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Scala: What is a TypeTag and how do I use it?

...h are both much simpler to use and well integrated into the new Reflection API. With them we can solve the problem above about path-dependent-types elegantly: scala> def m(f: Foo)(b: f.Bar)(implicit ev: TypeTag[f.Bar]) = ev m: (f: Foo)(b: f.Bar)(implicit ev: reflect.runtime.universe.TypeTag[f.Ba...
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400 vs 422 response to POST of data

...he correct status code to return on different scenarios with a "REST-like" API that I'm working on. Let's say I have a end point that allows POST'ing purchases in JSON format. It looks like this: ...
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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 TextView: setting the background color dynamically doesn't work

... The android API is really something, why couldn't it throw an error? – Tawani Sep 23 '09 at 17:05 54 ...
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AngularJS: how to implement a simple file upload with multipart form?

...ag&drop, file progress and file upload for non-HTML5 browsers with FileAPI flash shim <div ng-controller="MyCtrl"> <input type="file" ngf-select="onFileSelect($files)" multiple> </div> JS: //inject angular file upload directive. angular.module('myApp', ['ngFileUpload']); ...
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Google Maps V3 - How to calculate the zoom level for a given bounds

...ay to calculate the zoom level for a given bounds using the Google Maps V3 API, similar to getBoundsZoomLevel() in the V2 API. ...
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Posting a File and Associated Data to a RESTful WebService preferably as JSON

... I'm having one of those nights. In an application I am developing RESTful API and we want the client to send data as JSON. Part of this application requires the client to upload a file (usually an image) as well as information about the image. ...
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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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Avoiding memory leaks with Scalaz 7 zipWithIndex/group enumeratees

... come as little consolation for anyone who's stuck with the older iteratee API, but I recently verified that an equivalent test passes against the scalaz-stream API. This is a newer stream processing API that is intended to replace iteratee. For completeness, here's the test code: // create a stre...
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Chrome: timeouts/interval suspended in background tabs?

... Well, you can create Workers, service workers and use the canvas API using a data-url. new Worker('data:text/javascript,(' + function myWorkerCode () { /*...*/ } + '()'). It's also a nice way to check if you have import expression support: try { eval('import("data:text/javascript,void 0")'...