Re^6: Converting python list range expressions to perl

> OFFSET:LENGTH vs. OFFSET:OFFSET may be purely semantics.

doesn't seem so.

https://docs.python.org/3/glossary.html#term-slice

slice
An object usually containing a portion of a sequence. A slice is creat
+ed using the subscript notation, [] with 
colons between numbers when several are given, such as in variable_nam
+e[1:3:5]. The bracket (subscript) notation
uses slice objects internally.
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https://docs.python.org/3/library/functions.html#slice

class slice(stop)
class slice(start, stop, step=1)
Return a slice object representing the set of indices specified by ran
+ge(start, stop, step). The start and step 
arguments default to None. 

...
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something is off (-set ;) with this test suite. Unfortunately I have no Python at hand to test ...

updates

references and citations updated

Cheers Rolf
_{(addicted to the 𐍀𐌴𐍂𐌻 Programming Language :)

Wikisyntax for the Monastery}

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Re^7: Converting python list range expressions to perl
by kcott (Archbishop) on Dec 05, 2022 at 19:02 UTC

In the OP, a notation that looked like [x:y], where x or y could be blank, was given. I noted this equivalence:

Python	Perl
`[x:y]`	`splice ARRAY, x, y`
`[:y]`	`splice ARRAY, 0, y`
`[x:]`	`splice ARRAY, x`
`[:]`	`splice ARRAY, 0`

I coded that and it passed all tests. I took all given tests, and their results, on face value. One exception is [:], which I added myself and was extrapolated from information already provided.

If the original data was wrong in some way, then I'm working from a false premise. If the tests are insufficient, further tests could show that the seen equivalence doesn't hold for other values.

I'm not trying to sell something here. I don't care what the OP uses for his "poetry" project — as already stated: "What you choose is entirely up to you.".

If you think that there's something wrong with the source, please take it up with the OP, not me.

— Ken

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Re^8: Converting python list range expressions to perl

by LanX (Saint) on Dec 05, 2022 at 20:15 UTC

> please take it up with the OP, not me.

I'm not "taking it up with you".

This is a public thread, other readers may get interested to dig deeper.

edit

I was just writing up my findings literally "for the record", before they get lost.

Cheers Rolf
_{(addicted to the 𐍀𐌴𐍂𐌻 Programming Language :)

Wikisyntax for the Monastery}

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Re^9: Converting python list range expressions to perl

by kcott (Archbishop) on Dec 05, 2022 at 20:25 UTC

You've removed the leading "If you think that there's something wrong with the source, ", thereby changing the context.

If you think that there's something wrong with what I've written, by all means take it up with me.

If you think that there's something wrong with the source, take it up with the OP.

— Ken

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