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Get environment variable value in Dockerfile
I'm building a container for a ruby app. My app's configuration is contained within environment variables (loaded inside the app with dotenv ).
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Python logging not outputting anything
...This sets the root logger to write to stdout (your console).
# Your script/app needs to call this somewhere at least once.
logging.basicConfig()
# By default the root logger is set to WARNING and all loggers you define
# inherit that value. Here we set the root logger to NOTSET. This logging
# leve...
How to detect orientation change?
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Here's how I got it working:
In AppDelegate.swift inside the didFinishLaunchingWithOptions function I put:
NotificationCenter.default.addObserver(self, selector: #selector(AppDelegate.rotated), name: UIDevice.orientationDidChangeNotification, object: nil)...
Live character count for EditText
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You can do character counting from xml itself using TextInputLayout wrapper for EditText introduced in SupportLibrary v23.1
Just wrap your EditText with a TextInputLayout and set CounterEnabled to true and Set a counterMaxLength.
<android.support.design.widget.TextInputLayout
android:i...
Express command not found
...rator package. Originally generated by the project is running express node app.js, because httpserver relevant code in app.js, and now this part of the code to the project directory bin/www below, app.js retain only achieve app logic code, you need to run the bin/www. Just a very simple application ...
No secret option provided to Rack::Session::Cookie warning?
...e/session/abstract_store.rb
module Compatibility
def initialize(app, options = {})
options[:key] ||= '_session_id'
#fixed warning - SECURITY WARNING: No secret option provided to Rack::Session::Cookie.
options[:secret] ||= Rails.application.config.s...
How can I use NSError in my iPhone App?
I am working on catching errors in my app, and I am looking into using NSError . I am slightly confused about how to use it, and how to populate it.
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Why does Android use Java? [closed]
...va was known in the industry
the speed difference is not an issue for most applications; if it was you should code in low-level language
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Is there a good Valgrind substitute for Windows?
...d found it quiet useful and easy to setup. It works from Win2000 to Win7.
AppVerifier is a must have swissknife for windows native code developers, its "memory" checker does similar job
http://msdn.microsoft.com/en-us/library/dd371695%28v=vs.85%29.aspx
2. Callgrind:
My favorite is verysleepy ( h...
When is SQLiteOpenHelper onCreate() / onUpgrade() run?
... code (onCreate()), you should make sure the database is updated. Two main approaches:
Delete the old database file so that onCreate() is run again. This is often preferred at development time where you have control over the installed versions and data loss is not an issue. Some ways to delete the...