Hi there. I'm new to perl and this problem is *kIlLiNg* me! I'm eager to learn perl though, so any help would be much appreciated!
I want to pass the LHS and RHS of an s/// expression in to a subroutine along these lines:
# foo(text, regexp, replacement)
# print text with replacements
sub foo {
my $text;
($text = $_[0]) =~ s/$_[1]/$_[2]/;
print $text;
}
foo("This is test 1\n", "test (.*)", "fish $1");
With the intention of replaceing "test
n" with "fish
n" using backreferncing. But can I get it to work!? I've tried replacing it with "fish $1", "fish \$1", "fish \\$1" and even "fish \\\$1"! Sadly nothing yields the result I'm after.
Could anyone explain why, and how I should do what I'm trying to do?
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.