What is a partial class?

Partial class is a function in some object -oriented programming languages ​​that allow the classification of class implementation to multiple source code files. Partial classes that are also called partial types do not exist in many programming languages, especially older ones such as C ++ and Java. Every language that implements partial classes, such as C# and Ruby, processes the implementation a little differently. Each piece of class is initialized in the same way with the same class statements and without these "partial" keywords, it would be unlawful to create multiple classes in multiple files with the same name. The keyword "partial" tells the compiler or interpreter depending on the language to merge all classes into one large unit. All different parts of the class must have savageability, whether it is public, private or protected. If one part of the class is marked as abstract, the merged class is also determined as abstract, although none of the other parts has been marked asSuch.

Partial class implementation across multiple files has some significant advantages in both programming and organization. Partial classes allow explicit ward of related code to more specialized groups. In addition, a partial class allows multiple programmers to work on specific parts of the code without potentially disrupting others and accidentally overwritten revisions. Even for individual programmers, partial classes can be useful in that they can be used to create very large classes without creating a single cumbersome set that is difficult to organize and read.

Partial class implementation patterns also have some characters disadvantages. Although there are object -oriented programming under the umbrella, partial classes actually violate the principles of encapsulation that are central to object -oriented programming. In an object -oriented programoThe class should be the only unified entity that has its own unique states and behavior is separate and is able to be used as a cohesive unit. Partial classes violate this idea because each partial class acts as one separate class. Although pieces that make up a partial class are merged into one large class at the run, pieces of partial class are often independent entities that could be used in themselves without any form of merger.