Ideas for improvement

[isaacg1]

This will be a thread for ideas for improvement of pyth:

Pyth eval/exec (not in safe mode)
Remove sets, make operations explicit.
bitwise operations
setwise operations
bagwise operations
operation on one location in a list. Like X, but an arbitrary operation.

[Maltysen]

Why not pyth eval in safe mode? Also, what are bags?

[isaacg1]

@Maltysen bags are like sets with multiplicity. .- uses them.
Pyth eval in safe mode should work, now that I think of it.

[Maltysen]

so like collections.Counter?

[isaacg1]

I haven't used that one, but it sounds about right. One difference is that bags usually don't allow negative counts, however.

[vendethiel]

Could .e be made to work with a pfn? a simple example j+.eG

[jakobkogler]

http://codegolf.stackexchange.com/questions/75335

It's really hard to split a sequence into pieces by a specific criterion.
Not really sure how a good solution should look like.
But a "split list by indices" function would be a good start. Like xG[1 5 should give ["a", "bcde", "fgh..."]

[isaacg1]

@jakobkogler That is the existing functionality of c. See here: https://pyth.herokuapp.com/?code=cG%5B1+5&debug=0

[jakobkogler]

Oh, right.

2016-03-11 9:02 GMT+01:00 isaacg1 [email protected]:

@jakobkogler https://github.com/jakobkogler That is the existing
functionality of c. See here:
https://pyth.herokuapp.com/?code=cG%5B1+5&debug=0

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#156 (comment).

[FliiFe]

Maybe a string compression algorithm for short strings (.Z actually outputs something longer for short strings. For example, it outputs a 23 byte long string for a 11 bytes long string). I'm thinking about something like smaz (see this). Could be the same way of working, but with a new token (§n .§, ...)

[jakobkogler]

@FliiFe Yeah, .Z is pretty bad. Don't think anybody ever used it.
But there is .", which compresses strings quite well.

[FliiFe]

Also, An issue I often come across, is that I can't find the list() constructor. And even cQk throws an error. The shortest I have found is :Q"."1

[isaacg1]

It looks like you're trying to convert a string to a list of characters. A couple of ways to do this are cQ1, which chops the string into pieces of length 1, and mdQ.

[FliiFe]

Oh, didn't think about them. Thanks! Another thing I've been thinking of, is a variable with default value 1

[jackHedaya]

Perhaps a way to write in Python and then have it converted to Pyth?

[isaacg1]

@jackHedaya That's very unlikely to ever be possible - the two languages are too different.

[jackHedaya]

I see... Perhaps better error displaying? For example showing at what point there is an error in terms of Pyth code.

[isaacg1]

@jackHedaya Could you give an example of the sort of thing you're thinking of?