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How to implement Rate It feature in Android App

... I implemented this a while back, to some extent. It is impossible to know whether or not a user has rated an app, to prevent ratings from becoming a currency (some developers might add an option like "Rate this app and get so and so in the app for free"). The class I wrote provides three butt...
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When is -XAllowAmbiguousTypes appropriate?

...ins why sugarSym doesn't require the AllowAmbiguousTypes extension. Let's now look at sugar. The first thing I notice is that the compiler is not complaining about an ambiguous type, but rather, about overlapping instances: Overlapping instances for SyntacticN b fi arising from the ambiguity che...
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Creating an empty file in C#

...out 5 minutes ago too! I just googled to see how other programmers did it. Now I'm using File.Create(filename).Dispose(); instead of. – Jack Mar 22 '15 at 18:31 1 ...
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Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2

...;- data.frame(a = c(1:3, 1), b = c(letters[1:3], "c")). Leave a1 the same. Now try the comparison. It's not clear to me even in reading the options what the proper way is to list only common elements. – Hendy Aug 8 '13 at 2:59 ...
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Unable to find valid certification path to requested target - error even after cert imported

...etRead0(Native Method) at java.net.SocketInputStream.socketRead(Unknown Source) How I can I fix this – Renjith Krishnan Feb 27 '17 at 5:50 ...
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How do I run multiple background commands in bash in a single line?

...e efficient because they don't fork a new subshell. In this case I don't know if it makes a difference. share | improve this answer | follow | ...
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Why would json_encode return an empty string

... After three days of debugging, I could kiss you right now. – AJB Apr 23 '16 at 2:04 3 ...
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How do arrays in C# partially implement IList?

So as you may know, arrays in C# implement IList<T> , among other interfaces. Somehow though, they do this without publicly implementing the Count property of IList<T> ! Arrays have only a Length property. ...
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Color text in terminal applications in UNIX [duplicate]

...ne for finding this mistake and thanks for the feedback. I'll fix it right now ;). – David Guyon Apr 26 '16 at 14:24 T...
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Android Whatsapp/Chat Examples [closed]

...e becoming a separate project, it was only the engine powering Wazapp. Now that it matured enough, it was separated into a separate project, allowing anyone to build their own Whatsapp client on top of it. Having such a popular client as Wazapp, built on Yowsup, helped bring the project in...