Re^2: use of strict

you will still get an error that you can't use 3 as a reference while strict is in effect. This is because Perl sees %${w} and interprets it as %{ ${ w }}, trying to interpret the value of $w as a reference.

Did you test your assumption?

my $w = 5;
my $str = "abc";
my $line = sprintf "%${w}s ", $str;
print "'$line'\n";
__END__
'  abc '
[download]

The format string is %5s with perl 5, version 20, subversion 2 (v5.20.2).

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

Comment on Re^2: use of strict Select or Download Code

Replies are listed 'Best First'.
Re^3: use of strict by Corion (Patriarch) on Jul 25, 2017 at 07:54 UTC
No, I didn't test my assumption, but my wonderment about it slowly ceases. Perl does not interpolate hashes in strings, as it accurately says in perlop: For constructs that do interpolate, variables beginning with "$" or "@" are interpolated. `use strict; print "%foo";` [download] So, my argumentation above is simply wrong as Perl will not go looking for a hash (reference).	[reply] [d/l]