Raku: problem with say() function

7stud has asked for the wisdom of the Perl Monks concerning the following question:

Dear Monks,

The following code works as expected

use v6;

my $name = "Joe";
say "Hello $name";

--output:--
Hello Joe
[download]

However, the following code produces an error:

use v6;

my $name = "Joe";
say "Hello -->$name<--";

--output:--
===SORRY!=== Error while compiling /Users/7stud/raku_programs/d.raku
Unable to parse quote-words subscript; couldn't find '>' (correspondin
+g '<' was at line 4)
at /Users/7stud/raku_programs/d.raku:12
------> <BOL>&#9167;<EOL>
 expecting any of:
        postfix
[download]

Obviously, there are some characters that cannot appear in a string, but I looked around and I couldn't find any information about that.

Also, in the error message what does the following mean:

------> <BOL>⏏<EOL>

Comment on Raku: problem with say() function Select or Download Code

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Re: Raku: problem with say() function (method?) by 7stud (Deacon) on Feb 07, 2024 at 15:45 UTC
Okay, I found a solution in the herdoc docs. I need to do this: `say "Hello -->{$name}<--";` [download] According to the heredoc docs: The angle bracket to the right of the variable makes it look like a hash index to Raku.	[reply] [d/l]
Re: Raku: problem with say() function (method?) by LanX (Saint) on Feb 07, 2024 at 15:40 UTC
I'm no Raku user, but I know that the syntax for `$hash{key}` is now `%hash<key>` (for non quoted keys). It looks like the parser gets confused looking for a hash element inside string interpolation (independent from 'say') Maybe try quoting the `<` with `\<` Cheers Rolf _{(addicted to the Perl Programming Language :) see Wikisyntax for the Monastery}	[reply] [d/l] [select]
Re^2: Raku: problem with say() function (method?) by 7stud (Deacon) on Feb 07, 2024 at 16:13 UTC
Thanks Rolf. It's a little disconcerting, but the Hash docs don't explain the <> notation. As far as I can tell, it's the same as qw. I found docs on "Word quoting" here. `say <a b c> eqv ('a', 'b', 'c'); # OUTPUT: ŤTrueť` And, there are some examples at Raku By Example: Hashes: `say %person-age{'Joan'}; # accessing an element say %person-age<Ben>; # same as above but the quote-words operator` [download]	[reply] [d/l] [select]