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package R does not exist

...kage.R; Of course, replacing your.app.package with your app package. In all the classes which use R resource references, remove any other import with .R, i.e. import android.R; share | improve th...
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What are the basic rules and idioms for operator overloading?

...::ios::failbit); return is; } When implementing operator>>, manually setting the stream’s state is only necessary when the reading itself succeeded, but the result is not what would be expected. Function call operator The function call operator, used to create function objects, also k...
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How to properly seed random number generator

...se if you're setting the seed to the time in a fast loop, you'll probably call it with the same seed many times. In your case, as you're calling your randInt function until you have a different value, you're waiting for the time (as returned by Nano) to change. As for all pseudo-random libraries, ...
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Convert interface{} to int

...) } func addTwoNumbers(val1 interface{}, val2 interface{}) int { op1, _ := val1.(int) op2, _ := val2.(int) return op1 + op2 } share | improve this answer | fol...
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Uint8Array to string in Javascript

... For anyone lazy like me, npm install text-encoding, var textEncoding = require('text-encoding'); var TextDecoder = textEncoding.TextDecoder;. No thanks. – Evan Hu Nov 29 '16 at 6:11 ...
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How do I find a default constraint using INFORMATION_SCHEMA?

...efault value constraint SELECT default_constraints.name FROM sys.all_columns INNER JOIN sys.tables ON all_columns.object_id = tables.object_id INNER JOIN sys.schemas ON tables.schema_id = schemas.schema_id INNER JOIN sys.default_const...
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Spring get current ApplicationContext

...But I avoid creating new ApplicationContextProvider() everytime I need to call the getBean() from the context. What I did was to have static ApplicationContextProvider.getApplicationContext() method. Then, when it is time to need the current app context, I invoke: ApplicationContextProvider appConte...
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How do I update pip itself from inside my virtual environment?

...ate pip itself? According to pip --version , I currently have pip 1.1 installed in my virtualenv and I want to update to the latest version. ...
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Defining a variable with or without export

... Specifically export makes the variable available to child processes via the environment. – Beano Jul 21 '09 at 13:35 ...
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Maven error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher

I have installed a latest maven-3.0.4 on Windows 7 : The installation details are as follows: Installation Path : ...