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What are the downsides to using Dependency Injection? [closed]

...ou are a software developer - not an ivory tower builder. Relevant Links http://thedailywtf.com/Articles/The_Inner-Platform_Effect.aspx http://www.joelonsoftware.com/articles/fog0000000018.html Probably the simplest form of dependency injection (don't laugh) is a parameter. The dependent code ...
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mongoDB/mongoose: unique if not null

...ield with a value of null, only multiple docs without an email field. See http://docs.mongodb.org/manual/core/index-sparse/ share | improve this answer | follow ...
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Which is best way to define constants in android, either static class, interface or xml resource?

...2017. */ public class Constant { public static final String SERVER = "http://192.168.0.100/bs.dev/nrum"; // public static final String SERVER = "http://192.168.100.2/bs.dev/nrum"; public static final String API_END = SERVER + "/dataProvider"; public static final String NEWS_API = API...
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PHP: Convert any string to UTF-8 without knowing the original character set, or at least try

...distinguishable occurrences. Take the ISO-8859-1 charset vs ISO-8859-15 ( http://en.wikipedia.org/wiki/ISO/IEC_8859-15#Changes_from_ISO-8859-1 ) There's only a handful of different characters, and to make it worse, they're represented by the same bytes. There is no way to detect, being given a str...
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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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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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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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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...