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Go Programming Articles
Page 49 of 86
Golang Program to Check Whether an Alphabet is Vowel or Consonant
In this tutorial we will write a go language code to check whether an alphabet is vowel or consonant. Difference between Vowel and Consonant A character is called vowel if it is in any one of the following list of characters {a, e, I, o, u}. All the remaining characters are called consonants. In English language there are 5 vowels and 21 consonants. Here we are going to use following 2 methods − Method 1: Using if/else statement In this method we will use the conditional statements to check if a character is a vowel or consonant. Method 2: Using ...
Read MoreGolang program to implement returning pointer from a function
In this article, we will write Golang programs to implement returning pointer from a function. A pointer stores the address of another variable and the address is depicted using & operator. Algorithm Step 1 − Create a package main and declare fmt(format package) package in the program where main produces executable codes and fmt helps in formatting input and Output. Step 2 − Create a function create_pointer that returns a pointer to the int Step 3 − Set the value of x in the function and return the variable back to the function Step 4 − Create a main ...
Read MoreGolang program to parse time
In golang we can use various internal time function to parse time. Time is parsed using parse and ParseInLocation method. Syntax time.Parse() This function belongs to time package. It is used to parse the string into time.Time value and it takes two inputs: the layout and the time string which is to be parsed. time.ParselnLocation() This function is a part of the time package. It is used to parse the string into time.Time value along with a specified location. It takes 3 arguments: the location, layout string and the time string. time.Format() This function is present in ...
Read MoreGolang program to implement select statement
The Golang Select statement is similar to the switch statement, the switch statement selects the Output based on the cases but here the Output is selected based on which communication occurs fast in the channels. Syntax func make ([] type, size, capacity) The make function in go language is used to create an array/map it accepts the type of variable to be created, its size and capacity as arguments. time.Sleep() This function belongs to the time package. Here, the word sleep depicts the meaning of the function which says that it will block the execution of goroutine for ...
Read MoreGolang program to show promoted methods
In golang, Promoted methods are the methods created under those structs which are embedded inside another struct, now the struct in which it is embedded can access its methods and fields. In this article we are going to explain how to show promoted methods using various structs like Rectangle and Square, Vehicle and car. Algorithm Step 1 − Create a package main and declare fmt(format package) package in the program where main produces executable codes and fmt helps in formatting input and Output. Step 2 − Create a Rectangle struct with two fields width and height of type float ...
Read MoreGolang program to depict use of promoted fields
In golang, promoted fields are the structs that are embedded inside another structs and their fields can also be accessed the structs in which they are embedded. In this article we are going to understand three different approaches to depict use of promoted filed with and without the help of pointers. Using Pointers In this illustration, we will make use of pointers to show the promoted fields. The field names will be set with the help of pointers and information will be printed using dot notation. Algorithm Step 1 − Create a package main and declare fmt(format package) package ...
Read MoreGolang program to show use of rand package
In golang, a rand package is used to generate random numbers/characters. Firstly, it seeds with the current time to get the different random Output each time then perform any operation. Syntax rand.Seed(value) Rand.Seed() function is used to generate random numbers. It takes a user input as argument which is the upper limit for generating random numbers. func Now() Time The Now() function is defined in time package. This function generates the current local time. To use this function, we have to first impot the time package in our program. func (t Time) UnixNano() int64 The UnixNano() function ...
Read MoreGolang program to print struct variables
In this Golang article, we will write programs to print struct variables. Here, there is no concept of classes, instead of that structs are used to represent a collection of related fields or properties. Using Name of the Field and Shorthand Declaration in the Main Function In this method, we will create a child struct and further create two fields name and age in it. The field values are set by creating the instance of the struct. In the second example, the field values of the Child struct are set in the instance using shorthand declaration and the field ...
Read MoreGolang program to create a module with variables
In golang we can create a module with variable using const or var keywords, orelse we can even import the module . A module in Go is a group of packages. It helps in managing the distribution of the package. Algorithm Step 1 − Create a package main and declare fmt(format package) package in the program where main produces executable codes and fmt helps in formatting input and Output. Step 2 − In the first step, create three variables name, age and address using var keyword and assign these variables the desired values. Step 3 − Then, create a ...
Read MoreGolang program to create a class inside the module
In this article we will write a Golang program to create a class inside the module. There are no classes only structs are used in this program which will contain the data fields. A module is a collection of the packages having go.mod file at its root. This file determines the module’s directory. Using Child Struct In this Method, we will write a Golang program to create a class inside the module using child struct, a function createstruct will be created which will be called from another module to print child info. Algorithm Step 1 − Import the package ...
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