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Removing all empty elements from a hash / YAML?
...e here for the benchmark.
In case you want to backport it to your Rails 3 app:
# config/initializers/rails4_backports.rb
class Hash
# as implemented in Rails 4
# File activesupport/lib/active_support/core_ext/hash/compact.rb, line 8
def compact
self.select { |_, value| !value.nil? }
e...
How to execute raw SQL in Flask-SQLAlchemy app
...te('SELECT * FROM my_table WHERE my_column = :val', {'val': 5})
All your application queries should be going through a session object, whether they're raw SQL or not. This ensures that the queries are properly managed by a transaction, which allows multiple queries in the same request to be commit...
Where to place the 'assets' folder in Android Studio?
..., src/main/assets/).
In a typical Android Studio project, you will have an app/ module, with a main/ sourceset (app/src/main/ off of the project root), and so your primary assets would go in app/src/main/assets/. However:
If you need assets specific to a build type, such as debug versus release, yo...
创建自定义 TinyWebDB 服务 · App Inventor 2 中文网
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“The file ”MyApp.app“ couldn't be opened because you don't have permission to view it” when running
Whenever I try to run my app in Xcode 6 Beta 4 I am getting the error:
57 Answers
57
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使用位置传感器 · App Inventor 2 中文网
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Difference in System. exit(0) , System.exit(-1), System.exit(1 ) in Java
... counts as true in the shell and any other code counts as false. So java MyApp && echo success will print "success" iff MyApp has an exit code of 0, i.e. if it calls exit(0) or simply reaches the end of the main method without an error.
– sepp2k
Mar 12 ...
How does TestFlight do it?
TestFlight offers over-the-air beta distribution of iOS apps (on non-jailbroken devices). How can this be done? Is this an iOS feature, or a vulnerability exploit?
...
How to change an Android app's name?
Is there a way to change the name (Launcher App Label) of an app without creating a new project?
17 Answers
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What is the difference between Google App Engine and Google Compute Engine?
I was wondering what the difference between App Engine & Compute Engine are. Can anyone explain the difference to me?
11 An...