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Image Greyscale with CSS & re-color on mouse-over?

...kground: url(http://4.bp.blogspot.com/-IzPWLqY4gJ0/T01CPzNb1KI/AAAAAAAACgA/_8uyj68QhFE/s400/a2cf7051-5952-4b39-aca3-4481976cb242.jpg); } svg image { transition: all .6s ease; } svg image:hover { opacity: 0; } <p>Firefox, Chrome, Safari, IE6-9</p> <img class="grayscale...
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How to create a density plot in matplotlib?

... Sven has shown how to use the class gaussian_kde from Scipy, but you will notice that it doesn't look quite like what you generated with R. This is because gaussian_kde tries to infer the bandwidth automatically. You can play with the bandwidth in a way by changing the...
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How can I change UIButton title color?

... With Swift 5, UIButton has a setTitleColor(_:for:) method. setTitleColor(_:for:) has the following declaration: Sets the color of the title to use for the specified state. func setTitleColor(_ color: UIColor?, for state: UIControlState) The following Playgro...
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Environment variables for java installation

...ironment variables (== environment variables of type user variables) JAVA_HOME : C:\Program Files\Java\jdk1.8.0_112 JDK_HOME : %JAVA_HOME% JRE_HOME : %JAVA_HOME%\jre CLASSPATH : .;%JAVA_HOME%\lib;%JAVA_HOME%\jre\lib PATH : your-unique-entries;%JAVA_HOME%\bin (make sure that the longish your...
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Detect current device with UI_USER_INTERFACE_IDIOM() in Swift

What is the equivalent of UI_USER_INTERFACE_IDIOM() in Swift to detect between iPhone and iPad? 17 Answers ...
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What do the terms “CPU bound” and “I/O bound” mean?

...: #define SIZE 1000000000 unsigned int is[SIZE]; unsigned int sum = 0; size_t i = 0; for (i = 0; i < SIZE; i++) /* Each one of those requires a RAM access! */ sum += is[i] Parallelizing that by splitting the array equally for each of your cores is of limited usefulness on common modern d...
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How to detect that animation has ended on UITableView beginUpdates/endUpdates?

...targeting iOS 11 and above, you should use UITableView.performBatchUpdates(_:completion:) instead: tableView.performBatchUpdates({ // delete some cells // insert some cells }, completion: { finished in // animation complete }) ...
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How does one generate a random number in Apple's Swift language?

...swered Jun 3 '14 at 4:32 Catfish_ManCatfish_Man 38.6k1111 gold badges6363 silver badges8181 bronze badges ...
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Difference between Ctrl+Shift+F and Ctrl+I in Eclipse

...s are at the beginning. It doesn't work if you have something like int i = _____5; ( _ = empty space ). Only Ctrl + Shift + F will convert this line to int i = 5;. – ROMANIA_engineer Oct 26 '14 at 7:54 ...
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How can I correctly prefix a word with “a” and “an”?

...of this, such as this one in PHP by Jaimie Sirovich : function aOrAn($next_word) { $_an = array('hour', 'honest', 'heir', 'heirloom'); $_a = array('use', 'useless', 'user'); $_vowels = array('a','e','i','o','u'); $_endings = array('ly', 'ness', 'less', 'lessly', 'ing', 'ally',...