Sponsored Content
Full Discussion: Switching over to C++
Top Forums Programming Switching over to C++ Post 302795903 by alister on Thursday 18th of April 2013 02:54:04 PM
Old 04-18-2013
Why were you asked to rewrite in C++? Was any justification given? Or is it just a blind assumption that it will be better?

I am going to assume that the perl script is a complicated beast.

I would seriously advise against a rewrite, except as a last resort. Complex code that works well is usually the result of a lot of testing and debugging. I would not cast it aside lightly.

I concur with Corona688 and elixir_sinari. Profile your current script and see where it spends most of its time. Then, have a look at those subroutines and see if they can be optimized in perl. Even if that's insufficient, a complete rewrite is still not your only alternative. The critical perl sections can be re-implemented in C and loaded by the perl interpreter like any other module: perlxs.

One thing is certain: advice on whether to rewrite code from people who do not know what that code does isn't worth much. Perhaps not even the proverbial 2 cents.

Regards,
Alister
 

10 More Discussions You Might Find Interesting

1. Solaris

Switching between users

Hi folks, could anyone please tell me how can i switch between two users without going thru the su(i.e. root)? is there any such command? thanks in advance, thell (1 Reply)
Discussion started by: thell
1 Replies

2. Shell Programming and Scripting

su (switching to other user)

Hi, what is the use of the double quotes and !! in the following code segment: su - user1 << ""!! > /dev/null 2>&1 echo "welcome user1" EOF !! also what is the difference between below: su - user1 << ""!! > /dev/null 2>&1 and su - $USER << ""!!!> /dev/null 2>&1. Note: $USER =... (1 Reply)
Discussion started by: bjagadeesh
1 Replies

3. Shell Programming and Scripting

su (switching to other user)

Hi, what is the use of the double quotes and !! in the following code segment: su - user1 << ""!! > /dev/null 2>&1 echo "welcome user1" EOF !! also what is the difference between below: su - user1 << ""!! > /dev/null 2>&1 and su - $USER << ""!!!> /dev/null 2>&1. Note: $USER =... (2 Replies)
Discussion started by: bjagadeesh
2 Replies

4. Shell Programming and Scripting

Switching between two users

Can any one tell me : How we can switch between two users without prompting for the password. (In the SHELL SCRIPT can we fetch the USERID and PASSWORD from a specified file, without using SUDO command)? (2 Replies)
Discussion started by: deepusunil
2 Replies

5. Linux

Switching from one DNS to another

Hi all, we have running some linux servers with sles9 and we have some problems with our dns servers. Sometimes they don't like to work. However, is there a parameter to enable faster switching between two ore more dns servers? Thx for your help in front Regards frank (5 Replies)
Discussion started by: ortsvorsteher
5 Replies

6. Shell Programming and Scripting

switching users

Hi I want to write a script which can switch between super users.But it asks for the password at the prompt.How can I manage in the script so that it didnt ask me for the password at the prompt. (1 Reply)
Discussion started by: monika
1 Replies

7. OS X (Apple)

vt switching

greetings, i hope this hasn't been covered previously. has anyone heard of a .kext or daemon that would allow linux or (open)solaris-like vt switching? googling didn't help much.. i know os x allows a '>console' login from loginwindow.app, but i'm mainly interested in this because there are... (0 Replies)
Discussion started by: bamdad
0 Replies

8. Shell Programming and Scripting

Switching lines

Hi I'm quite new with linux. Very simple, I need to swap every 2 lines in a file. Example INPUT: a a a b b b x x x y y y s s s t t t OUTPUT: b b b a a a y y y x x x t t t (5 Replies)
Discussion started by: hernand
5 Replies

9. Solaris

The switching in the different AP's

HI, I am using the windows 2003 server R2 in there we are using the putty as to access the different AP's now from the primary AP i want to login to several different AP's using a script what the script will do is :- input a text file in which list of different ap's and the corresponding... (0 Replies)
Discussion started by: amiglani
0 Replies

10. Shell Programming and Scripting

Case switching

Hello Folks I am writing this simple program but I am stuck at this point. Here is the snippet from my script where I have issues. 3) echo "Current Directory: $(pwd) Menu 3" echo -e "Enter a file name\n" read fname if then ... (5 Replies)
Discussion started by: Tuxidow
5 Replies
HTML::RewriteAttributes(3pm)				User Contributed Perl Documentation			      HTML::RewriteAttributes(3pm)

NAME
HTML::RewriteAttributes - concise attribute rewriting SYNOPSIS
$html = HTML::RewriteAttributes->rewrite($html, sub { my ($tag, $attr, $value) = @_; # delete any attribute that mentions.. return if $value =~ /COBOL/i; $value =~ s/rocks/rules/g; return $value; }); # writing some HTML email I see.. $html = HTML::RewriteAttributes::Resources->rewrite($html, sub { my $uri = shift; my $content = render_template($uri); my $cid = generate_cid_from($content); $mime->attach($cid => content); return "cid:$cid"; }); # up for some HTML::ResolveLink? $html = HTML::RewriteAttributes::Links->rewrite($html, "http://search.cpan.org"); # or perhaps HTML::LinkExtor? HTML::RewriteAttributes::Links->rewrite($html, sub { my ($tag, $attr, $value) = @_; push @links, $value; $value; }); DESCRIPTION
"HTML::RewriteAttributes" is designed for simple yet powerful HTML attribute rewriting. You simply specify a callback to run for each attribute and we do the rest for you. This module is designed to be subclassable to make handling special cases eaiser. See the source for methods you can override. METHODS
"new" You don't need to call "new" explicitly - it's done in "rewrite". It takes no arguments. "rewrite" HTML, callback -> HTML This is the main interface of the module. You pass in some HTML and a callback, the callback is invoked potentially many times, and you get back some similar HTML. The callback receives as arguments the tag name, the attribute name, and the attribute value (though subclasses may override this -- HTML::RewriteAttributes::Resources does). Return "undef" to remove the attribute, or any other value to set the value of the attribute. SEE ALSO
HTML::Parser, HTML::ResolveLink, Email::MIME::CreateHTML, HTML::LinkExtor THANKS
Some code was inspired by, and tests borrowed from, Miyagawa's HTML::ResolveLink. AUTHOR
Shawn M Moore, "<sartak@bestpractical.com>" LICENSE
Copyright 2008-2010 Best Practical Solutions, LLC. HTML::RewriteAttributes is distributed under the same terms as Perl itself. perl v5.10.1 2010-11-18 HTML::RewriteAttributes(3pm)
All times are GMT -4. The time now is 03:13 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy