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STL style iterators on Qt Container can have some negative side effect due to the implicit-sharing. It is advised to avoid copying a Qt container while you have iterators active on them. QVector<int> a,b; //2 vectors a.resize(1000); b = a; // b and a now point to the same memory internal...

CIM vs WMI As of PowerShell 3.0, there are two ways to work with management classes in PowerShell, WMI and CIM. PowerShell 1.0 and 2.0 only supported the WMI-module which is now superseeded by the new and improved CIM-module. In a later release of PowerShell, the WMI-cmdlets will be removed. C...

There are 2 spatial data types Geometry X/Y coordinate system for a flat surface Geography Latitude/Longitude coordinate system for a curved surface (the earth). There are multiple projections of curved surfaces so each geography spatial must let SQL Server know which projection to use. The usua...

AlchemyLanguage is a collection of text analysis methods that provide deeper insight into your text or HTML content. See the Getting Started topic to learn how to get started with AlchemyLanguage and other Watson services. For more AlchemyLanguage details and examples, see the API reference and do...

a2ensite - a script that enables the specified site (which contains a block) within the apache2 configuration by creating symlinks within /etc/apache2/sites-enabled apache2 - popular web server. Alternative web servers are tomcat, nginx, etc. openssl - SSL works by using a private key ...

String s = config.getString("path.to.string"); int i = config.getInt("path.to.int"); double d = config.getDouble("path.to.double"); List<String> sl = config.getStringList("path.to.stringlist"); List<Double> dl = config.getDoubleList("pat...

The Java Memory Model is the section of the JLS that specifies the conditions under which one thread is guaranteed to see the effects of memory writes made by another thread. The relevant section in recent editions is "JLS 17.4 Memory Model" (in Java 8, Java 7, Java 6) There was a majo...

The assertions will be optimized away in an release build.