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| mayd17 | hi, on Windows, on the command line, I do this: `raku -e 'say "-" ~ 1'` | 10:45 | |
| and I get `-1` as expected | 10:46 | ||
| then I do `raku -e 'say "-" ~ 0'` | |||
| but I get `0`! | |||
| if I interchanged the single/double quotes, both work fine | 10:47 | ||
| is this due to powershell? | |||
| Nemokosch | what if you `echo 'say "-" ~ 0'`? | 10:52 | |
| mayd17 | then i get `say "-" ~ 0` | ||
| on Ubuntu both single and double quote combinations work for both 0 and 1 fine | 10:54 | ||
| Nemokosch | and what if you start the raku repl and run say "-" ~ 0 there? | ||
| and what if you start the raku repl and run `say "-" ~ 0` there? | |||
| mayd17 | then I get `-0` no problem | ||
| Nemokosch | I know 😄 | 10:55 | |
| mayd17 | I also tried a script before that with that line, works okay | ||
| then why did you ask :d | |||
| oh, rheotrical questions? :d | |||
| if so, i didn't get the thing | |||
| fyi | |||
| oh you said I know to the Ubuntu thing, right? sorry okay | 10:57 | ||
| Nemokosch | yeah | 11:02 | |
| mayd17 | context: i was trying to rename many files whose names follow the pattern `file(\d+).png` but numbers in them start from 1; I needed them 0-indexed. Also, a hyphen before the digits is needed, i.e., `file-(\d+).png`. I thought I can do with Raku on the command line with `raku -e 'rename($_, .subst(/(\d+)/, {"-" ~ ($0 - 1)})) for dir'` | 11:25 | |
| and it works except for `file1.png` to `file-0.png`. It gave `file0.png` instead. | 11:26 | ||
| Nemokosch | time to ask Coke I guess | 11:29 | |
| mayd17 | should I drink something? :d | ||
| lizmat | Coke is offline until tomorroqw | 11:33 | |
| Nemokosch | so you say "-" ~ 0 itself evaluated to '0'? | ||
| mayd17 | oh Coke is a user here, so sorry | 11:37 | |
| yes it gives `0` when I do `raku -e 'say "-" ~ 0'` | |||
| if I do with `-8` instead of `0`, it gives `8` | 11:39 | ||
| if I do with `7` instead of `0`, it gives `-7` | 11:40 | ||
| Nemokosch | I'm confident the order of evaluation is bad some way | 11:41 | |
| like the string is interpolated by your shell, not Raku, or something like that | 11:42 | ||
| you said Powershell? | 11:43 | ||
| mayd17 | yes | 11:46 | |
| Nemokosch | well what is still possible is that the -e switch itself passes the argument wrong | 11:52 | |
| this is why it would be good if you could run your stuff from the repl | |||
| mayd17 | worse things happen with perl, so powershell is doing some uninteresting things | 12:56 | |
| though, it gives a syntax error, maybe that's not worse not sure | 12:57 | ||
| syntax error around double quotes inside | |||
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| Bscan🍺 | ``` | 17:48 | |
| sub foo($bar) { | |||
| print "Hello"; | |||
| } | |||
| foo(); | |||
| ``` | |||
| Gives a pretty good error that "Error while compiling: Calling foo() will never work with declared signature ($bar)". However this error doesn't show up when you run raku -c on this script. Why wouldn't -c catch this compilation error? | |||
| MasterDuke | -c is really just (currently) a syntax check. i don't know if there's more planned to be done with it | 18:49 | |
| Bscan🍺 | Thanks! I think I was just surprised that another compilation step happened in between -c and code execution. | 19:39 | |
| MasterDuke | currently the optimizer also does some correctness checking. part of the current rakuast effort is to split that out into more well defined stages | 19:40 | |
| Nemokosch | rakuast always shows up | 19:43 | |
| it's almost like an inside joke at this point 😄 | |||
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| Bscan🍺 | Haha, thanks. I suppose my follow up question would be how to trigger the optimizer from nqp::getcomp. I'm building a language server (see marketplace.visualstudio.com/items...-navigator ) and using the parsing method from github.com/Raku/Raku-Parser which doesn't do the optimizer stage. Have you seen any examples of parsing with the optimizer? If I can squeeze out b | 20:17 | |
| Nemokosch | o.O very nice | 20:21 | |
| MasterDuke | you'd have to compile the code i believe | ||
| github.com/rakudo/rakudo/blob/mast...m6#L43-L72 might be relevant | 20:22 | ||
| or ping nine, lizmat, vrurg, etc over in #raku-dev | 20:23 | ||
| Bscan🍺 | Thanks. I'll try to get it working this weekend, and then perhaps ping them for a quick code review. | 20:42 | |
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