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  How does MySQL handle DROP TABLE

A few days ago, when executing DROP TABLE in MySQL, all processes including DDL and DML were hung until DROP TABLE was completed. I am confused about this phenomenon. I have reviewed the source codes of MySQL to check how MySQL internally handle DROP TABLE. When user trigger DROP TABLE command: ########################MySQL SERVER drop table######################## /* Sql_table.cc  delete (drop) tables. */bool mysql_rm_table( )   /*   Execute the drop of a normal or temporary...

   MySQL,DROP TABLE     2012-09-24 11:34:05

  Apple has trouble in Russia now for homosexual promotion

According to The Independent report, Apple is now facing an investigation and a potential fine of up to one million rubles from Russia government. This investigation is about the built in same-sex emotion icons in iOS keyboard. Russia claims that these emotions violated the "Russian LGBT propaganda law" approved in 2013. This law is mainly approved to protect children from exposing to content that promotes homosexuality as being a norm in society—contradicting "traditional" fami...

   SAME-SEX,APPLE,RUSSIA,HOMOSEXUAL     2015-09-27 23:21:44

  Waking up early, 10 tips that work

In this blog post I am going to cover a topic that I have been occupied with for several weeks now: Becoming an early riser. Getting up early can be a great way to help you establish a daily routine which is the first step to becoming more productive. Here I present you 10 tips that helped me in becoming an early riser. 1. Get up The most important step is to get up. Actually not just get up, literally try to jump out of bed. After your alarm rings get up instantly, go to another room and t...

   Body,Rest,Health     2012-04-11 13:44:34

  Guide to Clearing Storage Space on a Macbook

Macbooks are pretty notorious when it comes to what storage space you have available. Those few gigabytes that you have will disappear in no time if you are not careful. The whole issue becomes even more problematic for people who are not that familiar with Macbooks or have switched from another computer. And if you do not pay attention, it will not take too long before you have next to no storage space on the hard drive. Leaving only a few gigabytes of free space will significantly reduce the ...

   MACBOOK,APPLE,DATA STORAGE     2020-08-08 00:21:42

  Frequently used Git commands

Git configuration git config --global user.name "robbin" git config --global user.email "fankai@gmail.com" git config --global color.ui true git config --global alias.co checkout git config --global alias.ci commit git config --global alias.st status git config --global alias.br branch git config --global core.editor "mate -w" # Configure Editor to use textmate git config -l #List all configurations User's git configuration file : ~/.gitconfig Frequently used Git commands Check、add...

   Git,Command     2013-03-11 19:41:06

  JavaScript delete specific item from array

Deleting an item from an array is easy using JavaScript’s built-in method splice(). However, if you are somewhat new to scripting, simply knowing about splice does not help you remove a certain item from an array. This article will solidly state the solution to this dilemma.If you want to remove a specific item from your array, you will simply use a basic loop and a conditional check with the splice()method.Here is a breakdown of what we will do in 3 easy steps, so tha...

   JavaScript,Array,Remove item,Splice,Dele     2011-09-16 16:38:52

  Advanced event registration models

On this page I explain the two advanced event registration models: W3C’s and Microsoft’s. Since neither is cross–browser supported, their use is, for the moment, deprecated. W3C and Microsoft have both developed their own event registration model to replace Netscape’s traditional model. Though I’m not impressed by the Microsoft model, W3C’s is very good, except for one crucial vagueness. Unfortunately few browsers support it at the moment. W3C W3Câ...

   JavaScript,Event model,this,bubble,capturing     2011-12-27 09:20:44

  Will We Need Teachers Or Algorithms?

Editor’s note: This is Part III of a guest post written by legendary Silicon Valley investor Vinod Khosla, the founder of Khosla Ventures. In Part I, he laid the groundwork by describing how artificial intelligence is a combination of human and computer capabilities In Part II, he discussed how software and mobile technologies can augment and even replace doctors. Now, in Part III, he talks about how technology will sweep through education. In my last post, I ...

   Teacher,Algorithm,Development     2012-01-16 10:17:45

  10 Time-Management Tips That Work

Chances are good that, at some time in your life, you've taken a time-management class, read about it in books, and tried to use an electronic or paper-based day planner to organize, prioritize and schedule your day. "Why, with this knowledge and these gadgets," you may ask, "do I still feel like I can't get everything done I need to?"The answer is simple. Everything you ever learned about managing time is a complete waste of time because it doesn't work.Before you can even begin to manage time,...

   Time management,Tips,Work,Overhead     2011-10-10 05:24:01

  Good ways to "insult" a computer scientist

Computer scientists are a group of people who are hard working and talented. They build the theory foundation for information and computation and they usually work on something difficult to understand. Many computer algorithms are created by computer scientists. In our mind, they are those people we admire most. But sometimes we also want to make fun of them or "insult" them. What are good ways to "insult" them? Here we share some. Ask him to make a website for you...and with PHP. Ask them why ...

   Computer scientist,Jokes     2013-08-06 09:32:56

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