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What regular expression will match valid international phone numbers?

... \+(9[976]\d|8[987530]\d|6[987]\d|5[90]\d|42\d|3[875]\d| 2[98654321]\d|9[8543210]|8[6421]|6[6543210]|5[87654321]| 4[987654310]|3[9643210]|2[70]|7|1)\d{1,14}$ Is the correct format for matching a generic international phone number. I replaced the US land line centric international access c...
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How to format a number 0..9 to display with 2 digits (it's NOT a date)

I'd like to always show a number under 100 with 2 digits (example: 03, 05, 15...) 5 Answers ...
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How to delete multiple values from a vector?

I have a vector like: a = c(1:10) and I need to remove multiple values, like: 2, 3, 5 8 Answers ...
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Minimum and maximum date

... 179 From the spec, §15.9.1.1: A Date object contains a Number indicating a particular instant in...
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Splitting a list into N parts of approximately equal length

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What are the mathematical/computational principles behind this game?

... 150 Finite Projective Geometries The axioms of projective (plane) geometry are slightly differen...
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efficient circular buffer?

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Evaluating a mathematical expression in a string

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How to use Regular Expressions (Regex) in Microsoft Excel both in-cell and loops

...re used for Pattern Matching. To use in Excel follow these steps: Step 1: Add VBA reference to "Microsoft VBScript Regular Expressions 5.5" Select "Developer" tab (I don't have this tab what do I do?) Select "Visual Basic" icon from 'Code' ribbon section In "Microsoft Visual Basic for Applicat...
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What is :: (double colon) in Python when subscripting sequences?

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