What is a “static” function in C?

static functions are functions that are only visible to other functions in the same file (more precisely the same translation unit). EDIT: For those who thought, that the author of the questions meant a ‘class method’: As the question is tagged C he means a plain old C function. For (C++/Java/…) class methods, static means … Read more

What is the difference between Serialization and Marshaling?

Marshaling and serialization are loosely synonymous in the context of remote procedure call, but semantically different as a matter of intent. In particular, marshaling is about getting parameters from here to there, while serialization is about copying structured data to or from a primitive form such as a byte stream. In this sense, serialization is … Read more

What is the difference between UTF-8 and Unicode?

To expand on the answers others have given: We’ve got lots of languages with lots of characters that computers should ideally display. Unicode assigns each character a unique number, or code point. Computers deal with such numbers as bytes… skipping a bit of history here and ignoring memory addressing issues, 8-bit computers would treat an … Read more

Difference between DTO, VO, POJO, JavaBeans?

JavaBeans A JavaBean is a class that follows the JavaBeans conventions as defined by Sun. Wikipedia has a pretty good summary of what JavaBeans are: JavaBeans are reusable software components for Java that can be manipulated visually in a builder tool. Practically, they are classes written in the Java programming language conforming to a particular … Read more

What is monkey patching?

No, it’s not like any of those things. It’s simply the dynamic replacement of attributes at runtime. For instance, consider a class that has a method get_data. This method does an external lookup (on a database or web API, for example), and various other methods in the class call it. However, in a unit test, … Read more

What’s the difference between unit, functional, acceptance, and integration tests? [closed]

Depending on where you look, you’ll get slightly different answers. I’ve read about the subject a lot, and here’s my distillation; again, these are slightly wooly and others may disagree. Unit Tests Tests the smallest unit of functionality, typically a method/function (e.g. given a class with a particular state, calling x method on the class … Read more

What is the difference between application server and web server?

Most of the times these terms Web Server and Application server are used interchangeably. Following are some of the key differences in features of Web Server and Application Server: Web Server is designed to serve HTTP Content. App Server can also serve HTTP Content but is not limited to just HTTP. It can be provided … Read more

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