All About GoLang.

Type assertions in Go help access the underlying type of an interface and remove ambiguity from an interface variable. In this post, we will get a closer look at type assertions. What are type-assertions in Golang? Type assertions reveal the concrete value inside the interface variable. Below is an example showing the assertion. Type assertion […]

In general programming interfaces are contracts that have a set of functions to be implemented to fulfill that contract. Go is no different. Go has great support for interfaces and they are implemented in an implicit way. They allow polymorphism in Go. In this post, we will talk about interfaces, what they are, and how

Errors are a language-agnostic part that helps to write code in such a way that no unexpected thing happens. When something occurs which is not supported by any means then an error occurs. Errors help to write clean code that increases the maintainability of the program. What is an error? An error is a well

A function in Go can return multiple values. In many cases, it is very useful. Multiple return values help to check errors in a concise way as we will see in this post. Golang Function return values A function can have any number of return values. Go supports this feature internally. Let’s see how a

In many cases, multiple parameters are needed to be passed in a function. Sometimes we know how many and other times we don’t. Golang variadic function applies to the second case where we don’t know how many arguments could be passed when calling that function. What are variadic functions in Golang? Variadic functions are just

There can be functions that don’t need a name in order to be defined. These are anonymous functions. Go has support for first-class functions. In this post, we will see how to use anonymous functions in the Go programming language. What are Anonymous Functions? Anonymous functions are those which don’t need a name to be

Recursion is one of the important concepts in programming languages. In this post, we will learn how to use recursion in Go. What is Recursion? Recursion happens when a function calls itself, i.e it recurs. When a function inside a program calls itself recursion occurs. Criteria for Recursion To be a recursive function it has

In this post, we will see templates and their usages in the Go programming language. What are templates? Templates are a common view through which we can pass data to make that view meaningful. It can be customized in any way to get any output possible. Template packages Templating in Go comes with two packages

In this post, we are going to see how to use JSON in the Go programming language. What is JSON? JSON is short for JavaScript Object Notation, a widely-used data interchange format. JSON is an extremely useful data format and is used almost everywhere today. Data-types supported in JSON and Go Below are some data-types

Slices are resizable arrays that provide huge flexibility when working with it. In this post, we will see how to use slices in Golang. Declaration of a slice A slice is declared just like an array but without mentioning its size. Difference between slices and arrays Arrays, after declared of some size, cannot be resized,