/usr/bin/env perl
use strict;
use warnings;
BEGIN {
unshift @INC, '~/perl5/lib/perl5';
}
use Excel::Writer::XSLX;
/usr/bin/env perl
use strict;
use warnings;
use Array::Contains;
BEGIN {
if(contains('--debug', \@ARGV)) {
print("Development INC activated\n\n");
unshift @INC, '~/perl5/lib/perl5';
}
}
use Excel::Writer::XSLX;
Did you try your examples? I don't think so.
Both are missing a shebang (#!) in line 1 and would cause a syntax error. Plus, as shown in Load module from local dir, neither manipulating @INC nor use lib expand the tilde. unshift never should, and use lib doesn't, at least not in my Perl:
/home/alex>cd /tmp/
/tmp>echo 'package Foo;1;' > ~/Foo.pm
/tmp>perl -E 'use Foo; say "ok"'
Can't locate Foo.pm in @INC (you may need to install the Foo module) (
+@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib
+64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /u
+sr/share/perl5 .) at -e line 1.
BEGIN failed--compilation aborted at -e line 1.
/tmp>perl -E 'use lib "~"; use Foo; say "ok"'
Can't locate Foo.pm in @INC (you may need to install the Foo module) (
+@INC contains: ~ /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/l
+ib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5
+/usr/share/perl5 .) at -e line 1.
BEGIN failed--compilation aborted at -e line 1.
/tmp>perl -E 'use lib "~/."; use Foo; say "ok"'
Can't locate Foo.pm in @INC (you may need to install the Foo module) (
+@INC contains: ~/. /usr/local/lib64/perl5 /usr/local/share/perl5 /usr
+/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl
+5 /usr/share/perl5 .) at -e line 1.
BEGIN failed--compilation aborted at -e line 1.
/tmp>perl -E 'use lib $ENV{"HOME"}; use Foo; say "ok"'
ok
/tmp>perl -v
This is perl 5, version 22, subversion 2 (v5.22.2) built for x86_64-li
+nux-thread-multi
Copyright 1987-2015, Larry Wall
Perl may be copied only under the terms of either the Artistic License
+ or the
GNU General Public License, which may be found in the Perl 5 source ki
+t.
Complete documentation for Perl, including FAQ lists, should be found
+on
this system using "man perl" or "perldoc perl". If you have access to
+ the
Internet, point your browser at http://www.perl.org/, the Perl Home Pa
+ge.
/tmp>
And by the way:
Saying
use lib LIST;
is almost the same as saying
BEGIN { unshift(@INC, LIST) }
(from
lib)
Except that newer versions of lib do some additional fancy stuff with architecture-specific directories:
For each directory in LIST (called $dir here) the lib module also checks to see if a directory called $dir/$archname/auto exists. If so the $dir/$archname directory is assumed to be a corresponding architecture specific directory and is added to @INC in front of $dir. lib.pm also checks if directories called $dir/$version and $dir/$version/$archname exist and adds these directories to @INC.
Also, if can be used to conditionally load other modules, including lib:
/tmp>perl -E 'use if -f(qq[$ENV{"HOME"}/Foo.pm]), lib => $ENV{"HOME"};
+ use Foo; say "ok"'
ok
/tmp>
Alexander
--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.