Programmer Group

Evening moon preface Originally, I intended to write the principle of the global event bus in Vue, but I found that I wrote less about the custom event, did not understand the operation of the custom event, and it was difficult to write the principle of the global event, so I had this article. 1, v-on instruction To talk about custom event ...

Ordinary Hanoi Tower Interested children's shoes can contact and communicate with me~ Official account: swim the code sea more high quality original articles are inside! The Tower of Hanoi is a mathematical problem based on a legend: There are three poles A, B and C. There are N (N > 1) perforated discs on rod A, and the size of the ...

What is TCC? TCC is the abbreviation of Try, Confirm and Cancel. It was first proposed by a paper entitled Life beyond Distributed Transactions:an Apostate's Opinion published by Pat Helland in 2007. TCC composition TCC is divided into three stages Try phase: try to execute, complete all business checks (consistency), and reserve necessary b ...

catalogue preface 1, Definition and characteristics of stack? 2, Implementation of stack 2.1 sequence stack 2.1.1 structure definition of sequence stack 2.1.2 initialization of sequence stack 2.1.3 judge whether the stack is empty or full 2.1.4 stacking 2.1.5 out of stack 2.1.6 preview stack top elements 2.2 chain stack 2.2.1 struct ...

Absrtact: it is inevitable to record sensitive operations in business systems, which can be realized by hard coding or simple annotation, but they are not elegant enough. Today, I share a log tool written by myself. This is a logging tool implemented with reference to an article by meituan. It can record operation logs flexibly and has good ...

Foreword: in the last article, we learned the sequence table and found that we have a certain grasp of the concept of the sequence table, but after learning the sequence table, we found that there are some places that we can't do better or difficult to do, so we have a linked list. This article will take you into the study of the linked list! ...

five   Einstein ladder Title No.: Exp02-Basic10,GJBook3-04-15 Title: Einstein ladder Problem Description: there are steps. I don't know the number, but I know: each step spans 2 steps, and there is 1 step left at the end; Each step spans 3 steps, and there are 2 steps left at last; Each step spans 5 steps, and finally there are 4 ...

Subscript references, function calls, and structure members [] subscript reference operator Operand: an array name + an index value #include<stdio.h> void main() { int arr[10]; //Create array arr[9] = 10; //Use subscript reference operators //The two operands of [] are arr and 9 } () function call operator The function ope ...

preface Over the past few years, I have been struggling in the it industry. Along the way, many have summarized some high-frequency interviews in the python industry. I see most of the new blood in the industry, and I still have all kinds of difficult questions for the answers to all kinds of interview questions or collection Therefore, I dev ...

Review review Python provides a large number of excellent function packages for data display. Among them, matplotlib module can easily draw and make high-quality data packages such as line chart, histogram and scatter chart. About the matplotlib module, we have studied the basic framework and common methods of matplotlib in the early stage P ...