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Still a little ignorant

Still a little ignorant

A0专汽定制 2019-03-04 16:36:42

python - Argparse library reports error when using too few arguments

{Code...} When I run it, I get an error usage: ascii.py [-h] [-o OUTPUT] [--width WIDTH] [--height HEIGHT] {Code...} ascii.py: error: too few arguments

天蓬老师 2017-06-12 09:27:25

javascript - A little doubt about Promise

{Code...} Is the above code synchronous? That is, if there is p.[[state]], then fulfilled should be printed, not pending. The callback function in the p.then method is asynchronous, so there should be no problem.

为情所困 2017-05-19 10:36:01

A little question about xpath in Python

There is a piece of html code as follows: {code...} What should I do if I want to use xpath to extract My Python Examples?

过去多啦不再A梦 2017-05-18 10:57:45

Little doubts about java generic classes

There is a class defined as class Gift<T>{...}. When I create a new Gift object, such as Gift<Phone> myGift = new Gift<Phone>What type is the myGift object? It is Gift, Phone , or Object? I read a paragraph on a blog that said, in practice...

習慣沉默 2017-05-17 10:03:19

javascript - A little doubt about nodejs handling concurrency

On a whim, I defined a route in express: {code...} The test is as follows, open N browser tabs; open the first tab and access localhost:3000/, open the second tab and access localhost within 6 seconds :3000/It is found that the first request is before the end of res.send() and the second...

巴扎黑 2017-05-16 13:39:29

javascript - A little doubt about js prototype and _proto_

The function will create a prototype attribute pointing to the prototype object, so prototype is a function-specific attribute and all objects in chrome seem to have the _proro_ attribute, so what is _proto_? Pointer to prototype object? What about _proto_ in the prototype object? Please clarify, th...

伊谢尔伦 2017-05-19 10:26:34

javascript - A little doubt about the Holy Grail layout

This is a standard holy grail layout and this is the html code {code...} sheng.png

学习ing 2017-07-05 10:54:07

What is the difference between HTML and form ID CLASS NAME?

some confusion

Sirius 2021-12-23 17:19:37

How to use vim to quickly organize numbers

There is such a number in my file: {Code...} I want to use vim to organize it like this: {Code...} This file is very long, and it will definitely not be efficient if I work it out bit by bit. Is there any way to record macros? Any solution?

phpcn_u1582 2017-05-16 16:35:48

This section is so difficult! !

Just give me some guidance from God.

但行好事莫问前程 2021-09-30 00:35:00

What about the rest?

More permissions to load the last little bit of menu without!

俗俗不可耐 2018-08-21 17:45:30

How to remove the bottom blank line in vim full screen?

The purple part at the bottom also has a border and a little

巴扎黑 2017-05-16 16:39:42

How come there are so few videos and they don't match up with the previous class?

Please tell me, teacher, why are there so many videos that I can’t keep up with the class?

拼搏奋斗 2019-10-08 17:35:48

Under what circumstances does MySQL use transactions?

Could you please give me some guidance, under what circumstances are MySQL transactions enabled?

TAO 2018-05-11 14:33:44

javascript - How to add a comma to every 3 numbers in js recursively?

For example, 234234 becomes 234,234. Looking for recursive implementation, the less code, the better.

習慣沉默 2017-05-19 10:36:04

javascript - How to implement the animated background of btcc.com's homepage?

When the site loads, the background has a little animation effect, which is just right. https://www.btcc.com/

大家讲道理 2017-05-16 13:26:40

Browser-sync installation failure problem

As shown in the picture, there is an installation failure problem. Thank you for your guidance.

正念的奇迹 2017-07-08 07:38:37

python - How fast can everyone learn a new language?

Why did I learn it in one day? Is it a little abnormal, so I want to ask?

高洛峰 2017-06-14 10:52:55

php time processing

echo date('Ymt',strtotime('201812')); The result is: 20181130. I have little talent and knowledge. I don’t know why it is this result instead of 20181231. I hope you guys can give me some answers.

思何 2018-11-06 16:47:44