Java Integer Operations

Original link: https://www.lifengdi.com/archives/course/java/3908 Java’s integer operations follow four arithmetic rules and can use any nested parentheses. The four arithmetic rules are the same as those of elementary mathematics. For example: // Four arithmetic public class Main { public static void main(String[] args) { int i = (100 + 200) * (99 – 88); // 3300 […]

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Keep track of the latest internet quirks

Original link: https://www.bboy.app/2022/07/15/%E8%AE%B0%E5%BD%95%E6%9C%80%E8%BF%91%E5%8F%91% E7%94%9F%E7%9A%84%E7%BD%91%E7%BB%9C%E6%80%AA%E4%BA%8B/ Introduction The thing is like this, last week, during the house cleaning, I cleaned the cabinet by the way, and after restarting all the services, I found that the NAS could not back up my application virtual machine. Other virtual machines under the same physical machine can connect to this application

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Abundant life

Original link: https://blog.shuiba.co/rich-life 2017, looking back now, was a year of great significance. In 2017, I am 29 years old, I have worked for three years, and my life is very stable. As I approached my thirties, I became more and more eager to understand the meaning of my existence and life. In 2017, Brother

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Variables and data types

Original link: https://www.lifengdi.com/archives/course/java/3907 Variables What are variables? Variables are the algebraic concept of junior high school mathematics, such as a simple equation, x and y are variables: y=x^2+1 In Java, variables are divided into two types: basic type variables and reference type variables. Let’s start by discussing basic types of variables. In Java, variables must

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Java program basic structure

Original link: https://www.lifengdi.com/archives/course/java/3906 Let’s first analyze a complete Java program, what is its basic structure: /** * Comments that can be used to automatically create documents */ public class Hello { public static void main(String[] args) { // Output to the screen Text: System.out.println(“Hello, world!”); /* Multi-line comments start comment content Comment end */ }

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Introduction to Java

Original link: https://www.lifengdi.com/archives/course/3905 Java was originally a programming language developed by James Gosling (Gao Commander, known as the father of Java) of SUN (which has been acquired by Oracle) in the early 1990s. It was originally named Oak and aimed at small The embedded application of home appliances, the result is that the market has

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Earth FM Around nature with ears

Original link: https://conge.github.io/2022/07/14/earth-fm/ Today I would like to introduce a sound website called Earth FM, Earth FM. Earth FM is a pure sound website that includes natural sounds from all over the world, allowing people to travel by ear without leaving home. Go try it, maybe you will like it too. This article is reprinted

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Toots 2022 Jul.3 – Jul.9

Original link: http://z.arlmy.me/posts/MastodonArchives/2022/MastodonTootsArchives_20220709/ Jul.3 All paths, there is always a certain way Business is developed, and there is the illusion that replicas are more likely to become a source of wealth, “Indecision itself is the equivalent of making a decision” “With the widespread use of ES, its security issues have also attracted attention. Although ES

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Who overturned “Roe v. Wade”

Original link: https://zhengziying.com/2022/07/14/%E8%B0%81%E6%8E%A8%E7%BF%BB%E4%BA%86%E7%BD%97%E4% BC%8A%E8%AF%89%E9%9F%A6%E5%BE%B7%E6%A1%88/ Judging from the results, the “Roe v. Wade case” was overturned by a 6-3 vote of six Supreme Court justices. Others say that “Roe v. Wade” was overturned by Trump because three of the six judges were appointed by Trump. I think if you go back a little further, the culprits

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I heard that Ali’s intranet does not delete posts

Original link: https://zhengziying.com/2022/07/14/%E5%90%AC%E8%AF%B4%E9%98%BF%E9%87%8C%E5%86%85%E7% BD%91%E4%B8%8D%E5%88%A0%E5%B8%96/ Yes, Ali Intranet does not delete posts. It’s not that Alibaba doesn’t delete posts, it’s that Alibaba’s intranet doesn’t delete posts. Occasionally, people who post will clear their own posts and leave a sentence “The problem has been solved”. Every time this kind of thing happens, people in the market will

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Easily analyze data with VisiData

Original link: https://limboy.me/posts/visidata/ On Hacker News, I saw an article on how to easily operate CSV through SQLite . Using sqlite3’s native support for csv, execute SQL query on csv to get the data you want. It’s really convenient to try: tweets.csv is personal data exported from Twitter. You can find the option to download

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