On 2019-12-06 23:06, William Michels via perl6-users wrote:
On Fri, Dec 6, 2019 at 10:54 PM ToddAndMargo via perl6-users
<perl6-us...@perl.org> wrote:
On 2019-12-06 22:38, ToddAndMargo via perl6-users wrote:
On Fri, Dec 6, 2019 at 9:28 PM ToddAndMargo via perl6-users
<perl6-us...@perl.org> wrote:
On 2019-12-06 20:33, William Michels via perl6-users wrote:
say $/;
First I have seen of `$/`. Is it any relation to `$_`?
On 2019-12-06 22:11, William Michels via perl6-users wrote:
Hi Todd, yes in a sense "$/" is related to "$_" in that they're both
variables that get filled with values behind the scenes by Raku/Perl6.
You already know that "$_" is the general default 'topic' variable
(same as in Perl 5, see Ref#1 below).
From Ref#2 below: " $/ is the match variable. It stores the result of
the last Regex match and so usually contains objects of type Match."
Apparently "$/" in Raku/Perl6 has replaced a series of variables that
were used in Perl5, including "$`", "$&", and "$'" which "are gone
from Raku" (Ref#3 below):
1. https://docs.raku.org/language/5to6-perlvar#$ARG,_$_
2. https://docs.raku.org/syntax/$$SOLIDUS
3.
https://docs.raku.org/language/5to6-perlvar#Variables_related_to_regular_expressions
HTH, Bill.
Awesome! I am going to have fun with this! I do
A LOT of regex's.
Thank you!
Tells me what was matched! Oh I am going to have a
lot of fun with this!
my $x = Q[\:\\::]; ( my $y = $x ) ~~ s/ '\\\\' /x/; say $/
｢\\｣
my $x = Q[abcdef]; ( my $y = $x ) ~~ s/ .*? (cd) (e) .* /x/; say $/
｢abcdef｣
0 => ｢cd｣
1 => ｢e｣
my $x = Q[abcdef]; ( my $y = $x ) ~~ m/ .*? (cd) (e).* /; say $/
｢abcdef｣
0 => ｢cd｣
1 => ｢e｣
my $x = Q[abcdef]; ( my $y = $x ) ~~ m/ .*? (cd) (e).* /; for $/ {say $_};
｢abcdef｣
0 => ｢cd｣
1 => ｢e｣
my $x = Q[abcdef]; ( my $y = $x ) ~~ m/ .*? (cd) (e).* /; say $/[0]; say
$/[1]
｢cd｣
｢e｣
Adding some:
mbook:~ homedir$ perl6
To exit type 'exit' or '^D'
my $x = Q[\:\\::];
\:\\::
say $/ if $x ~~ m/ '\\\\' /;
｢\\｣-T
say $/ if $x ~~ rx/ '\\\\' /;
｢\\｣
say $x
\:\\::
$*VM
moar (2019.07.1)
HTH, Bill
Hi Bill,
Maybe it is just me and I am easily amused, but I find regex's
a blast to work with.
P6's are easier than P5 too. Nice clean up.
-T
