Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Lists are one of the four most commonly used data structures provided by Python. A list is a data structure in python that is mutable and has an ordered sequence of elements. Following is a list of integer values. lis= [1, 2, 3, 4, 5] print(lis) If you execute the above snippet, it produces the following output. [1, 2, 3, 4, 5] In this article, we will learn how a del operator works on a list in python. They are various scenarios where we use the del operator. The del operator The del keyword is mostly used in ... Read More
It is essential for the user to know about the processes that are running in their system, be it foreground or background. To do so in windows we have a task manager but internally it uses a program called tasklist. Tasklist aside from giving us the currently running processes, it also gives us details like process id, session name, session and memory usage of each process. In this article we will see how we can get a list of currently open processes by using Java programming language. Algorithm Step 1 − Create a process that executes the tasklist.exe Step 2 ... Read More
The "canvas" element merely serves as a container for visuals; drawing the graphics requires the use of a scripting language. It is a procedural, low-level model without an internal scene that updates a bitmap. The drawImage() function is what we employ to draw an image onto a canvas. This feature transfers a video, canvas, or picture to the canvas. Syntax context.drawImage(img, x, y, swidth, sheight, sx, sy, width, height); Where, Img − Determines whether to utilise a video, canvas, or image. Sx − The starting x coordinate for clipping. Sy − The y point at which clipping should ... Read More
In this article, we will write Golang programs to print pointer to a struct. A pointer stores the address of the memory location where the variable’s value is placed. We can the access the address of the variable using & operator. For ex= &a tell the address of the a. Example 1 In this example, we will write a Golang program to show the pointer to a struct by creating a child struct and printing the pointer to that struct. package main import "fmt" type Child struct { name string age ... Read More
In this Golang article, we will write programs to demonstrate passing of pointers to a function suing increment and Swapping approach. A pointer stores the address of another variable. For ex- var *a = &b. Here a is the pointer that stores the address of b which means a can access the value of b as it stores the address of b. Using the Increment Approach In this method, we will write a Golang program to demonstrate the passing of pointers to a function by using an increment function where we use pointers to point to the variable which is ... Read More
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 More
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 More
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 More
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 More
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 More