Re^6: Data::Dumper output

say outputs a trailing newline unless the arguments already contain a trailing newline.

Are you sure about that? The documentation makes no mention of such a condition and this example suggests that it is not the case:

$ cat say.pl 
#!/usr/bin/env perl 
use strict;
use warnings;
use feature 'say';

my $x = "foo\n";
my $y = 'bar';

say $x;
say $y;
$ ./say.pl 
foo

bar
$
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Re^7: Data::Dumper output by afoken (Chancellor) on May 09, 2021 at 09:51 UTC
say outputs a trailing newline unless the arguments already contain a trailing newline. Are you sure about that? The documentation makes no mention of such a condition and this example suggests that it is not the case: D'oh! Of course, you are right, `say` simply appends a newline, and that's also what's written in the documentation. The "add a newline unless there is already one" is my mental model of `say`, and my code never proved me wrong - because I never called it with a string already containing a trailing newline. And to make things worse, I even linked to the documentation in Re^5: Data::Dumper output. I wonder why my mental model of `say` is wrong. A blame on perlfunc states that the documentation hasn't changed for two years, and has no relevant changes since `say` was introduced. Alexander -- Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)	[reply] [d/l] [select]

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Re^7: Data::Dumper output
by afoken (Chancellor) on May 09, 2021 at 09:51 UTC

say outputs a trailing newline unless the arguments already contain a trailing newline.

Are you sure about that? The documentation makes no mention of such a condition and this example suggests that it is not the case:

D'oh! Of course, you are right, say simply appends a newline, and that's also what's written in the documentation.

The "add a newline unless there is already one" is my mental model of say, and my code never proved me wrong - because I never called it with a string already containing a trailing newline. And to make things worse, I even linked to the documentation in Re^5: Data::Dumper output. I wonder why my mental model of say is wrong. A blame on perlfunc states that the documentation hasn't changed for two years, and has no relevant changes since say was introduced.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

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