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| bruceAxtens | Regarding 'ACTU'.split("").Array.map(-> $v { $v.ord }) | 03:34 | |
| (Nil 65 67 84 85 Nil) | |||
| why do i get Nil either side? | 03:35 | ||
| And how can I not get Nil. I just want the ascii values | |||
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| lakmatiol | Consider using .comb instead of .split(''). | 06:21 | |
| m: say 'TUV'.comb.map(*.ord) | 06:22 | ||
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| SmokeMachine | m: say 'TUV'.comb.map(*.ord) # running for lakmatiol#8020 | 13:01 | |
| camelia | (84 85 86) | ||
| axtens | thank you | 13:48 | |
| SmokeMachine | :) | 14:41 | |
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| suman | say $_ if $_~~ /regex/ for "file".IO.lines gives the line that match the regex. | 16:50 | |
| How to get the line immediately after the match? | |||
| gfldex | m: say lines.WHAT; | 17:31 | |
| m: .say for lines; | 17:32 | ||
| m:``` | 17:34 | ||
| for my \l = lines { | |||
| last if / 'may' /; | |||
| } | |||
| say l.head; | |||
| ``` | |||
| m:``` | |||
| for my \l = lines() { | |||
| last if / 'may' /; | |||
| } | |||
| say l.head; | |||
| ``` | |||
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| m:``` | 17:41 | ||
| my @l = lines; | |||
| while @l.shift { | |||
| last when / 'may' /; | |||
| } | |||
| say @l.head; | |||
| ``` | |||
| my @l = lines; | 17:45 | ||
| while @l.shift -> $_ { | |||
| last when / 'may' /; | |||
| } | |||
| say @l.head; | |||
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| Using `.first(/ 'may' /, :kv)` would work too ofc. | 17:46 | ||
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| Nemokosch | how can I pass an optional argument to a sub? | 18:30 | |
| when it's not a constant value | |||
| lizmat | sub foo($a = 42) { ... } # $a is optional with 42 as default | 18:31 | |
| sub foo($a?) { ... } # $a is optional with Any as default | 18:32 | ||
| Nemokosch | wait, it's not even optional... | ||
| lizmat | what isn't optional? | ||
| Nemokosch | so there is the `extension` sub | ||
| it has :$parts = 1 | |||
| lizmat | m: sub foo($a = 42) { $a }; say foo | 18:33 | |
| camelia | 42 | ||
| Nemokosch | I want to set this to the value I figure out | ||
| lizmat | :$parts is a named parameter | ||
| Nemokosch | yes, my bad | ||
| lizmat | sub foo(:$parts = 42) { $parts }; say foo | ||
| Nemokosch | the question holds with named parameter š | ||
| lizmat | m: sub foo(:$parts = 42) { $parts }; say foo | ||
| camelia | 42 | ||
| lizmat | m: sub foo(:$parts = 42) { $parts }; say foo parts => 137 | ||
| camelia | 137 | ||
| Nemokosch | oh okay, so like a hash? | 18:34 | |
| lizmat | no | 18:37 | |
| a => 42 is a first class citizen in Raku | |||
| it's called a Pair | |||
| by default, Pairs specified in a call, are interpreted as named arguments | |||
| Morfent | if you wrap a pair in parentheses it'll get treated like a positional argument | 19:04 | |
| ditto making a slip out of a list of pairs | |||
| for variadic named arguments, you need to slip a hash of sorts | 19:05 | ||
| lizmat | |%hash ? | ||
| Morfent | yep | ||
| lizmat | m: my %h = a => 42, b => 666; sub a(:$a, :$b) { dd $a, $b }; a |%h | 19:06 | |
| camelia | 42 666 |
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| Nemokosch | I mean, hashes consist of "pairs" if we insist on this terminology | 19:19 | |
| lizmat | yes, you could consider a has an unordered list of pairs | 19:28 | |
| in fact, if you iterate over a hash, that's exactly what you get | |||
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| lizmat | m: my %h = a => 42, b => 666, c => 137; dd $_ for %h | 19:29 | |
| camelia | :b(666) :a(42) :c(137) |
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| lizmat | m: my %h = a => 42, b => 666, c => 137; dd $_ for %h | ||
| camelia | :a(42) :c(137) :b(666) |
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| lizmat | note the order is indeterminate | ||
| Nemokosch | gotcha | 20:35 | |
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