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Title Test Find Pattern Title
does not allow IP for domain name : [email protected] does not allow litteral addresses "hello, how are you?" allows numeric domain names after the last "." minimum 2 letters
Author Rating: The rating for this expression. bilou mcgyver
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Date: 12/7/2021 9:25:04 AM
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Date: 11/18/2021 9:46:30 AM
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Title: Serviced Apartments Manchester –
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Date: 7/30/2015 5:58:40 AM
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Title: Suggested Improvement
Name: Adiv
Date: 6/25/2015 11:13:42 PM
The expression can be made case insensitive with a mode switch preceding the pattern to be matched. Using (?i) before the regex enables [A-Za-z0-9] to be shortened to [a-z\d], replacing 0-9 with the shorthand \d. To match all characters in the class \w except an underscore (_), you can use character class subtraction: [\w-[_]] to replace the expression [A-Za-z0-9]

Title: rtytry
Name: rtyrty
Date: 6/21/2012 7:18:46 AM

Title: a problem with the pattern
Name: Giulio Di Gio Battista
Date: 11/12/2008 7:09:49 AM
by using the .net RegEx if you give "[email protected]" as input the method IsMatch will hang indefinetely Please let me know if you solve the problem Regards, Giulio Di Gio Battista ([email protected])

Title: does not with gmail "+"
Name: keshar
Date: 10/1/2008 2:22:17 PM
gmail allows for the following: [email protected] This was my fix: ^[A-Za-z0-9](([_\.\-\+]?[a-zA-Z0-9]+)*)@([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})$

Title: Finally!
Name: Love to avoid work!
Date: 8/9/2007 10:54:59 AM
Here's a regex that actually validates email addresses like this: [email protected] Took a long time to find one that did (I'm lazy)

Title: Short and mathces +, - and _
Name: Juan Manuel Caicedo
Date: 3/6/2005 1:37:11 PM
I just fixed Chris' shorten regep to match +, - and _ (underscore) ^[\w](([_\.\-\+]?[\w]+)*)@([\w]+)(([\.-]?[\w]+)*)\.([A-Za-z]{2,})$

Title: fails on + too
Name: Lorrin
Date: 12/1/2004 5:50:34 PM
[email protected] fails to match.

Title: what do you think of that regex?
Name: Matthias
Date: 10/28/2004 8:09:03 PM

Title: underscore problem
Name: Jan
Date: 9/24/2004 3:07:56 AM
Does not match valid e-mail addresses like [email protected] oder [email protected]

Title: Runs Too Long
Name: titltn21
Date: 9/3/2004 6:03:14 PM
Ran into an issue during testing. Performance took a major hit and actually took a box down. Test Case Results: Input a nonvalid email (only /w) and as the length grows so does the processing time as shown below. Testing this expression on produced similiar time outs. Below are the time stamped results when looping each test expression. NOW:[m].[s].[ms] 45.38.627 ...Processing Bad Email [11]ABCDE 45.38.697 ...Processing Bad Email [10]ABCDEABCDE 45.38.697 ...Processing Bad Email [9]ABCDEABCDEABCDE 45.38.707 ...Processing Bad Email [8]ABCDEABCDEABCDEABCDE 45.39.66 ...Processing Bad Email [7]ABCDEABCDEABCDEABCDEABCDE 45.50.561 ...Processing Bad Email [6]ABCDEABCDEABCDEABCDEABCDEABCDE [Case 6 too minutes to execute. 52-45=7 min] 52.41.144 ...Processing Bad Email [5]AB.DE 52.41.144 ...Processing Bad Email [4]AB.DEAB.DE 52.41.144 ...Processing Bad Email [3]AB.DEAB.DEAB.DE 52.41.144 ...Processing Bad Email [2]AB.DEAB.DEAB.DEAB.DE 52.41.144 ...Proc

Title: How close is this to what is valid for the RFC?
Name: Pete
Date: 9/2/2004 1:21:48 PM
How close is this to what is valid for the RFC for e-mail addresses? (I think it may be RFC 822 but not sure - you know thw one I mean)?

Title: Das
Name: Anamitra
Date: 5/21/2004 3:10:53 AM
The expression has worked fine for me

Title: rastas
Name: rastas
Date: 5/13/2004 4:09:30 PM

Title: Amazing
Name: Saleem Mirza
Date: 1/13/2004 2:57:57 AM

Title: Shorten this puppy...
Name: Chris
Date: 1/8/2004 7:40:39 PM
This regex can be shortened a bit by replacing all [a-zA-Z0-9] (or variant thereof) with \w. ^[\w](([_\.-]?[\w]+)*)@([\w]+)(([\.-]?[\w]+)*)\.([A-Za-z]{2,})$

Title: limit number of characters
Name: limiting_field
Date: 12/29/2003 3:41:19 PM
how do i limit this regexp to up to 10 characters in length? i tried ^([A-Za-z0-9](([_\.\-]?[a-zA-Z0-9]+)*)@([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})){0,10}$ and that didnt work

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