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, …
Structs are a way to structure and use data. It allows us to group data. In this article, we will see how to declare and use it. Defining a Struct in Go To use a struct we declare the type of struct we are going to use. The code below shows how to define a …
Maps are one of the most useful data structures. It can store in key-value pairs and doesn’t allow for duplicate keys. Now, we will learn how the Go programming language implements maps. What is a map? A map is a key-value pair storage container. It offers fast and efficient lookups. And it doesn’t allow duplicate …
Constants are immutable values with a specific data type. What can be a constant Any literal is a constant in Go. Some of the constants in Go would be: Integer: 1234 Floating point: 23.56 Boolean: true, false Rune: 0x0048 Complex: 7+6i String: “Hello” Declaring a constant in Go – const keyword The const keyword is …
In this post, we will discuss boolean values and operators in GoLang. Boolean values in Go Boolean values are those which can be assigned true or false and has the type bool with it. In the code above “bVal” is not initialized and thus has a zero-value. The zero-value for a boolean is false. Boolean …
Strings are essential in every programming language. Go is no different here. We will see how to initialize and use those strings. Initializing Strings in GoLang We can initialize strings just like any other data-type. String concatenation can be done effortlessly. Accessing by index Strings in Go can be accessed just like an array or …
Arrays are consecutive storage of the same data-type. In this post, we will see how arrays work in GoLang. Declaration of an Array To declare an array in Go we first give its name, then size, then type as shown below. Initialization of an Array Let’s see how to initialize an array. If we don’t …
There are two complex types in Go. The complex64 and the complex128. Initializing Complex Numbers Initializing complex numbers is really easy. You can use the constructor or the initialization syntax as well. Parts of a Complex Number There are two parts of a complex number. The real and imaginary part. We use functions to get …
Go supports the IEEE-754 32-bit and 64-bit floating-point numbers extensively. Let’s see how to use it. Loss of Precision with Floating Point Numbers Loss of precision will occur when a 64-bit floating-point number is converted to 32-bit float. Complex numbers Floating-point numbers are used in complex numbers as well. The real and imaginary parts are …