Tutorial by Topics: m

Primary keys are used to uniquely identify a record in a table. A table may only have a single primary key (though the primary key can consist of multiple columns), and a primary key is required for certain types of replication. Primary keys are often used as (but don't have to be) the clustered ...

Starting with SQL Server 2008, it is possible to perform insert, update, or delete operations in a single statement using the MERGE statement. The MERGE statement allows you to join a data source with a target table or view, and then perform multiple actions against the target based on the results ...

An example of how to use dependency injection in .net without using a container. Based on examples by Mark Seemann http://blog.ploeh.dk/

Matplotlib has four distinct coordinate systems which can be leveraged to ease the positioning of different object, e.g., text. Each system has a corresponding transformation object which transform coordinates from that system to the so called display coordinate system. Data coordinate system is ...

Java driver.switchTo().frame(String name); driver.switchTo().frame(String id); driver.switchTo().frame(int index); driver.switchTo().frame(WebElement frameElement); driver.switchTo().defaultContent(); C# driver.SwitchTo().Frame(int frameIndex); driver.SwitchTo().Frame(IWebElement frameEle...

webpack-hot-middleware Use with webpack-dev-middleware, by adding webpack-hot-middleware/client to entry. Config Add configs as query string to the path. Example: webpack-hot-middleware/client?path=/__what&timeout=2000&overlay=false OptionDescriptionpathThe path which the middle...

Flask-SQLAlchemy adds some additional functionality such as automatic destruction of the session assuming some things for you which are very often not what you need.

Angular 2 allow to access the ngForm instance by creating a local template variable. Angular 2 exposes directive instances like ngForm by specifying exportAs property of the directive metadata. Now, the advantage here is without much coding you can access the ngForm instance and use it to access s...

This topic will provide Model‑View‑Presenter (MVP) architecture of Android with various examples. There are many ways to architect an Android app. But not all of them are testable and allows us to structure our code so that the app is easy to test. The key idea of a testable architecture is se...