Re^8: Feature Idea: qr//e (barewords)

in reply to Re^7: Feature Idea: qr//e
in thread Feature Idea: qr//e (updated with solutions)

Well it's a parsing problem, if you manage to enter a subroutine named s into the stash you can certainly call it with &s (which is not a bare word anymore)

Can't test at the moment, and Perl's parser is known to be complicated. :)

(I remember that CGI renamed tr to TR for this reason)

Cheers Rolf
_{(addicted to the Perl Programming Language and ☆☆☆☆ :)

Je suis Charlie!}

Comment on Re^8: Feature Idea: qr//e (barewords)

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Re^9: Feature Idea: qr//e (Quote-like-Operators) by LanX (Saint) on Jan 20, 2017 at 14:42 UTC
> if you manage to enter a subroutine named s into the stash you can certainly call it with &s to illustrate what I meant, `s` and `&s` are not "bare" because of the sigils. But a bare word `s` is supposed to start a `s///` resp. `s()()` or `s{}{}` or ... depending on whatever character follows (even with empty space in between) This makes parsing particularly difficult. `use strict; use warnings; s = sub { warn "s called" }; &s(); # --- not working # sub s { # warn "s called" # } # --- neither # s();` [download] `s called at c:/tmp/pm/s_sub.pl line 11.` [download] This problem should apply for all perlop#Quote-and-Quote-like-Operators . Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :) Je suis Charlie!}	[reply] [d/l] [select]

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Re^9: Feature Idea: qr//e (Quote-like-Operators)
by LanX (Saint) on Jan 20, 2017 at 14:42 UTC

> if you manage to enter a subroutine named s into the stash you can certainly call it with &s

to illustrate what I meant, *s and &s are not "bare" because of the sigils.

But a bare word s is supposed to start a s/// resp. s()() or s{}{} or ... depending on whatever character follows (even with empty space in between)

This makes parsing particularly difficult.

use strict;
use warnings;


*s = sub { warn "s called" };

&s();

#  --- not working
# sub s {
#   warn "s called"
# }

# --- neither
#   s();
[download]

s called at c:/tmp/pm/s_sub.pl line 11.
[download]

This problem should apply for all perlop#Quote-and-Quote-like-Operators .

Cheers Rolf
_{(addicted to the Perl Programming Language and ☆☆☆☆ :)

Je suis Charlie!}

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