The c++ declaration is placed in the a.h file, and the implementation is placed in a.cpp. Why can the class implemented in a.cpp be used by referencing a.h in main.cpp?

Use visual studio to write a C++ program. The C++ declaration is placed in the a.h file, and the implementation is placed in a.cpp. Why can you use the class implemented in a.cpp by referencing a.h in main.cpp, but an error will be reported when referencing a.cpp? . I don't understand the rules very...

为情所困 2017-05-31 10:39:52 0  2  878

I would like to ask, is dependency injection implemented by the framework, or does PHP have this way of writing?

Is dependency injection implemented by the framework, or does PHP have this way of writing?

小泥吧℡₁₈₉ ₈₃₆₃ ₈₀₁₇ 2019-08-04 21:17:48 0  1  1459

PHP uses sleep to implement scheduled tasks. How to quickly return information prompts after sleep?

PHP uses sleep to implement scheduled tasks. After sleep, how to quickly return information prompt sleep(3); how to quickly return information without a three-second delay. It seems to be a bit conflicting, but I don’t know how to end it.

小破孩 2019-07-01 15:09:04 0  3  1527

javascript - Can anyone take a look at how this website is implemented? Some pages are written in Vue.

http://bravetime.davdian.com/This is written by Vue. 1. Is this server-side rendering or a spa application? 2. If it is server-side rendering, how is it implemented? 3. Why not just use php, jsp, ejs? What are the benefits of having to go through so much trouble to implement those templates?

某草草 2017-06-12 09:23:49 0  1  676

golang - What are the usage scenarios of using yield to implement coroutines in php?

I saw an article about PHP using coroutines to implement cooperative multitasking, which was about implementing coroutines through PHP's yield. But the article was too long and I didn’t finish it, so I briefly read it. When will PHP coroutines be used in projects? Or is there any applicable scenario...

某草草 2017-07-03 11:40:23 0  3  1607

html5 form validation

How are the native verification boxes in HTML5, such as required, pattern, etc., implemented when the verification is invalid? Why does a prompt box with different content pop up when it is invalid because different constraints are not met? Is it implemented by combining the invalid event and the va...

天蓬老师 2017-07-06 10:35:42 0  2  1161

javascript - Hybrid development, the difference between Android and Apple

Recently I made a hybrid development app and packaged it with hbuilder, as shown in the picture. The dragging function implemented by my code can be implemented on Apple phones, but not on Android phones. Why

淡淡烟草味 2017-07-05 10:51:14 0  1  961

How to make php code automatically run on win server?

I hope that the php code can continue to run after the browser disconnects. I have tried many methods but none of them work. Simple and direct regardless of the consequences 12345678910 <?phpignore_user_abort();//Close the browser, and the PHP script can continue to execute.set_time_limit (0);// ...

朱 2022-06-06 23:17:51 0  4  1642

How to use file_get_contents to open a php file, search for the specified string, and add other content under it in a new line?

I want to implement a function, because every time the system I use is updated, it will overwrite the piece of code I added. I want to implement this function. If it overwrites my code, I will open that piece of code and add it again. This is this code. If it is covered, I will open this file php fi...

淡淡烟草味 2017-06-28 09:23:06 0  3  980

javascript - vue2.0 realizes that after logging in, all pages do not need to be logged in, and no login is required. The address of any page visited is transferred to the login page. How to achieve this?

After vue implements login, all pages do not need to be logged in, and no login is required. The address of any page accessed is transferred to the login page to implement the idea. The project uses vue2.0 + axios.

大家讲道理 2017-05-19 10:36:19 0  3  811

Convert JAVA method to the same functionality in PHP

Because I only know PHP language here, I don’t understand a Java method very well, and I don’t know how to implement it in PHP. Could you please give me some advice: The Java source code is as follows: {Code...} The above method is done in PHP. How to achieve?

为情所困 2017-07-01 09:12:01 0  2  856

javascript - Asking for help about call and apply, anti-currying

The following are two implementations of uncurring. Implementation 1 {code...} Implementation 2 {code...} The two results are the same, but I am a little confused about the second implementation, mainly here {code...} I was instantly enlightened by you, thank you! louiszhai {code...}

淡淡烟草味 2017-05-16 13:41:58 0  2  490

Query paging

Please tell me why when I click the next page for my paginated query, there are query results that appear? Pagination after query cannot be implemented

思睿 2018-10-18 10:49:05 0  0  1293

Syntax highlighting color setting for <code> tag in HTML

In code snippets like the one below... classFoo{internalFoo(){for(inti=0;i&lt;42;++i);}}... when they are displayed in my browser, various Keywords etc. will be colored. When I click "View Source" I don't see any special HTML code to achieve this coloring. So how is this color highligh...

P粉032649413 2023-08-22 16:48:45 0  2  668

javascript - How to implement nested methods with specified depth in js

I met an interview question today. I found a problem when using js to implement an algorithm. How to use js to implement such a method. Given a function and nesting depth (int type), return a nested structure as shown below? Given parameters: fn, deepLength Return structure (take deepLength=3 as an ...

PHP中文网 2017-05-19 10:43:39 0  3  469

javascript - Why doesn't the one that automatically changes the background of the two scripts execute?

Some time ago, I confessed that the webpage was very interesting, so I tried to watch the video and wrote the code, but why was the script for automatically changing the background not executed? Please help me. ## Only one of the two scripts is implemented ## {code...}

天蓬老师 2017-06-08 11:02:49 0  3  868

css - JavaScript/Jquery style reset problem, please give me some advice

By default, a method A() is executed, which will modify the order and style of the elements, and then need to restore these elements to their original state. Could you please tell me how to do this? The most important thing is that method A is executed by default. After some operations, I want to re...

伊谢尔伦 2017-05-24 11:37:03 0  5  751

Securing Next.js routes with Supabase

I am implementing route protection by creating a protection page and whenever the user is not logged in I wrap it in the page to be protected but if the user is logged in he/she is returned to the login page what do I want to know My protected page is missing. Here's what I implemented in Protect.js...

P粉111627787 2024-04-06 11:13:00 0  1  578

javascript - How to use vue components to dynamically generate router-link

{Code...} Although the current problem is feasible, an error that the component is not registered will be reported before vue-router is executed. I would like to ask if you have a better dynamic implementation method. Original problem↓ As shown above, it needs to be dynamically generated. Side routi...

过去多啦不再A梦 2017-06-26 10:53:30 0  1  885

javascript - Please explain the following algorithm code

It’s about the code of this algorithm, implemented in javascript, but I don’t understand the algorithm below. Ask God to explain. {code...}

習慣沉默 2017-07-05 10:41:45 0  1  930