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This channel is intended for people just starting with the Raku Programming Language (raku.org). Logs are available at irclogs.raku.org/raku-beginner/live.html Set by lizmat on 8 June 2022. |
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| lizmat | PSA: pl6anet.org is now officially offline, if you were still using that, please use planet.raku.org instead | 08:55 | |
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| wafflus | when looping thought a file how do i get the next line after i match? | 18:55 | |
| nemokosch | Could you illustrate it? | 19:08 | |
| wafflus | when /\.ITEM/' {get next line and print } | 19:11 | |
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| wafflus | maybe i need a state var | 19:16 | |
| nemokosch | you can retrieve a line from a file handle using get, if that helps | 19:18 | |
| the other solution I'm looking into is with toggle | 19:21 | ||
| wafflus | yeah i've been messing around alot as well lol | 19:22 | |
| i;m sure i will get it using the get it took me a few mine to understand how to use it | 19:27 | ||
| nemokosch | at the end of the day, it depends what you want to do, too | 19:28 | |
| I managed it with toggle eventually | |||
| 'filename'.IO.lines.toggle(:off, *.match(pattern)) is the sequence of lines starting from the match | 19:29 | ||
| wafflus | ok thanks | ||
| nemokosch | if you need a more stateful, more procedural processing, I'd use something like | ||
| loop (my $fh = open('filename'.IO), my $line = $fh.get; $line.defined; $line = $fh.get) { ... } | 19:30 | ||
| do something depending on the value of $line, maybe fetch the next line | 19:31 | ||
| wafflus | k iyeah that's what i was trying to do :) | ||
| nemokosch | keep in mind that in this case, $fh and $line belong to the surrounding scope so they are visible after the loop as well | 19:33 | |
| wafflus | so confusing i'll get it eventually | 19:36 | |
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| wafflus | raku -e ' loop (my $fh = open("./install-next.txt".IO), my $line = $fh.get; $line.defined; $line = $fh.get) {.say when /\.ITEM/ }' | 19:39 | |
| why am i geting this error all the time Use of uninitialized value of type Any in string context. | |||
| Methods .^name, .raku, .gist, or .say can be used to stringify it to something meaningful. | |||
| in block at -e line 1 | |||
| i got it cu around thanks | 19:49 | ||
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| nemokosch | because you are calling .say without having a topic set | 21:17 | |
| you could wrap it in given $line { } | 21:18 | ||