Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things
 
PerlMonks  

Re: POD for use feature 'declared_refs' wrong

by ikegami (Patriarch)
on Oct 18, 2021 at 13:47 UTC ( #11137680=note: print w/replies, xml ) Need Help??


in reply to POD for use feature 'declared_refs' wrong

use feature qw(declared_refs) doesn't seem to make sense without the other feature.

Yes, but the refaliasing does make sense without declared_refs, so it's possible that refaliasing could be accepted without declared_refs.

Upd: Removed incorrect claim once present here. Bad test.


Use of refalising and declared_refs:
$ perl -M5.022 -e' my $x = 123; \my $y = \$x; say $y; ' Experimental aliasing via reference not enabled at -e line 2. $ perl -M5.022 -e' use feature qw( refaliasing ); my $x = 123; \my $y = \$x; say $y; ' Aliasing via reference is experimental at -e line 3. 123 $ perl -M5.022 -e' use feature qw( refaliasing ); no warnings qw( experimental::refaliasing ); my $x = 123; \my $y = \$x; say $y; ' 123 $ perl -M5.022 -e' use experimental qw( refaliasing ); my $x = 123; \my $y = \$x; say $y; ' 123
$ perl -M5.026 -e' my $x = 123; my \$y = \$x; say $y; ' The experimental declared_refs feature is not enabled at -e line 2. $ perl -M5.026 -e' use feature qw( declared_refs ); my $x = 123; my \$y = \$x; say $y; ' Declaring references is experimental at -e line 3. Experimental aliasing via reference not enabled at -e line 3. $ perl -M5.026 -e' use feature qw( refaliasing declared_refs ); my $x = 123; my \$y = \$x; say $y; ' Declaring references is experimental at -e line 3. Aliasing via reference is experimental at -e line 3. 123 $ perl -M5.026 -e' use feature qw( refaliasing declared_refs ); no warnings qw( experimental::refaliasing experimental::declared_re +fs ); my $x = 123; my \$y = \$x; say $y; ' 123 $ perl -M5.026 -e' use experimental qw( refaliasing declared_refs ); my $x = 123; my \$y = \$x; say $y; ' 123

Upd: Dropped requirement to 5.22 for refaliasing part.

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://11137680]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others having an uproarious good time at the Monastery: (2)
As of 2022-01-17 05:13 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    In 2022, my preferred method to securely store passwords is:












    Results (51 votes). Check out past polls.

    Notices?