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Qt events and signal/slots
...rived
from the abstract QEvent class, that
represent things that have happened
either within an application or as a
result of outside activity that the
application needs to know about.
Events can be received and handled by
any instance of a QObject subclass,
but they are especially r...
Do fragments really need an empty constructor?
I have a Fragment with a constructor that takes multiple arguments. My app worked fine during development, but in production my users sometimes see this crash:
...
What is WEB-INF used for in a Java EE web application?
I'm working on a Java EE web application with the following source code structure:
5 Answers
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How to design a database for User Defined Fields?
...
referential
integrity is rarely out-performed by
trigger-based or application level
constraint enforcement.
Cons:
This could create a lot of tables.
Enforcing schema separation and/or a
naming convention would alleviate
this.
There is more application code
needed to operate the UDF ...
Disable JavaScript error in WebBrowser control
I am developing a windows application with a WebBrowser control that navigates to a sharepoint site.
My problem is that i am getting JavaScript error.
...
What does Docker add to lxc-tools (the userspace LXC tools)?
...rtable deployment across machines. Docker defines a format for bundling an application and all its dependencies into a single object which can be transferred to any docker-enabled machine, and executed there with the guarantee that the execution environment exposed to the application will be the sam...
Why use JUnit for testing?
...put" (LMFAO). (See note below)
Any time you change code, you must run the app and LMFAO for all code affected by those changes. Even in small projects, this is problematic and error-prone.
Now scale up to 50k, 250k, 1m LOC or more, and LMFAO any time you make a code change. Not only is it unpleasa...
How to use Elasticsearch with MongoDB?
...node Elasticsearch "cluster" to index MongoDB for use in a NodeJS, Express app on a fresh EC2 Ubuntu 14.04 instance.
Make sure everything is up to date.
sudo apt-get update
Install NodeJS.
sudo apt-get install nodejs
sudo apt-get install npm
Install MongoDB - These steps are straight from Mon...
Setting environment variables via launchd.conf no longer works in OS X Yosemite/El Capitan/macOS Sie
...<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>my.startup</string>
<key>ProgramArguments<...
In Windows Azure: What are web role, worker role and VM role?
The application I work on contains a web role: it's a simple web application. I needed to host the application in Windows Azure, so I created a web role. I actually want to know what these roles are for. What is their significance coding wise or storage wise?
...