Bareword is intended for questions related to parsing behavior which involves words which are neither language keywords, delimited by quotes, nor prefixed by tokens reserved for variables.
References
Questions tagged [bareword]
20 questions
26
votes
1 answer
Bare words / new keywords in Python
I wanted to see if it was possible to define new keywords or, as they're called in Destroy All Software's "WAT" talk when discussing Ruby, bare words, in Python.
I came up with an answer that I couldn't find elsewhere, so I decided to share it Q&A…
ArtOfWarfare
- 20,617
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12
votes
2 answers
Why do some users quote classnames in Perl?
Looking at Type::Tiny, I see that the class name in the call to Type::Tiny->new is quoted in the official docs,
my $NUM = "Type::Tiny"->new(
name => "Number",
constraint => sub { looks_like_number($_) },
message => sub { "$_ ain't…
Evan Carroll
- 78,363
- 46
- 261
- 468
9
votes
2 answers
Why does Perl open() documentation use two different FILEHANDLE styles?
The documentation for the open function shows the syntax of open() as:
open FILEHANDLE,EXPR
open FILEHANDLE,MODE,EXPR
open FILEHANDLE,MODE,EXPR,LIST
open FILEHANDLE,MODE,REFERENCE
open FILEHANDLE
Down in the examples they have places where a…
Scooter
- 6,802
- 8
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- 64
8
votes
3 answers
perl s/this/that/r ==> "Bareword found where operator expected"
Perl docs recommend this:
$foo = $bar =~ s/this/that/r;
However, I get this error:
Bareword found where operator expected near
"s/this/that/r" (#1)
This is specific to the r modifier, without it the code works.
However, I do not want to modify…
sds
- 58,617
- 29
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5
votes
2 answers
Why are leading-hyphen options permitted on `use` lines without fat comma and with strict?
Why is the following use line legal Perl syntax? (Adapted from the POD for parent; tested on Perl 5.26.2 x64 on Cygwin.)
package MyHash;
use strict;
use Tie::Hash;
use parent -norequire, "Tie::StdHash";
# ^^^^^^^^^^ A bareword with nothing…
cxw
- 16,685
- 2
- 45
- 81
4
votes
1 answer
Why is a bareword following the concatenation operator a string in Perl?
Why does Perl (5.30.3 but also no feature ':all') assume a bareword following the concatenation operator . to be a string? For example:
use v5.30; # or: no feature ':all';
use strict;
use warnings;
my $k1 = 'a';
my $k2 = 'b';
print STDOUT $k1 .…
n.r.
- 1,900
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3
votes
3 answers
Why does Perl complain about barewords in my Win32::OLE script?
#___ FIND LAST ROW/COLUMN WITH DATA
my $row = $Sheet1 -> UsedRange -> Find(
{ What => "*",
SearchDirection => xlPrevious,
SearchOrder => xlByRows
})-> {Row};
Error:
Bareword "xlByRows" not allowed while…
Pankaj
- 61
- 4
3
votes
1 answer
Why does this error about strict subs only trigger under autodie?
Given code like this, I get no warning whatsoever.
use strict;
use warnings;
open STDERR, '>&', STDOUT;
Given this code, I get a fatal error.
use strict;
use warnings;
use autodie;
open STDERR, '>&', STDOUT;
Bareword "STDOUT" not allowed while…
Evan Carroll
- 78,363
- 46
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- 468
3
votes
2 answers
Perl Search and Replace Command Not Working When Called from Inside another Perl Script
I am a beginner with Perl. I am using the Below Perl Command To Search and Replace "/$" Sequence in my tcl Script. This works well When used on the linux Command Line directly.
perl -p -i -e 's/\/\$/\/\\\$/g' sed_list.tcl
I am calling to Call the…
Sridhar
- 31
- 1
- 1
- 4
3
votes
5 answers
Why does defined sdf return true in this Perl example?
I tried this example in Perl. Can someone explain why is it true?
if (defined sdf) { print "true"; }
It prints true.
sdf could be any name.
In addition, if there is sdf function defined and it returns 0, then it does not print anything.
print…
Aftershock
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3
votes
3 answers
PHP - use of bareword in interface function declarations
Looking at PHP's documentation about interfaces, specifically here: PHP: Object Interfaces - Manual. The following code is given as a working example. Could someone explain what the bareword 'Baz' being declared as part of the function signature is…
dewd
- 4,380
- 3
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2
votes
1 answer
Problems with eval and use
I wrote this code and it works when POE module is installed in the system.
#!/usr/bin/perl
use strict;
use warnings;
use POE;
...
But I want to determine if this module exist:
#!/usr/bin/perl
use strict;
use warnings;
eval("use POE; 1") or die…
ciembor
- 7,189
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2
votes
2 answers
exempting a piece of perl code from strict pragma
I have a legacy piece of perl code that uses perl DBI with constructs like
$db->bind_param(1, $some_blob, {TYPE => SQL_BLOB});
where SQL_BLOB is a bareword. I would like to use strict pragma in the same file, but it then complains about the…
celaeno
- 682
- 1
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- 13
2
votes
4 answers
using a windows batch file/command line that runs a perl s/("|')// command, how to do prevent a bareword found where operator expected error?
I've read the other posts and somehow the solutions don't work.
perl -p0777e "s/('|"")/^&/g" "E:\output.csv" > "E:\output2.csv"
I've tried
perl -p0777e "s/('|^")/^&/g" "E:\output.csv" > "E:\output2.csv"
perl -p0777e "s/('|\")/^&/g" "E:\output.csv"…
noobuserpm
- 21
- 4
2
votes
2 answers
What are the pitfalls in using bare words in Perl?
I understand that bare words can be used as strings in quoting operators (q//, qq//), hash keys, etc. I'm personally not too thrilled about this because I can't get over the mental expectation that a literal string should be quoted, as in C, C++.…
Ltf4an
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