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How to install packages offline?

... download a python package and it's dependencies from pypi for offline installation on another machine? Is there any easy way to do this with pip or easy_install? I'm trying to install the requests library on a FreeBSD box that is not connected to the internet. ...
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How to reverse a 'rails generate'

I want to delete all the files it created and roll back any changes made, but not necessarily to the database, but more to the config files. ...
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OS X Framework Library not loaded: 'Image not found'

... a Cocoa Framework Within that targets 'Build Settings' configure the 'Installation Directory' to '@executable_path/../Frameworks' Build library, and access the .framework from the archive or products directory Including The Framework Drag the created .framework file into the Xcode Project, be s...
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Difference in System. exit(0) , System.exit(-1), System.exit(1 ) in Java

...) and according to range: 1-127 are user defined codes (so generated by calling exit(n)) 128-255 are codes generated by termination due to different unix signals like SIGSEGV or SIGTERM But I don't think you should care while coding on Java, it's just a bit of information. It's useful if you pla...
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Installing Ruby Gem in Windows

I'm new to ruby. I tried to install GEM on my PC by following the steps given in the site http://rubygems.org/pages/download . ...
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How can I use getSystemService in a non-activity class (LocationManager)?

...l in onCreate function like this: package com.atClass.lmt; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; import android.location.Location; public class lmt extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super....
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java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist

... I tried all possible options but result is zero. Finally i found correct solution which is helpful for me. Just go to disable Instant Run Go to File -> Settings -> Build,Execution, Deployment -> Instant Run -> Uncheck the...
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What's the right way to pass form element state to sibling/parent elements?

... in your root component? I can't speak for the creators of React, but generally, I find this to be a proper solution. Maintaining state is one of the reasons (at least I think) that React was created. If you've ever implemented your own state pattern client side for dealing with a dynamic UI that ...
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When is SQLiteOpenHelper onCreate() / onUpgrade() run?

... SQLiteOpenHelper onCreate() and onUpgrade() callbacks are invoked when the database is actually opened, for example by a call to getWritableDatabase(). The database is not opened when the database helper object itself is created. SQLiteOpenHelper versions the database ...
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What are the aspect ratios for all Android phone and tablet devices?

I'm looking for a list of all screen aspect ratios for popular Android based Phones and Tablets. 5 Answers ...