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Two color borders

...utline is inside of the shadow; in FireFox it is outside, so -moz-outline: 0 is useful to ensure that you don't get a gnarly line around your beautiful CSS drop shadow). .someclass { border: 1px solid blue; outline: 1px solid darkblue; } Edit: Some people have remarked that outline doesn't ji...
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Gray out image with CSS?

...age" src="something.jpg" /> </div> css: #myImage { opacity: 0.4; filter: alpha(opacity=40); /* msie */ } /* or */ #wrapper { opacity: 0.4; filter: alpha(opacity=40); /* msie */ background-color: #000; } ...
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How to validate an Email in PHP?

...LTER_VALIDATE_EMAIL) PHP Manual filter_var() Available in PHP >= 5.2.0 If you don't want to change your code that relied on your function, just do: function isValidEmail($email){ return filter_var($email, FILTER_VALIDATE_EMAIL) !== false; } Note: For other uses (where you need Regex)...
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Regular expression for matching latitude/longitude coordinates?

... answered Aug 19 '10 at 3:38 Eric CEric C 3,55633 gold badges2828 silver badges2626 bronze badges ...
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deleting rows in numpy array

... [7,8,9]]) To delete the first row, do this: x = numpy.delete(x, (0), axis=0) To delete the third column, do this: x = numpy.delete(x,(2), axis=1) So you could find the indices of the rows which have a 0 in them, put them in a list or a tuple and pass this as the second argument of the...
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Modifying a subset of rows in a pandas dataframe

...fy this DataFrame (or create a copy) so that B is always NaN whenever A is 0. How would I achieve that? 5 Answers ...
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Any reason not to use '+' to concatenate two strings?

... | edited Jan 10 '16 at 12:44 seriousdev 6,91188 gold badges4040 silver badges5050 bronze badges ...
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How to validate an e-mail address in swift?

...ValidEmail(_ email: String) -> Bool { let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}" let emailPred = NSPredicate(format:"SELF MATCHES %@", emailRegEx) return emailPred.evaluate(with: email) } for versions of Swift earlier than 3.0: func isValidEmail(e...
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How can I check if a string represents an int, without using try/except?

...t;> print RepresentsInt("+123") True >>> print RepresentsInt("10.0") False It's going to be WAY more code to exactly cover all the strings that Python considers integers. I say just be pythonic on this one. sh...
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How to decide font color in white or black depending on background color?

...overall intensity of the color and choose the corresponding text. if (red*0.299 + green*0.587 + blue*0.114) > 186 use #000000 else use #ffffff The threshold of 186 is based on theory, but can be adjusted to taste. Based on the comments below a threshold of 150 may work better for you. Edit: T...