Go Programming Articles

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Golang program to get the individual components of the current date-time

Akhil Sharma
Akhil Sharma
Updated on 03-Apr-2023 335 Views

In this article, we are going to learn how to use various internal time function in Golang that will get the individual components of the current date-time. Now function from the time package will be used to get the current date-time and the individual components of date-time are calculated using the individual components as methods. Syntax 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 import the time package in our program. time.Month() This method belongs to the time package. It ...

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Golang program to display time in different country’s format

Akhil Sharma
Akhil Sharma
Updated on 03-Apr-2023 508 Views

In Golang we can use the functions like time.Format() and Now() Time to display the time in different country’s format. Now function from the time package is used to get the current local time and the format function is used to format the time string using different format strings. Syntax time.Format() This function is present in the time package. It takes a layout input string that depicts how the Output string will be formatted. func Now() Time The Now() function is defined in time package. This function generates the current local time. To use this function, we have ...

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Golang program to demonstrate the argument passing to block

Akhil Sharma
Akhil Sharma
Updated on 03-Apr-2023 243 Views

In this article, we are going to learn how to demonstrate the argument to block using the user-defined function, iterations, and square of numbers . A block is created using curly braces with a definite begin and end braces. The different operations are performed inside the braces. Algorithm Step 1 − Import the required packages in the program Step 2 − Create a main function and in there create a slice Step 3 − Use a function to pass the argument and print the values with the help of iteration Step 4 − Print statement is executed ...

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Golang program to get the current day of the year out of 365

Akhil Sharma
Akhil Sharma
Updated on 03-Apr-2023 972 Views

In Golang we can use functions like YearDay and Sub as well as arithmetic operation method to get the current day of the year out of 365. The current time is obtained using the Now function from the time package and YearDay() function is used to obtain the current day of the year out of 365. Method 1: Using YearDay and Sub Functions In this method, the number of days between the current date and start of the year are calculated using currentTime.Sub(start_of_year).Hours() / 24 as well as simple YearDay method. Syntax func Now() Time The Now() function ...

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Golang program to add two dates

Akhil Sharma
Akhil Sharma
Updated on 03-Apr-2023 487 Views

In this Golang article, we will write programs to add two dates. The dates are added using methods like Add(), AddDate(). There are different formats to represent a date. Here, the dates after addition will be represented using YY/MM/DD format. Syntax func (t Time) Sub(u Time) Duration The sub() function in Go is used to get the difference between two dates. In this function the first two parameters i.e., t and u are date values and this function returns the difference between two values in hours, minutes and seconds. time.Parse() This function belongs to the time package. It ...

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Golang program to get key based on value from the hash collection

Akhil Sharma
Akhil Sharma
Updated on 27-Mar-2023 674 Views

In golang, we can use hashmap to perform various operations like deleting, updating, and storing the values in the hash collection. In this article, we are going to understand get key based on a value from the hash collection using two different examples. In the first example, we will use an external function and iterate the map to get the key from the value, in the second example we will use a reverse map to get the key from the desired value. Algorithm Create a package main and declare fmt(format package) in the program where main produces executable codes ...

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Golang program to get the hash collection values as an array

Akhil Sharma
Akhil Sharma
Updated on 27-Mar-2023 980 Views

In Go programming language, a hash collection contains a hashmap which stores the values as key:value pairs for the efficient execution of the programs. In this article we will use two examples to get the hash collection values as an array. In the first example, we will create a slice and append the strings of map in that slice, in the second example we will hash the string and store it inside the map. In this way we will print the array. Syntax func make ([] type, size, capacity) The make function in go language is used to create ...

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Golang program to check a given key exists in the hash collection or not

Akhil Sharma
Akhil Sharma
Updated on 27-Mar-2023 210 Views

In Golang we have inbuild function like ok idiom to check whether a given key exist in hash collection or not. Hashmap is a collection of values paired with key in hashmap collection. In this article, we will create a hashmap using the built-in function then we will use ok idiom that returns true false value to check whether a key exists in the map or not. In this way a success or failure statement will be printed. Algorithm Create a package main and declare fmt(format package) in the program where main produces executable codes and fmt helps in ...

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Golang program to merge two hash collections

Akhil Sharma
Akhil Sharma
Updated on 27-Mar-2023 462 Views

In golang we can merge two hash collection by using map function. A hashmap is present in hash collections. It stores key:value pairs. We can perform various operations on a hashmap like merging them. In this article we will merge two hashmaps using a method. In that method, we will create an additional map to store the merged key:value pairs. Then, the map will be printed on the terminal using fmt package. Algorithm Create a package main and declare fmt(format package) in the program where main produces executable codes and fmt helps in formatting input and output. ...

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Golang program to convert the hash collection into the array

Akhil Sharma
Akhil Sharma
Updated on 27-Mar-2023 339 Views

In Go programming language, a hash collection contains a hashmap which holds values in form of key:value pairs. Here, in this particular program we will convert the map into array which is of fixed size and can be accessed via indexing. We will use two examples to execute the program. In the first example, we will use an index variable to add the values in the array and in the second example we will use an append method to add the values in the array. Syntax func make ([] type, size, capacity) The make function in go language is ...

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