Learn free golang tutorials

Golang File and Directory IO operations with examples

October 4, 2021 ·  13 min read

In this tutorial, you will learn file and directory operations with examples. Contents Golang File IO package Golang File Examples How to create an Empty File in Golang How to Copy a files in Go Language? How to print Name,size,permissions, information of a File and Directory? How to Rename or move a file name to new name How to Delete a file in Golang? How to truncate or Reduce file size in Golang?...

Learn how to create Set data structure with examples

July 17, 2021 ·  3 min read

This post covers Implementation of Set Data structure in go language with examples How to create a Set in Golang? Set is a general data structure contains collection of elements, does not allow duplicate elements. some programming languages like java has inbuilt Set support In Programming language, Set is a computer data structure implementation of mathematical finest concepts.Generally Set is a Unordered list and no duplicates. In Golang, We can use Map type to implement Set type....

Learn Golang Tutorials - if else statement examples

July 17, 2021 ·  4 min read

In this blog post, we are going to learn control flow structures - if-else statements in Go Language with examples. golang if statements Like many programming languages, Go Language provides control structures for decision making. if and else statements are one of type. if statements are used to execute a piece of code based on the conditional expressions, if the condition is satisfied, code block will be executed. if and el`se in golang are reserved words....

Learn Golang Tutorials - Operators Guide with examples

July 13, 2021 ·  11 min read

Go Language Operators Like many programming languages, Golang has a support for various inbuilt operators. Important keynotes of operators in the Go language Operators are character sequence used to execute some operations on a given operand(s) Each operator in Go language is of types Unary Operator or Binary Operator. Binary operators accept two operands, Unary Operator accepts one operand Operators operate on one or two operands with expressions These are used to form expressions The following are different types covered as part of this blog post...

Learn Golang tutorials - Map Guide with examples

July 12, 2021 ·  12 min read

In this tutorial, We are going to learn map built-in type with examples in the Go Language. Contents Go Language Map tutorials Map Syntax in Golang How to declare a Map Variable and initialize with values zero value map with nil type Create Map using inbuilt make function  Create and initializing using map literals  Adding elements (key-value pair) to a Map  How to Check if the map contains a key  How to fin Size of a map - BuiltIn len() function  How to remove items from a map - built-in delete function Iterate over all items of the map - range form of for loops map copy is reference types  values of a map copy Check Compare equivalence of map  How to Convert map key/values into slice example ?...

Golang Array tutorials with examples

July 11, 2021 ·  11 min read

This blog covers Beginner guide to Arrays in Golangauage with examples. Contents Golang Arrays Introduction Array Syntax in Golang How to declare and create an array in Golang? How to Declare array and initialization with array Literal ? How to Declare an array with ellipse symbol? Assign elements and access elements using the index? How to find a length of an array - Number of elements? How to Iterate an element of an array using for loop  How to Iterate an element of an array using a range in Golang An array of arrays - Multidimensional Arrays in Golang How to create Array Objects in Golang - Struct example How to Check Array Variable data type in Golang?...

Learn Golang Tutorials - Rune Types Explained with examples

June 30, 2021 ·  5 min read

Rune is a data type in the Go programming language. Rune is character literal which represents int32 value and each int value is mapped to Unicode code point https://en.wikipedia.org/wiki/Code_point It represents any characters of any alphabet from any language in the world. Each Character in language has a different meaning. For the English language, the character is from alphabets has ‘B’,‘b’,'&', for Chinese, it is ‘我’ Like other programming languages, Go don’t have a character data type....

Golang Tutorials - Beginner guide Slice Examples

June 25, 2021 ·  13 min read

This blog post covers Golang Slice Complete tutorials with example Contents Golang Slice Introduction Slice Variable Create and Initialize Slice Empty Values Nil Slice non zero values Create and initialize Slice using literal Slice creation using other Slice Create a slice using make() function  Length and capacity slice - len() capacity() function  Iteration of elements in slice  Iterate elements in a slice - for loop  Iteration of the element in slice using for loop with range keyword  Copy function - Copy elements in a slice  Copy slice to another slice  Copy string bytes to byte slice example  Append function - add an element to end element of Slice  Append slice to another slice  Append string bytes to Slice bytes  Modify a slice elements  multidimensional slice - slice of slices Golang Slice Introduction Arrays are static fixed size....

Golang Tutorials - Complex Types Numbers Guide With Examples

June 24, 2021 ·  3 min read

In this blog post, You will learn about Complex Numbers types in Go language with examples. Golang Complex Type Numbers Golang provides Inbuilt datatypes for numerics, strings, and other types. Numeric are int, uint, float, and complex numbers. Complex Numbers contains two parts - real numbers and imaginary numbers, for example, a complex number is 12.8i. In Golang, Complex numbers are represented in two types . complex64 type- this type is used to represent float32 real and imaginary data....

Golang Examples Convert string to/from boolean

June 19, 2021 ·  3 min read

In this blog post, You will learn how String conversion from Boolean type in go language with examples. Golang String bool conversion string and bool are predefined data types available in Golang. String accepts a group of characters, bool accepts true or false values. for example, string type contains value - “true”|“false”, bool type contains values - true|false. In Go language, String conversion will not happen automatically. We have to write a custom manual lcode or use standard packages - fmt or strconv to do that....

Golang Tutorials - Beginner guide to Functions with examples

June 14, 2021 ·  10 min read

Contents Golang Functions why Function is required? Golang Function Example using Empty Function declaration Return Multiple values from a functions  Blank Identifier - subset return values Named return values from a Function  Variadic functions - variable arguments  closure or anonymous functions  defer statement  arrays as slice of arguments  Golang Functions This article covers the following things related to functions in Go language...

Golang tutorials-Switch case statement with examples

June 14, 2021 ·  10 min read

This article covers the Switch case statements with expressions and types with various syntax examples. Contents Golang Switch case statements Expression Switch  Example The duplicate case with same values are not allowed  Default case when the matched case is not declared Switch with No expression or Condition  Switch case contains multiple expressions or conditions  fallthrough keyword in the case body  switch case floating values switch case String literals  Break statement to exit from the loop Functions can be used as Expression in switch and case  Type Switch switch type assertion interface example a type switch struct example  Golang Switch case statements Switch case is used to execute a particular code block when we have multiple code blocks based on condition....

GoLang Examples - Convert String to Int types with examples

June 14, 2021 ·  5 min read

This article talks about three ways to Convert String to Integer in Go Language. Golang String int datatypes String and Int are different data types and holds different values. When we want to perform mathematical calculations on strings that contain numbers, we must convert string to int. if a user enter numeric value in the text box of a web application form, this will be received as input as a string....

Golang Tutorials - foreach loop with range keyword examples

June 13, 2021 ·  3 min read

In this blog post, We are going to learn for each loop with range in go language with example Golang for each loop  the foreach loop is a for loop with range keyword. It is used iterate each element from Array, Slice, Map, and Strings. This is always useful to iterate the elements of a data structure without getting the length of data structure Syntax of the for with range loop is as follows...

Golang tutorials - For Loop beginner guide with examples

June 12, 2021 ·  4 min read

This blog post covers the For Loop with a break, continue, goto keywords with examples in Go Language. Golang For loop For loop is used to execute the code block at a specific number of times. it is one more control structure type in go language. Following is a syntax of for loop for initialization; conditional Boolean expression; increment|decrement { // Code block } following are notes of for loop syntax...

Learn Golang tutorials - While loop beginner examples

June 12, 2021 ·  2 min read

This blog post covers learn while and do while loop guide with examples in Golang. Golang while loop  Like other programming languages, There is no while loop or do while loop in go language. Instead, it provides for loop with a boolean expression. This will executes code of block multiple times until conditional expression is true. if conditional expressions result false, It exits the control from the loop block. Each iteration is executed once the condition is true....

Golang Tutorials - Data types Basic Guide with examples

June 12, 2021 ·  4 min read

In this blog post series, We are going to learn basic inbuilt predefined data types in golang tutorials with examples. Go language data types Go is a modern opensource programming language from Google. It is a static type language which means type checking will be done at compile time. Variable can be declared a type or inferred from type inference. datatypes in golang define the same type of data that can be used to allocates memory size for storing the particular value....

Golang tutorials - Variables starter guide with examples

June 12, 2021 ·  4 min read

In this blog post, It covers the Golang Tutorials variables guide with examples Golang variables Variables usage in go language is the same as another programming language like java. Variables are the name assigned for a space in memory that saves the values. Variables of different types. Based on each type, memory size will be accommodated Variables name can be named using letters, digits and underscore characters. Go lang is case sensitive so that upper and lower names are different....

Learn Golang tutorials-Install and setup Windows

June 12, 2021 ·  2 min read

In this blog post, We are going to learn an easy way to install go language on windows. ##Go Language installation Go is a modern popular opensource programming language. Go language is developed by Google. It provides binary versions for Windows, MacOS, and Linux officially. If you want to install a different environment, You can get the source code and built it to your platform. Go language provides the following binaries for installation on different environments...

Golang Example - strconv ParseInt Function explained

June 12, 2021 ·  3 min read

In this blog post, We are going to learn strconv ParseInt Function with examples in the Go Language. strconv ParseInt Function strconv package provides functions for converting String to or from different data types. PaseInt() is one of the functions used to convert String to Integer types and used for Number conversions. You can get official documentation from here Syntax Here is a signature of ParseInt example func ParseInt(s string, radix/base int, bitSize int) (i int64, err error) Arguments List -...

Golang Recursion - Recursive function with examples

June 11, 2021 ·  4 min read

In this blog post, we are going to learn Recursive functions in golang with examples. Contents what is golang recursive function Recursion Syntax in Golang Golang Recursion function Example: Infinite times  Golang Recursion function Example: finite times How to generate Factorial Number using Recursion function Example ? Recursion example for calculating Fibonacci series  Recursive anonymous function  Conclusion what is golang recursive function Recursion is general programming code process in which method or function calls itself continuously....

Golang Example - strconv ParseFloat function guide

June 10, 2021 ·  3 min read

This blog post covers package strconv ParseFloat Function with examples in the Go Language. golang strconv ParseFloat function strconv is a standard inbuilt package in go language that provides various function implementations for converting a string to types into an int, float, boolean etc.. String to float is a common task of a programmer during development ParseFloat is an inbuilt function, converts a String value to a floating number You can check official documentation is here...

Go Language with fundamental tutorials with examples

June 1, 2021 ·  1 min read

This is the main page for all Go Language Tutorials with examples Go Language Tutorials Go is a popular programming language from Google company. It has the following features The syntax is similar to C language Concurrency Support Opensource Static typed Supports all platforms in Windows, Linux, Unix  Opensource Garbage collection Following are different posts on Golang  Install and Setup Golang Hello World Application Explained Variable Declaration Beginner Guide Datatype tutorials Basics if else statement with examples While Loop With examples For Loop Tutorials with examples Foreach tutorials with examples Switch Case Tutorials with examples Beginner Guide to Functions with examples Rune Type with tutorials examples Operator Guide with examples File Or Directory IO Operations with examples Golang Conversions Convert String to Boolean and back to String Convert String to Int with an example Convert Int to String with examples Convert Binary to Decimal vice versa Convert Octal to Decimal vice-versa Golang Data structures Set version of MAP with Example Map Types Guides With examples Map Advanced Programs with examples Slices Examples with tutorials Guide to Arrays with examples hostname and IP Address Related examples Golang Complete Examples Example programs ...

Golang Example programs with code

April 11, 2021 ·  2 min read

Go is a Static typed popular programming language. To learn a new programming language, We must write a practical example by making use of features. This is an index page for all golang features like control statements -loops, if else, datatypes, data structures, classes, Conversions of one datatype to others,and objects. All the programs and examples are compiled and tested and given output. if you are new to go language, want to learn golang before working on this program, then have a look Golang Tutorials....

Golang Tutorials-Hello World First Program example

April 5, 2021 ·  4 min read

In this blog post, we’ll go through the essentials of the Hello World example in Go programming language. Go Language First Program code Google released Go, a popular Opensource programming language. You will write a sample Hello world program example while learning any language. To write and run the Golang program, you’ll need the following things. Go Compiler installation Use any code editor, such as Sublime Text or Atom, or Visual Studio Code, to manually write the code shown below....

Golang Tutorials - Comments in Go Language

November 20, 2020 ·  4 min read

When you are learning new language, The basic thing to learn is about data types ,Control flow statements and Comments, In this blog post, You will learn about Different types of comments and how to write comments in Go Language?. In a programming language, Comments are useful statements to describe about line of code statements. These are part of the program that contains statements used to place human-readable information. This will be helpful for developers to maintain the code, improves code quality and Easy to find bug an d fixes for it....