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Design Patterns – Abstract Factory
Intent
- Provide an interface for creating families of related or dependent objects without specifying their concrete classes.
- A hierarchy that encapsulates: many possible “platforms”, and the construction of a suite of “products”.
- The
new
operator considered harmful. Continue reading
Design Patterns – Factory
Intent
- Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subclasses.
- Defining a “virtual” constructor.
- The
new
operator considered harmful. Continue reading
Design Patterns – Singleton
Intent
- Ensure a class has only one instance, and provide a global point of access to it.
- Encapsulated “just-in-time initialization” or “initialization on first use”. Continue reading
Integration WinMerge in Total Commander
Do you use Total Commander and you need to compare documents more than once a month ? If so, you might find this article interesting and helpful Continue reading
Design patterns – overview
In software engineering, a design pattern is a general repeatable solution to a commonly occurring problem in software design. A design pattern isn’t a finished design that can be transformed directly into code. It is a description or template for how to solve a problem that can be used in many different situations. Continue reading
Converting material quantities to different unit of measure in ABAP
Each material in SAP has its standard, base unit of measure (stored in MARA-MEINS). To allow using alternative units, those can be maintained per material in table MARM. A common requirement for ABAPer is to convert material quantity from one unit to another, most likely from an alternative unit to the base one, to be able to summarize the report results. Continue reading