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convert_tz returns null

...ql In Windows environment, 1. download Time zone description tables from http://dev.mysql.com/downloads/timezones.html 2. Stop MySQL server 3. Put then inside Mysql installation package (ie. C:\Program Files\MySQL\data\mysql)` 4. Start MySQL server ..Your work is finished.. If still you are g...
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CSS3 Transparency + Gradient

...dern browsers (starting from Chrome 26, Opera 12.1, IE 10 and Firefox 16): http://caniuse.com/#feat=css-gradients background: linear-gradient(to bottom, rgba(0, 0, 0, 1), rgba(0, 0, 0, 0)); This renders a gradient, starting from solid black at the top, to fully transparent at the bottom. Documen...
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Get the height and width of the browser viewport without scrollbars using jquery?

... $(window).height(); $(window).width(); More info http://api.jquery.com/height/ http://api.jquery.com/width/ Using jQuery is not essential for getting those values, however. Use document.documentElement.clientHeight; document.documentElement.clientWidth; to get sizes e...
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Why do my list item bullets overlap floating elements

... position: relative; left: 1em; padding-right: 1em; }​ http://jsfiddle.net/mblase75/TJELt/ I prefer this technique, since it works when the list needs to flow around the floating image, while the overflow: hidden technique will not. However, it's also necessary to add padding-ri...
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Disable hover effects on mobile browsers

...(i.e on a device with both mouse and touch interface). Further Reading http://jsfiddle.net/macfreek/24Z5M/. Test the above solution for yourself in this sandbox. http://www.macfreek.nl/memory/Touch_and_mouse_with_hover_effects_in_a_web_browser. This same answer, with a bit more background. https...
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What is the difference between screenX/Y, clientX/Y and pageX/Y?

...in the browser. For a visual on which browsers support which properties: http://www.quirksmode.org/dom/w3c_cssom.html#t03 w3schools has an online Javascript interpreter and editor so you can see what each does http://www.w3schools.com/jsref/tryit.asp?filename=try_dom_event_clientxy <!DOC...
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Responsively change div size keeping aspect ratio [duplicate]

... its aspect ratio.</p> </div> I've put together a demo here: http://codepen.io/tcmulder/pen/iqnDr EDIT: Now, bumming off of Isaac's idea, it's easier in modern browsers to simply use vw units to force aspect ratio (although I wouldn't also use vh as he does or the aspect ratio will...
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Install Marketplace plugin on Eclipse Juno

...t Help/Install new software... from the menu, select the Juno update site (http://download.eclipse.org/releases/juno), and then look for the Marketplace client - it is in the General Purpose Tools category. share | ...
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Use cases for the 'setdefault' dict method

..., because it only creates keys on explicit access. Think you use something HTTP-ish with many headers -- some are optional, but you want defaults for them: headers = parse_headers( msg ) # parse the message, get a dict # now add all the optional headers for headername, defaultvalue in optional_head...
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Class.forName() vs ClassLoader.loadClass() - which to use for dynamic loading? [duplicate]

... return forName0(className, true, ClassLoader.getCallerClassLoader()); } http://docs.oracle.com/javase/1.4.2/docs/api/java/lang/ClassLoader.html http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html#forName(java.lang.String) Hint: Primordial class loader http://docs.oracle.com/javas...