for mathematical calculations and features an RPN-based scripting language.

6 comments

pkill

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how does that compare to Hy besides being more domain specific and the order of operations (prefix vs suffix notation)?

Andy

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I've never used Hy. Does it offer any concatenative-style interaction?

pkill

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it's uses standard lispy operator-operands order see https://learnxinyminutes.com/docs/hy

Andy

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So it looks like a totally different data flow style, and (I think) geared toward writing then running programs, whereas Stacker is more for interactive stack-oriented calculator tasks.

pkill

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lisps are very repl-driven too

Andy

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I'd say an important part of this calculator's interaction model is doing something, getting a result, then doing something else to that result. That's not too bad in the regular Python interpreter either.

For example, in Python:

>>> 5
5
>>> 4 + _
9
>>> 2 * _
18

In Stacker:

>>> 5
[5]
>>> 4 +
[9]
>>> 2 *
[18]

Does Hy have something like the Python interpreter's _?