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How to validate an email address in PHP

... 10 Answers 10 Active ...
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How can I get the client's IP address in ASP.NET MVC?

...e { szIP = szXForwardedFor; if (szIP.IndexOf(",") > 0) { string [] arIPs = szIP.Split(','); foreach (string item in arIPs) { if (!isPrivateIP(item)) { return item; ...
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How to initialize a two-dimensional array in Python?

... \ for i in range (0, 10): \ new = [] \ can be replaced } this too for j in range (0, 10): } with a list / new.append(foo) / comprehension / twod...
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Checking to see if one array's elements are in another array in PHP

... 205 You can use array_intersect(). $result = !empty(array_intersect($people, $criminals)); ...
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Formatting floats without trailing zeros

... Me, I'd do ('%f' % x).rstrip('0').rstrip('.') -- guarantees fixed-point formatting rather than scientific notation, etc etc. Yeah, not as slick and elegant as %g, but, it works (and I don't know how to force %g to never use scientific notation;-). ...
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What does axis in pandas mean?

... It specifies the axis along which the means are computed. By default axis=0. This is consistent with the numpy.mean usage when axis is specified explicitly (in numpy.mean, axis==None by default, which computes the mean value over the flattened array) , in which axis=0 along the rows (namely, index ...
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Command-line Unix ASCII-based charting / plotting tool

... + *+ * + * * + sin(x) ****** + 0.8 ++ * * * * * * ++ | * * * * * * | 0.6 ++ * * * * * *...
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How to validate date with format “mm/dd/yyyy” in JavaScript?

...s var parts = dateString.split("/"); var day = parseInt(parts[1], 10); var month = parseInt(parts[0], 10); var year = parseInt(parts[2], 10); // Check the ranges of month and year if(year < 1000 || year > 3000 || month == 0 || month > 12) return false; ...
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navbar color in Twitter Bootstrap

...can I change the background color of the navbar of the Twitter Bootstrap 2.0.2? How can I change color of all the elements of the navbar to reflect the background color? ...
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How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]

... don't get is how multiple clients can simultaneously connect to say port 80. I know each client has a unique (for their machine) port. Does the server reply back from an available port to the client, and simply state the reply came from 80? How does this work? ...