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Django 1.7 - makemigrations not detecting changes

... If you're changing over from an existing app you made in django 1.6, then you need to do one pre-step (as I found out) listed in the documentation: python manage.py makemigrations your_app_label The documentation does not make it obvious that you need to add t...
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An App ID with Identifier '' is not available. Please enter a different string

I am trying to add a new APP ID to prepare for App Store submission and got the following error under the bundle ID I provided. ...
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How to get current memory usage in android?

...emory usage/available of the DEVICE. This is NOT what is available to your app. To measure what your APP is doing, and is PERMITTED to do, Use android developer's answer. Android docs - ActivityManager.MemoryInfo parse /proc/meminfo command. You can find reference code here: Get Memory Usage in...
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ImageView - have height match width?

...id:layout_width="wrap_content" android:layout_height="0dp" app:layout_constraintDimensionRatio="1:1" /> </android.support.constraint.ConstraintLayout> See here Deprecated: According to this post by Android Developers, all you need to do now is to wrap whatever you want ...
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Comparison between Corona, Phonegap, Titanium

...th expose mobile phone functions through a set of javascript APIs, and the application's logic (html, css, javascript) runs inside a native WebView control. PhoneGap is not just a native wrapper of a web app. Through the PhoneGap javascript APIs, the "web app" has access to the mobile phone functi...
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How can I call controller/view helper methods from the console in Ruby on Rails?

... that's not included by default (say, because you removed helper :all from ApplicationController), just include the helper. >> include BogusHelper >> helper.bogus => "bogus output" As for dealing with controllers, I quote Nick's answer: > app.get '/posts/1' > response = app...
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Can't get rid of header X-Powered-By:Express

... In Express >= 3.0.0rc5: app.disable('x-powered-by'); Here is a simple middleware that removes the header in earlier versions of Express: app.use(function (req, res, next) { res.removeHeader("x-powered-by"); next(); }); ...
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How do I discover memory usage of my application in Android?

How can I find the memory used on my Android application, programmatically? 9 Answers ...
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Make a link in the Android browser start up my app?

...ed ... </intent-filter> Then you should be able to launch your app with links that begin with the anton: URI scheme. share | improve this answer | follow ...
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What is a fat JAR? [duplicate]

... The different names are just ways of packaging java apps. Skinny – Contains ONLY the bits you literally type into your code editor, and NOTHING else. Thin – Contains all of the above PLUS the app’s direct dependencies of your app (db drivers, utility libraries, etc). ...