Tag：Tricks
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Time：2021-5-12
Hello, I’m Liang Xu. A lot of people ask me, Liang Xu,What time did you spend so much time and energy on writing the official account from the media? In fact, the reason is very simple. I want to be a sideline. If I really lose my job at the age of 35, I will […]
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Time：2021-3-30
preface This article is included in the album:http://dwz.win/HjK, click to unlock more knowledge of data structure and algorithm. Hello, I’m brother Tong, a hard core man who climbs 26 floors every day and doesn’t forget to read the source code. In the last section, we learned several symbols to represent the complexity. We said that […]
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Time：2021-3-18
PS: I give myself a nickname. You can call me 233 sauce Why brush leetcode To quote from the left ear mouse uncle mouse: ““ The questions on leetcode are used by some classic companies to interview candidates. Many people use these questions to apply for companies that like interview algorithms, such as Google, Microsoft, […]
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Time：2021-3-8
preface This article is included in the album:http://dwz.win/HjK, click to unlock more knowledge of data structure and algorithm. Hello, I’m brother Tong, a hard core man who climbs 26 floors every day and doesn’t forget to read the source code. In the previous section, we used bitmap to introduce the implementation of 12306 ticket grabbing […]
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Time：2021-2-5
A small tool that can query the historical stock price online. At present, it can query the historical stock prices of a shares, Hong Kong shares and U.S. stocks. In addition, it can download the historical stock price excel of individual stocks, which is very useful for analysis and research Download in two steps: Fill […]
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Time：2020-10-23
Hello, I’m Liang Xu. Many people asked me, “Liang Xu,What time did you spend so much time and energy on writing the official account from the media? In fact, the reason is very simple. I want to do a sideline job. If I really lose my job when I’m 35, I have at least another […]
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Time：2020-10-17
Before reading This project is the first time to use the example of Redux and does not have professional theoretical knowledge. Share the development process and experience. Before that, I wrote a small blog post about react native todolist that didn’t join redux. This project is also completed on the basis of the original decoration. […]
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Time：2020-10-5
background When you write a struct in go, you often encounter setting functions for each field in the struct. This question seems very simple and easy. In fact, it bothers many people. Even rob pike, one of the three go giants, has been troubled by it for a while. Later, he found out the best […]
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Time：2020-6-18
When you see a lot of people writing code to update cached data,Delete the cache before updating the database, and subsequent operations will reload the data into the cache.However, the logic is wrong。 Imagine two concurrent operations, one is the update operation, the other is the query operation. After the update operation deletes the cache, […]
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Time：2019-11-15
01. Object constructor mode Method 1: object constructor mode*Routine: create an empty object object first, and then add properties / methods dynamically*Applicable scenario: uncertain internal data of objects at the beginning*Problem: too many statements //A person: Name: “Tom”, age: 12 var p = new Object() p = {} p.name = ‘Tom’ p.age = 12 p.setName […]
