A text string pattern matching mechanism. Usually applied to individual lines of text, such as from a simple text file, where the regular expression (sometimes abbreviated as RE) pattern can be used to precisely specify which lines ought to match and which shouldn't. The more complicated REs may look very confusing to people who don't know them, as they look more like a random string of letters and other characters without any obvious meaning.
Commonly they're enclosed between slashes (/like this/), because that's how they were used in many ancient Unix tools. They can also be used for text substitution, for example with the s/ construct. A common operator specifying that a RE will follow is the tilde (~).
The Perl language makes heavy use of regular expressions, and the grep tool also searches by REs. SED and AWK are some older tools also using REs.
REs come in two forms: Basic REs and Extended REs, varying slightly in syntax and possible contructs. Perl extens the Extended REs even further and has defined the standard "Perl Compatible REs" (PCRE).
Commonly they're enclosed between slashes (/like this/), because that's how they were used in many ancient Unix tools. They can also be used for text substitution, for example with the s/ construct. A common operator specifying that a RE will follow is the tilde (~).
The Perl language makes heavy use of regular expressions, and the grep tool also searches by REs. SED and AWK are some older tools also using REs.
REs come in two forms: Basic REs and Extended REs, varying slightly in syntax and possible contructs. Perl extens the Extended REs even further and has defined the standard "Perl Compatible REs" (PCRE).
"some example string" =~ /^s*.*e+.*(?:x.* )?.*?g$/
result: 1 (because the regular expression between the // matches the string)
result: 1 (because the regular expression between the // matches the string)
by DJMoses May 27, 2009
Get the regular expression mug.Dumb bitch. She also has to attack that fox's conscience. She yells at it, repeatedly, telling it how bad, and mean it is for stealing some useless shit that she has, that she can find again in about 10 minutes. I think her and the monkey are partners. That monkey won't shut the fuck up.
Dora the Explorer, you're fucking gonna die. First I'm gonna kill your god damn parents, and skin that monkey RIGHT IN FRONT OF YOU.
Dora the Explorer, you're fucking gonna die. First I'm gonna kill your god damn parents, and skin that monkey RIGHT IN FRONT OF YOU.
Boots: Holy shit Dora! I'm trippin' BALLS!
Dora: *Laughs* Me too...
Boots: Oh shit. They're filming us.
Dora: Fuck! Hey guys, get that map out. Don't just pull it out and look at it, start chanting 'map'.
Boots: Ok. lets go to that Windy Canyon.
Dora: Is it windy there?
Boots: Lalalalala! You're Dora the Explorer!
Dora: Hehe... Boots... You're so fucked up...
Dora: *Laughs* Me too...
Boots: Oh shit. They're filming us.
Dora: Fuck! Hey guys, get that map out. Don't just pull it out and look at it, start chanting 'map'.
Boots: Ok. lets go to that Windy Canyon.
Dora: Is it windy there?
Boots: Lalalalala! You're Dora the Explorer!
Dora: Hehe... Boots... You're so fucked up...
by im a goldfish September 6, 2007
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by Joe's Girl December 1, 2005
Get the express-hole mug.Internet Explorer is an insidious web browser that comes installed on Microsoft operating systems. It crashes all the time and then annoys you with prompts asking if you want to send error reports. It also has a lot of security vulnerabilities, and using it is the easiest way to get a virus, trojan, or other malware.
As if that weren't bad enough, Internet Explorer is so integrated into the system that removing it can cause major problems.
As if that weren't bad enough, Internet Explorer is so integrated into the system that removing it can cause major problems.
by am529~ June 3, 2010
Get the Internet Explorer mug.as in internet explorer sucks my balls.. cant even close the bitch when it doesnt respond.. unkown error closing application unexpectadly would you like to further delay yourself by trying to send a message to our tech people that will take another hour because no one in the world uses microsoft outlook as their main emailing program and youaccidently hit "yes" instead of the "suck my balls order me a macbook" button and now it has try to load and then tell me that i deleted some applications neccessary to open it.........shit..
by andyx March 3, 2011
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