| 24 Oct 2024 | |||
| ab5tract | winfredraj: check this out ^^^ | 18:54 | |
| winfredraj | oh cooler | ||
| ab5tract | antononcube: that only works when it’s true. You still haven’t provided an example of what wasn’t working for you | 18:55 | |
| I don’t even understand how you can argue that my code didn’t work when it literally | 18:57 | ||
| works here in the chat | |||
| the original question said nothing about using instance variables | |||
| winfredraj | m: class V { has $!t = False; multi method v($SELF where $!t:$just_for_test) { say “check your self”; $!t = False}; multi method v($SELF where not $!t:) { say “check YOU out!”; $!t = True} }; my $v = V.new; $v.v(1) xx 9 | 18:58 | |
| Raku eval | Exit code: 1 ===SORRY!=== Error while compiling /home/glot/main.raku Variable '$just_for_test' is not declared. Perhaps you forgot a 'sub' if this was intended to be part of a signature? at /home/glot/main.raku:1 ------> = False; multi method v($SELF where $!t:⏏$just_for_test) { say “check your self”; | ||
| winfredraj | oh just tried your 2nd example with a second parameter, just playing around | 18:59 | |
| ill play in my repl instead of making the chat untidy | 19:00 | ||
| ab5tract | No worries :) | ||
| I think the issue there is that $!t is set to False by default but you only added a positional argument to the candidate that needs $!t to be true | 19:02 | ||
| winfredraj: ah, well that's a different issue, but the error above is because the parser needs a whitespace between that single colon and the first variable | 19:05 | ||
| antononcube | @ab5stract "I don’t even understand how you can argue that my code didn’t work when it literally" -- where / when did I say that? | 19:06 | |
| winfredraj | got to hit the sack - thanks @antononcube @librasteve @<ab5tract> and @lizmat - goodnight ( or later) | 19:09 | |
| ab5tract | antontoncube: `It is also seems very helpful to tell someone that their approach is wrong and it does not apply. Then they provide working code.` | 19:10 | |
| that statement implies non-working code | |||
| You still haven't shared a single example of something you tried with what I've presented that didn't work | 19:11 | ||
| Let alone something that demonstrates that my "approach is wrong" and inapplicable | 19:13 | ||
| antononcube | @ab5tract That was a generic statement, an answer to your generic statement. Note that you are not mentioned in that in statement. | 19:25 | |
| ab5tract | I didn't present a generic statement. I was specifically referring to your approach | 19:31 | |
| And I am incredulous that you expect me to believe that you didn't intend the same | |||
| antononcube | @ab5tract Believe whatever you want, but I did not write that your code in not working. | 19:36 | |
| 26 Oct 2024 | |||
| winfredraj | hello all | 19:08 | |
| m: class Point { has $.x;has $.y; multi method new($x, $y) { my %temp; %temp<x> = $x; %temp<y> = $y; self.bless(%temp);}}; my $p = Point.new(-1, 1); | |||
| Raku eval | Exit code: 1 Too many positionals passed; expected 1 argument but got 2 in method new at main.raku line 1 in block <unit> at main.raku line 1 | ||
| winfredraj | why is the bless not accepting %temp? | 19:09 | |
| m: class Point { has $.x;has $.y; multi method new($x, $y) { my %temp; %temp<x> = $x; %temp<y> = $y; say %temp; self.bless(%temp);}}; my $p = Point.new(-1, 1); | 19:11 | ||
| Raku eval | {x => -1, y => 1} Exit code: 1 Too many positionals passed; expected 1 argument but got 2 in method new at main.raku line 1 in block <unit> at main.raku line 1 | ||
| winfredraj | I just want to know how to pass the hash or how I must structure the hash in terms of the keys for the members or if it at all possible to use bless with a hash as an argument | 19:13 | |
| ab5tract | m: class Point { has $.x;has $.y; multi method new($x, $y) { my %temp; %temp<x> = $x; %temp<y> = $y; say %temp; self.bless(|%temp);}}; my $p = Point.new(-1, 1); | 20:29 | |
| camelia | {x => -1, y => 1} | ||
| ab5tract | You want to use | to expand the hash contents into arguments for bless | 20:30 | |
| Otherwise the hash is just another (unexpected, in this case) positional argument | |||
| winfredraj | thanks ab5tract | 20:32 | |
| ab5tract | My pleasure | 20:34 | |
| The | prefix operator comes in handy quite often | 20:35 | ||
| For instance, if you want a range to expand to all of its elements, just put | in front (usually in combination with parentheses around the range) | 20:36 | ||
| Or if you want to expand @args into positional parameters | |||
| So I recommend giving it a try whenever you run into a situation where you are getting fewer elements than you want to be getting | 20:37 | ||
| winfredraj | I remember vaguely using something like that for the reduce function I think | ||
| need to check it | |||
| ab5tract | Yeah it definitely comes in handy with reduction and most other meta ops | 21:03 | |
| antononcube | @winfredraj There is package that lets you make classes from hashes. ("Hash2Class" I think...) | 21:04 | |
| It was recently updated... | |||
| raku.land/zef:lizmat/Hash2Class | 21:07 | ||
| winfredraj | thanks antoncube - ill check it out tomorrow - need to catch some sleep now | 21:09 | |
| was battling with xml - would be great if we had something like type providers in F#, maybe Ill work on somethink like that when I have some free time | 21:10 | ||
| 27 Oct 2024 | |||
| ab5tract | winfredaj: I think something similar should be reasonably possible with RakuAST | 10:22 | |
| eventually macros will be fully implemented on top of RakuAST, making it even simpler | 10:23 | ||
| but even now, you can create classes dynamically | |||
| but even now, you can create classes dynamically | 10:27 | ||
| oops, wrong window :) | |||