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How to get the Android device's primary e-mail address

... ... } } Note that this requires the GET_ACCOUNTS permission: <uses-permission android:name="android.permission.GET_ACCOUNTS" /> More on using AccountManager can be found at the Contact Manager sample code in the SDK. Method B: Use ContactsContract.Profile (API level 14+) As of...
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Can I use the range operator with if statement in Swift?

Is it possible to use the range operator ... and ..< with if statement. Maye something like this: 6 Answers ...
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Most efficient conversion of ResultSet to JSON?

The following code converts a ResultSet to a JSON string using JSONArray and JSONObject . 14 Answers ...
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Using Pairs or 2-tuples in Java [duplicate]

...va but a custom one might be as easy as the following: public class Tuple<X, Y> { public final X x; public final Y y; public Tuple(X x, Y y) { this.x = x; this.y = y; } } Of course, there are some important implications of how to design this class further regarding e...
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Convert list to array in Java [duplicate]

...rence types. For arrays of primitive types, use the traditional way: List<Integer> list = ...; int[] array = new int[list.size()]; for(int i = 0; i < list.size(); i++) array[i] = list.get(i); Update: It is recommended now to use list.toArray(new Foo[0]);, not list.toArray(new Foo[list...
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How to write iOS app purely in C

... Damn, it took me a while but I got it: main.c: #include <CoreFoundation/CoreFoundation.h> #include <objc/runtime.h> #include <objc/message.h> // This is a hack. Because we are writing in C, we cannot out and include // <UIKit/UIKit.h>, as that uses Object...
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How do I split a string by a multi-character delimiter in C#?

...[stop]"; string[] stringSeparators = new string[] {"[stop]"}; string[] result; // ... result = source.Split(stringSeparators, StringSplitOptions.None); foreach (string s in result) { Console.Write("'{0}' ", String.IsNullOrEmpty(s) ? "<>" : s); } ...
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In which order should floats be added to get the most precise result?

...al. If the small values come first, they will at least sum to something, although even then I have 2^30 of them, whereas after 2^25 or so I'm back in the situation where each one individually isn't affecting the total any more. So I'm still going to need more tricks. That's an extreme case, but in...
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Jackson JSON custom serialization for certain fields

...oriteNumber: } public class IntToStringSerializer extends JsonSerializer<Integer> { @Override public void serialize(Integer tmpInt, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) th...
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403 Forbidden vs 401 Unauthorized HTTP responses

...s ranges or files in my webroot that I don't want direct access to (i.e. a script must serve them). – Kyle May 9 '13 at 13:20  |  show 22 more...