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Introduction Docker is a popular containerization platform that allows users to package and deploy applications in a standardized and isolated environment. Docker uses a file called a Dockerfile to specify the instructions for building and running a Docker container. One important element of a Dockerfile is the VOLUME instruction, which specifies a mount point for a volume in the container. In this article, we will explore the purpose and usage of volumes in a Dockerfile. Definition of volume in Dockerfile In the context of Docker, a volume is a persistent storage location that exists outside of the container. Volumes ... Read More
The services provided by the transport layer are explained below −Address MappingIt means mapping of transport address onto the network address. Whenever a session entity requests to send a transport service data unit (TSDU) to another session entity, it sends its transport service access point address as its identification. The transport entity then determines the network service access point (NSAP) address. This is known as address mapping.Assignment of Network ConnectionThe transport entity assigns a network connection for carrying the transport protocol data units (TPDUs). The transport entity establishes this assigned network connection. In some of the transport protocols, recovery from ... Read More
We can join two or more tensors using torch.cat(), and torch.stack(). torch.cat() is used to concatenate two or more tensors, whereas torch.stack() is used to stack the tensors. We can join the tensors in different dimensions such as 0 dimension, -1 dimension.Both torch.cat() and torch.stack() are used to join the tensors. So, what is the basic difference between these two methods?torch.cat() concatenates a sequence of tensors along an existing dimension, hence not changing the dimension of the tensors.torch.stack() stacks the tensors along a new dimension, as a result, it increases the dimension.StepsImport the required library. In all the following examples, ... Read More
First, we can define our dictionary and then, convert that dictionary into keys and values. Finally, we can use the data to plot a bar chart.StepsCreate a dictionary, i.e., data, where milk and water are the keys.Get the list of keys of the dictionary.Get the list of values of the dictionary.Plot the bar using plt.bar().Using plt.show(), show the figure.Exampleimport matplotlib.pyplot as plt data = {'milk': 60, 'water': 10} names = list(data.keys()) values = list(data.values()) plt.bar(range(len(data)), values, tick_label=names) plt.show()Output
This error comes whenever we add a foreign key constraint between tables and insert records into the child table. Let us see an example. Creating the child table. mysql> create table ChildDemo -> ( -> id int, -> FKPK int -> ); Query OK, 0 rows affected (0.86 sec) Creating the second table. mysql> create table ParentDemo -> ( -> FKPK int, -> Name varchar(100) -> , -> primary key(FKPK) ... Read More
This is a C++ program to read file line by line.Inputtpoint.txt is having initial content as "Tutorials point."OutputTutorials point.AlgorithmBegin Create an object newfile against the class fstream. Call open() method to open a file “tpoint.txt” to perform write operation using object newfile. If file is open then Input a string “Tutorials point" in the tpoint.txt file. Close the file object newfile using close() method. Call open() method to open a file “tpoint.txt” to perform read operation using object newfile. If file is open then Declare a ... Read More
If you have an image stored in the public folder of Laravel, you can access or, display it in the browser using various methods. In this article, we will learn some of these methods. Assume we have the image of a flower (flower.jpg) stored in the Public folder as shown below Now let us use the image to view inside the browser. Using url() method The url() helper function helps to return you the full path i.e., it will add the HTTP or HTTPS and return the complete path for the given URL. For example, consider the following URL ... Read More
Canvas is undoubtedly one of the most versatile widgets in Tkinter. With Canvas, we can create shapes, texts, animate stuff, modeling 3D shapes, modeling simulations, and many more.In order to add text inside a tkinter frame, we can use the create_text() method. We can define create_text() by adding values of font, text, and other options such as create_text(x, y, font, text, options….).Example#Import the required library from tkinter import * #Create an instance of tkinter frame win= Tk() #Set the geometry win.geometry("750x280") #Create a canvas object canvas= Canvas(win, width= 1000, height= 750, bg="SpringGreen2") #Add a text in ... Read More
The computer system is a combination of many parts such as peripheral devices, secondary memory, CPU, etc. This can be explained more clearly using a diagram.The salient points about the above figure displaying Computer System Organisation is −The I/O devices and the CPU both execute concurrently. Some of the processes are scheduled for the CPU and at the same time, some are undergoing input/output operations.There are multiple device controllers, each in charge of a particular device such as keyboard, mouse, printer etc.There is buffer available for each of the devices. The input and output data can be stored in these ... Read More
ER model stands for the Entity Relationship Model in the database management system (DBMS). It is the first step of designing to give the flow for a concept. It is the DFD (Data Flow Diagram) requirement of a company.It is the basic building block for relational models. Not that much training is required to design the database project. It is very easy to convert the E-R model into a relational table or to a normalized table.It is a high-level data model diagram that defines the conceptual view of the database. It acts as a blueprint to implement a database in ... Read More