The Go programming language, also known as Golang, offers various features that make it a compelling choice for many developers. One such feature is the defer keyword, which provides a mechanism to ensure that certain statements are executed at the end of the function, regardless of how the function exits. In this article, we’ll explore how defer works, its use cases, and provide examples to illustrate its functionality.
The phenomenon of Hello World as the first program in many programming books and tutorials has a deep-rooted meaning. It is the traditional way to introduce beginners to the syntax and structure of a new programming language. Writing out Hello World is usually the simplest program that can be written in a language, so it serves as a gentle introduction.
The history of Hello World dates back to the 1970s, when Brian Kernighan used this example in a guide to the B language. Later, it was also included in the book Programming in C which he co-authored. This simple program has grown in popularity and has become a standard for teaching programming. It allows new programmers to quickly see how a computer performs an action on their command, which is very motivating at the beginning of learning programming.