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Encoding as Base64 in Java

... Base64.getEncoder().encodeToString(string.getBytes(StandardCharsets.UTF_8)) Here is a short, self-contained complete example: import java.nio.charset.StandardCharsets; import java.util.Base64; public class Temp { public static void main(String... args) throws Exception { final Str...
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Rendering JSON in controller

... You'll normally be returning JSON either because: A) You are building part / all of your application as a Single Page Application (SPA) and you need your client-side JavaScript to be able to pull in additional data without fully reload...
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Determine device (iPhone, iPod Touch) with iOS

... @AnilSivadas: UI_USER_INTERFACE_IDIOM() is safe to use in apps that still support iOS < 3.2: it is a macro in UIDevice.h specifically written to default to UIUserInterfaceIdiomPhone on such older iOS versions. – mkle...
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Disabling browser print options (headers, footers, margins) from page?

...t consistent. Safari still does not support setting printer page margin at all, but all the other major browsers now support it. With the @page directive, you can specify printer margin of the page (which is not the same as normal CSS margin of an HTML element): <html xmlns="http://www.w3.org/199...
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Entity Framework: There is already an open DataReader associated with this Command

I am using Entity Framework and occasionally i will get this error. 17 Answers 17 ...
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Check play state of AVPlayer

Is there a way to know whether an AVPlayer playback has stalled or reached the end? 11 Answers ...
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How to set cookie in node js using express framework?

...important! }); // let static middleware do its job app.use(express.static(__dirname + '/public')); Also, middleware needs to either end a request (by sending back a response), or pass the request to the next middleware. In this case, I've done the latter by calling next() when the cookie has been...
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How to show all privileges from a user in oracle?

Can someone please tell me how to show all privileges/rules from a specific user in the sql-console? 6 Answers ...
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E11000 duplicate key error index in mongodb mongoose

... null value. In other words, a sparse index is ok with multiple documents all having null values. sparse indexes From comments: Your error says that the key is named mydb.users.$email_1 which makes me suspect that you have an index on both users.email and users.local.email (The former being old an...
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How to handle button clicks using the XML onClick within Fragments

... That's what I'm doing now essentially but it is a lot messier when you have multiple fragments that each need to receive click events. I'm just aggravated with fragments in general because paradigms have dissolved around them. – smith32...