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Where can I learn how to write C code to speed up slow R functions? [closed]

...aterial that's aimed at new users who are not familiar with the existing C api. – hadley Nov 5 '10 at 14:08 2 ...
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Android: How can I get the current foreground activity (from a service)?

... semifake on api 21 As of LOLLIPOP, this method is no longer available to third party applications: the introduction of document-centric recents means it can leak person information to the caller. For backwards compatibility, it will stil...
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Change “on” color of a Switch

... API 23+: switchInput.setThumbTintList(buttonStates); works for Nougat as well. API 21-22: Use the DrawableCompat as suggested by @Alexey. The switchInput.setButtonTintList(buttonStates); didn't work for me, it didn't colo...
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Pass array to mvc Action via AJAX

... None of these answers worked for me (maybe because my controller was an API controller?), but I found my solution in the following SO answer: stackoverflow.com/a/11100414/1751792 – Lopsided Aug 10 '16 at 23:31 ...
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Java: random long number in 0

... Starting from Java 7 (or Android API Level 21 = 5.0+) you could directly use ThreadLocalRandom.current().nextLong(n) (for 0 ≤ x < n) and ThreadLocalRandom.current().nextLong(m, n) (for m ≤ x < n). See @Alex's answer for detail. If you are stuck ...
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How to POST JSON Data With PHP cURL?

...t from using a third-party library instead of interfacing with the Shopify API directly yourself. share | improve this answer | follow | ...
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What does the function then() mean in JavaScript?

...to make the server call): // Fetch some server configuration xhrGET('/api/server-config', function(config) { // Fetch the user information, if he's logged in xhrGET('/api/' + config.USER_END_POINT, function(user) { // Fetch the items for the user xhrGET('...
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Choosing Java vs Python on Google App Engine

...code, but that's less important than being able to perform such tasks as "rapidly apply XSLT transformation" in SOME way!-). I know I'd star such an issue if well phrased (especially in a language-independent way). Last but not least: remember that you can have different version of your app (using ...
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What is the difference between log4net and ELMAH?

... Log4Net is a general purpose logging framework with an API intended to be used within your application (web, console, dll, etc.). logger.Debug("Some low level debug message..."); logger.Info("Some basic info"); logger.Warn("Some business logic problem, but not critical"); logger...
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HTTP GET request in JavaScript?

...e X from AJAX ~ Asynchronous JavaScript and XML. Also, good point re the "API that has and ECMAScript binding" is due to the fact that JavaScript can be in many things, other than browsers supporting HTTP (e.g. like Adobe Reader ...) Good thing to remember so hats-off to PointedEars. ...