I was forced to learn these Python efficient programming skills because of the project's progress.

In the work, we often have to deal with all kinds of data. It is easy to waste time writing functions when we meet the project schedule. Python has many built-in functions to help you improve your work efficiency! First: In the list, the dictionary ...

Posted on Fri, 16 Aug 2019 06:08:55 -0700 by sabbagh

The Inside of c++ Polymorphism

c + + polymorphism is the use of a secondary pointer (pointer array), each element in the array is pointed to, with virtual modified member functions. Now that pointers are mentioned, let's prove them with memory addresses. To prove this, we have to get the first address of the member function. Get the address of the member function by using th ...

Posted on Fri, 16 Aug 2019 02:42:09 -0700 by infyportalgroup

Object-Oriented Operator Overloading of Python Full Stack Road Series

The concept of operator overloading is as follows: Operator overloading allows classes to intercept regular Python operations; Class can overload all Python expression operators. Classes can also overload built-in operations such as printing, functi ...

Posted on Fri, 16 Aug 2019 00:23:08 -0700 by jesserules

Rootkit and Backdoor Hiding Technology

Catalog brief introduction linux virtual file system VFS Functions of rootkit Hidden files Basic methods Advanced methods System Call Process hook sys_getdents Call Tree of sys_getdents Bottom-level approach Hidden process Log modificat ...

Posted on Thu, 15 Aug 2019 05:44:52 -0700 by phpscriptcoder

Deep Understanding of Promise-Promise's Characteristics and Methods

What is promise? Promise, which means to promise you a result after a period of time (usually an asynchronous operation), is a solution to asynchronous programming. Grammatically speaking, native Promise is an object from which messages for asynchronous operations can be obtained. Characteristics of promise The state of the object is not affect ...

Posted on Thu, 15 Aug 2019 03:14:32 -0700 by koldstar

Validation introduced by SpringMVC

Data validation on the client side is not safe and effective for any application, which requires us to validate the validity of data on the server side when developing.SpringMVC has its own good support for data validation on the server side. It can validate the validity of data we submit to the server side according to our prior conventions. F ...

Posted on Wed, 14 Aug 2019 23:53:57 -0700 by PHPGuru_2700

JavaScript Data Structure--Implementation of Diagram

In computer science, a graph is an abstract model of a network structure composed of a set of vertices connected by edges.A graph G = (V, E) consists of the following elements: V: A set of vertices E: A set of edges that connect the vertices in V The following diagram shows the structure of a graph: Before describing how to implement di ...

Posted on Wed, 14 Aug 2019 22:02:42 -0700 by RobNewYork

python thread base

A basic concept 1 Parallel and concurrent 1 parallel Do something at the same time, you can do something at the same time without interrupting each other For example, a lane on a highway can have multiple non-intrusive vehicles running at the same timeIt is a concept that at the same time a vehicle may be running on each lane. 2 Concurrent, ...

Posted on Tue, 13 Aug 2019 18:20:22 -0700 by Silverlime

Java implements dynamic arrays of data structures

array Array is a kind of data structure that comes into contact with first when learning programming language. This chapter realizes dynamic array based on Java static array and makes simple complexity analysis. public class Array<E> { private int size; private Object[] data; public Array(int capacity) { size ...

Posted on Tue, 13 Aug 2019 06:37:26 -0700 by zippee

File Transfer - JavaIO Stream

Preface Recently, I found that I am not proficient enough in IO flow, so I spent half a day systematically practicing my hand with a set of lessons in Mou class. The notes and codes are arranged as follows, which is also mixed with my own understan ...

Posted on Tue, 13 Aug 2019 05:08:17 -0700 by richinsc