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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disbot <simon_sibl> would there be a way to do something like this 04:12
<simon_sibl> for ($input-file.IO.lines[0..^10], 0..*) -> ($line, $number) {...} 04:13
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disbot <simon_sibl> for 0..* Z $input-file.IO.lines[0..^10] { ok this work ! 04:18
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disbot <jubilatious1_98524> ~ % raku -e 'for lines[0..^10].kv -> $k,$v { put join " ", $k,$v };' letter-per-line.txt 0 a 1 b 2 c 3 d 4 e 5 f 6 g 7 h 8 i 9 j 04:55
<jubilatious1_98524> ~ % raku -e 'say .key => .value for lines[0..^10].pairs;' letter-per-line.txt 0 => a 1 => b 2 => c 3 => d 4 => e 5 => f 6 => g 7 => h 8 => i 9 => j 05:00
<jubilatious1_98524> (N.B. don't use say in production scripts). 05:03
<simon_sibl> wait why not ? 05:06
<jubilatious1_98524> Use put instead. This is because say calls gist on objects and you may end up with truncated output. Example where is 101? (truncation at 100 elements): 05:18
<jubilatious1_98524> ~ % raku -e 'say 0...101;' (0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 ...) 05:19
<jubilatious1_98524> ~ % raku -e 'put 0...101;' 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101
<jubilatious1_98524> say is great for command-line and REPL exploration. But you'll need un-truncated output in production--so use put (for piping, etc.). 05:23
<simon_sibl> aaaah I see, thank you for the advise ! 06:21
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disbot <librasteve> fwiw, lines[^10] is a shorter way to say the same thing 18:24
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