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php - What are bytecode and opcode? What's the difference?

Q1 What are bytecode and opcode? Q2 What is the difference? Q3 Do all interpreted languages have similar codes? My understanding is: bytecode and opcode are both intermediate codes. Interpreted languages will translate the source code into intermediate codes, and then the virtual machine (such a...

怪我咯 2017-06-05 11:07:43

What's the difference?

add=function(){} function add(){}

阿驼 2017-12-06 17:00:30

What is the difference between array_push and new array?

I don’t understand what stack means. Looking at the code, it seems to be similar to adding an array. What's the difference?

孽孽 2020-02-27 00:38:03

Why does virtual dom diff algorithm use depth-first traversal?

https://github.com/livoras/bl... Why not use breadth first, want to know the difference?

过去多啦不再A梦 2017-05-18 10:48:54

javascript - I can only talk about the difference between react and reactnative? ?

I recently learned react, and have heard of react native. What is the difference?

世界只因有你 2017-05-19 10:45:08

javascript - Syntax issues about immediately executing functions in JS

{Code...} I found that both of these can print out test. What is the difference? How to understand it? I hope God can enlighten me.

代言 2017-06-12 09:22:50

What are the meanings and detailed differences of MySQL installation options?

1.What are the differences/differences between MySQL database installation options? 2. What are the differences/differences between the options of Config Type? 3. What do the various log file types mean? What's the difference?

天际梦想 2019-02-17 16:17:11

About js code writing position

In js, how to determine whether the <script>·······</script> part is written in the head or the body? What's the difference? Is there any small way to determine which area is written?

益伦 2018-08-11 22:27:02

Problems encountered when setting up the environment

According to the required operations of the course, enter phpinfo(); what comes out is not the interface in the course, but the interface of Apache Company. The difference is that I use Notepad to write the code. Sublime is not used.

cdyusheng 2021-11-26 13:43:08

javascript - What is the difference between vue params and query

{code...} {code...} Except for the different addresses? What's the difference? I feel like these two have the same effect. When should I use query and when should I use params? Or are they basically the same?

漂亮男人 2017-05-19 10:25:58

javascript - What is the difference between ?= and ?: in regular expressions?

Let’s go straight to the example: Add a comma {code...} between every three numbers. Another example that appeared in the previous forum is also add a comma {code...} between every three numbers. Needless to say the concepts of the two. I found an answer saying: The difference is that ?= is a positi...

天蓬老师 2017-06-15 09:22:42

Confused about php recursion?

{Code...} I searched this recursion on the Internet. The more I read his comments, the more confused I became. The following recursion has the same function as it. {Code...} Can you help me analyze the difference between the following functions? Is the comment on the first recursion correct?

黄舟 2017-06-30 09:56:06

What is the difference between "quasar dev" and "quasar dev #"

Completely new to Quasar and am following the video tutorial. The tutorial told me to use "quasardev" but that doesn't work. The information in the "quasarcreate" text tells me to use "quasardev#" (which does work). what is the difference? #What means?

P粉340980243 2024-03-30 09:42:29

nginx rewriting problem

Questions about NG rewriting {Code...} Actually, I want to ask, the two rewriting rules are the same. But it is written in location / and directly under the server. What's the difference. If it is written outside, www.example.com/packages/xxx.apk cannot be downloaded. if...

漂亮男人 2017-05-16 17:24:06

javascript - webpack packaging will package all files under a directory

If configured in the following way, the imported VUE file will only package the vue {code...} I need when packaging. But if I want to set the vue file that needs to be imported according to the configuration, the above page directory will be All vue below are packaged {code...} The difference is: co...

代言 2017-06-30 09:52:21

My vim under Linux has three vimrcs, what are the differences?

I just revised the question, here it is, I am on Linux, and I found that there are three vimrcs: /etc/vim/vimrc, /usr/share/vim/vimrc and /usr/share/vim/vimfiles/vimrc, there are What's the difference?

过去多啦不再A梦 2017-05-16 16:42:19

What is the purpose of DOCTYPE?

I understand that the different document types are essentially about html compliance, but what difference does it make to the document type you specify? Will browsers handle the same code differently depending on document type? Thanks for the update - most answers mention that weird mode can be turn...

P粉779565855 2024-01-28 22:15:26

GET or POST methods: understand the difference and know when to use them

What is the difference between using GET or POST method? Which one is safer? What are their respective advantages and disadvantages? (Similar question)

P粉463811100 2023-10-14 22:54:00

What is the reason why live server cannot be used in React application?

I know it's not possible to serve a React application using a live server. In other words, even if the js is bundled and linked to the HTML file, the React code will not render if you open the file statically. I learned about static and dynamic servers, but since React all happens on the client, I c...

P粉131455722 2023-08-28 10:32:47

Why is useState and functional update forms in React necessary?

I was reading the documentation about ReactHook function update and saw this sentence: "+" and "-" buttons use functional form because the updated value is based on the previous value but I can't see what is the purpose of function update, and the difference between them and usin...

P粉041856955 2023-08-24 13:38:45