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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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| rcmlz | m: grammar Splitter { # as many times as possible size $m, then sizes $n, until entire string is consumed token TOP ( $m, $n ) { [:!r <long>+] <short>+ } # no ratchet for <long>, needs to look backwards to make <short> match token long { \w {$*m} } token short { \w {$*n} } } my @tests = [ ['thisisfun', 3, 3, <thi sis fun>, 'three times | 05:06 | |
| len 3'], ['thisisfunxx', 3, 2, <thi sis fun xx>, 'three times len 3, one time len 2'], ['ifmanwasmeanttostayonthegroundgodwouldhavegivenusroots', 7, 6, <ifmanwa smeantt ostayon thegrou ndgodwo uldhave givenu sroots>, 'six times len 7, two times len 6'], ]; use Test; for @tests -> ($in, $m, $n, $res, $desc) { my $parsed = Splitter.parse($in, :args(($m,$n))).hash; my @matches = map *.Str, | |||
| |$parsed{'long'}, |$parsed{'short'}; is @matches, $res, $desc } | |||
| Raku eval | ok 1 - three times len 3 ok 2 - three times len 3, one time len 2 ok 3 - six times len 7, two times len 6 | ||
| rcmlz | but better looked at here: gist.github.com/rcmlz/189df1e4386c...9b9ed242e5 | 05:07 | |
| so the solution was to turn „ratchet“ off for the first token. | 05:08 | ||
| and pass two parameter to the grammar. | 05:09 | ||
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| ab5tract | Cheers, thanks! | 07:09 | |
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| jgaz | I know I can put `state $i = 0;` ... `$i++;` in a for loop, but isn't there a Raku magic variable that keeps track of the loop count? For context: I'm keeping track of my line number given a multi-line string. | 16:03 | |
| lizmat | m: for ^10 { say $_ } | 16:11 | |
| camelia | 0 1 2 3 4 5 6 7 8 9 |
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| lizmat | m: sub a() { say $++ }; a for ^10 | 16:12 | |
| camelia | 0 1 2 3 4 5 6 7 8 9 |
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| lizmat | $ being the nameless state variable | ||
| jgaz | interesting | 16:17 | |
| thanks | |||
| nahita3882 | you can also .kv the iteratee and have the parametrized block as, e.g., -> $idx, $val | 17:15 | |
| i'm 96% sure iteratee isn't a word but what I meant is the thing you are iterating over like for @things.kv -> $idx, $val { ... } | |||
| oh wow it's a word en.wikipedia.org/wiki/Iteratee but means something else i guess | 17:17 | ||
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