DZone Snippets is a public source code repository. Easily build up your personal collection of code snippets, categorize them with tags / keywords, and share them with the world


  • submit to reddit

Recent Snippets

                    No need to use temp var.
a, b = b, a
                    I am really impressed by this.

import messaging
messaging.sms_send(number, text)
                    Reading remote data is easy in python.

from urllib import *
url = ''
html = urlretrieve(url).read()
                    I am trying to use the site.
Here's my first program.

print "hello world"
                    this is a very basic script for seperating out values and units.  this is helpful for changing values such as or border.

if => '15px'
splitUnit( ) => [15,'px']

function splitUnit(e)
*	takes a string and seperates 'px or 'em' from it
*	could be streamlined to simply seperate the last two characters, but that could cause errors if used sloppily
	if( e && ( length = /px/ ) ) ) {var eUnit = 'px'; var eValue = e.substr( 0, length );}
	else if( e && ( length = /em/ ) ) ) {var eUnit = 'em'; var eValue = e.substr( 0, length );}
	else return false;
	return new Array( eValue, eUnit );
                    An equivalent of the other find-replace, except it's a one-liner that generates no temp files, and is more flexible:

perl -pi -e 's/find/replace/g' *.txt

Or, to change matching files in a hierarchy:

find . -name '*.txt' |xargs perl -pi -e 's/find/replace/g'
                    Assuming you have mod_rewrite and AllowOverride activated, throw this in the .htaccess file for the directory you don't want to be Slashdotted:

RewriteEngine On
RewriteCond %{HTTP_REFERER} ^.*slashdot.*$
RewriteRule .* - [F]

This all assumes the editors actually check the links before posting the story, but this should reasonably mean no-one on Slashdot can link to you, even if it's a bit over the top.                
                    This will output the data from a URL to a file and then display the data in that file.

wget -q -O file "url"; cat file
                    a function to convert common used bbcode tags to html... as usually used in message boards and some blog software.

it handles img, email, link, b, u and i tags...

for example
will become:
<a href="" target="_blank">blah</a>

function ubbcode($posting) {
	$posting=eregi_replace("\[img\]([^\[]+)\[/img\]","<img src=\"\\1\" border=\"0\">",$posting);
	$posting=eregi_replace("\[email\]([^\[]+)\[/email\]","<a href=\"mailto:\\1\">\\1</a>",$posting);
	$posting=eregi_replace("\[email=([^\[]+)\]([^\[]+)\[/email\]","<a href=\"mailto:\\1\">\\2</a>",$posting);
	$posting=eregi_replace("\[url=([^\[]+)\]([^\[]+)\[/url\]","<a href=\"\\1\" target=\"_blank\">\\2</a>",$posting);
	$posting=eregi_replace("\[url\]([^\[]+)\[/url\]","<a href=\"\\1\" target=\"_blank\">\\1</a>",$posting);

    return $posting;
find . -type f \! -path "*svn*" -exec dos2unix {} \;

My local dev box is Windows but my prod server is BSD. To make sure all files are in the correct format (LF rather than CRLF), I run this after doing my svn update on the server.

Hat tip: Ryan @ Textdrive.