Perl Error Bareword
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Bareword Not Allowed While Strict Subs Rename
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Perl Bareword Not Allowed While Strict Subs Constant
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Bare Word Meaning
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Bare Words Meaning
ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack not allowed while strict subs in use at (user-supplied code) Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Setting bareword environment variable not allowed while strict subs in use http://perlmaven.com/barewords-in-perl up vote 0 down vote favorite In order for my Perl script to run, I need to set an environment variable on the OS to point to our dev servers: export SERVER=DEV However, once the script is distributed to our users, I don't want them to need to export this environment variable each time. Therefore, I thought I would set the environment variable near the beginning of my script. http://stackoverflow.com/questions/25163916/setting-bareword-environment-variable-not-allowed-while-strict-subs-in-use So I added this: $ENV{SERVER}=DEV; However, my script won't allow this because of strict subs: Bareword "DEV" not allowed while "strict subs" in use I've been assured by my department supervisor we must use strict in our scripts, so there's no way of getting around that constraint. Is there a proper way to set bareword environment variables that I am overlooking? perl environment-variables bareword share|improve this question edited Aug 6 '14 at 15:57 asked Aug 6 '14 at 15:08 YonkeyDonk64 19110 4 "I've been assured by my department supervisor we must use strict in our scripts..." Finally, a sane manager! –ThisSuitIsBlackNot Aug 6 '14 at 15:10 How is the variable actually used in the script? –ThisSuitIsBlackNot Aug 6 '14 at 15:14 It appears to be used by a custom Perl module we use to access some DBs with department data we use in our scripts. The module seems to be built on top of DBD::Oracle, since that's what throws the error. We have a set of prod servers and dev servers. The schema I need is on the dev server, and not the prod. I guess which one you need was designed to be set in the OS. –YonkeyDon
in the first place: Always use strict.Check the status of system calls.Verify that each file open is successful.Trap die.Lock files.Unbuffer the output stream when necessary.Use binmode http://docstore.mik.ua/orelly/linux/cgi/ch15_02.htm when necessary. Let's review each of these in detail. 15.2.1. Use strict You should use the strict pragma for any Perl script more than a few lines long, and for all CGI scripts. Simply place the following line at the top of your script: use strict; If an import list is not specified, strict generates errors if you use symbolic references, bareword identifiers not allowed as subroutines, or use variables that are not localized, fully qualified, or pre-defined using the vars argument. Here are two snippets of code, one which will compile successfully under strict, and the other which will cause errors: use strict; $id = 2000; $field = \$id; print $$field; ## Success, will print 2000 $field = "id"; print $$field; ## Error! Symbolic references are not allowed while names of variables, used to get at the underlying object. In the second snippet above, we are trying to get at the value of $id indirectly. As a result, Perl will generate an error like the following: Can't use string ("id") as a SCALAR ref while "strict refs" in use ... Now, let's look at bareword subroutines. Take the following example: use strict "subs"; greeting; ... sub greeting { print "Hello Friend!"; } When Perl looks at the second line, it doesn't know what it is. It could be a string in a void context or it could be a subroutine or function call. When we run this code, Perl will generate the following error: Bareword "greeting" not allowed while "strict subs" in use at simple line 3. Execution of simple aborted due to compilation errors. We can solve this in one of several ways. We can create a prototype, declare greeting as a subroutine with the subs module, use the & prefix, or pass an empty list, like so: sub greeting; ## prototype use subs qw (greeting); ## use subs &greeting; ## & prefix gr