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What is Weak Head Normal Form?
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404
I'll try to give an explanation in simple terms. As others have pointed out, head normal form ...
How to validate an email address in PHP
...\\x23-\\x5B\\x5D-\\x7F]|(?:\\x5C[\\x00-\\x7F]))*\\x22)))*@(?:(?:(?!.*[^.]{64,})(?:(?:(?:xn--)?[a-z0-9]+(?:-+[a-z0-9]+)*\\.){1,126}){1,}(?:(?:[a-z][a-z0-9]*)|(?:(?:xn--)[a-z0-9]+))(?:-+[a-z0-9]+)*)|(?:\\[(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(?:(?!(?:.*[a-f0-9][:\\]]){7,})(?:[a-f0-9]{1...
Regex Last occurrence?
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answered Dec 4 '11 at 11:30
stemastema
75.9k1616 gold badges8686 silver badges116116 bronze badges
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Using DISTINCT and COUNT together in a MySQL Query
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edited Sep 8 '14 at 10:19
user3414693
answered Jun 16 '09 at 15:47
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In Java, what is the best way to determine the size of an object?
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470
You can use the java.lang.instrument package
Compile and put this class in a JAR:
import jav...
Xcode 4 - “Valid signing identity not found” error on provisioning profiles on a new Macintosh insta
I had a Macintosh I used to develop iPhone apps with using XCode 4.
I now have a new Macintosh with a new install of... everything.
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How do I concatenate strings in Swift?
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answered Jun 4 '14 at 9:55
FogmeisterFogmeister
68.3k3535 gold badges180180 silver badges266266 bronze badges
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Linux command or script counting duplicated lines in a text file?
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48
Almost the same as borribles' but if you add the d param to uniq it only shows duplicates.
sor...
Get the week start date and week end date from week number
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answered Aug 12 '09 at 16:14
Robin DayRobin Day
92.5k2222 gold badges110110 silver badges160160 bronze badges
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Regular expression to match standard 10 digit phone number
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^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$
Matches the following
123-456-7890
(123) 456-7890
123 456 7890
123.456.7890
+91 (123) 456-7890
If you do not want a match on non-US numbers use
^(\+0?1\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$
Update :
As noticed by ...