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486 views

1 answer

macos catalina - startosinstaller os upgrrade with pkg installation

I am trying to upgrade OS using startosinstall command, with OS want to install pkg too, using ... pick package from unwrappedinsstallers Any suggestion will be helpfull...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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286 views

1 answer

javascript - avoid html button being clicked again before it disapears (django)

I'm working in a Django project which has events that can be joined by users (adding the user_id and event_id to a model ... ="Leave Event">add</i>Leave Event </button> </form>...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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387 views

1 answer

c++ - Why is my code size so big without implementation?

Recently, I'm starting to develop a project on Microblaze using C++. I just created the project and added nothing but a few ... and I'm pretty sure that my platform is one of them....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

validation - Validate duplicate email entries in service ASP.NET CORE MVC (c#)

I want my Edit method in my CRUD page to not allow duplicate email entries. If a user tries to enter an email that ... , Email = email }); await _context.SaveChangesAsync(); } }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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803 views

1 answer

vue-cli3默认生成打包的文件名是chunk-hash这种格式的，怎么改能每次生成固定的文件名？

这样每次修改代码后打包生成的文件都和原来完全不一样，能不能生成固定的可读性更强的文件名称？需要在vue.config.js里面怎么改？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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673 views

1 answer

react 使用useEffect 异步函数数据更新 demo不更新

使用了一个立即执行函数异步的但是如果我没有执行下面那个 if (code == 'update') { setFormData(parentObj); } 初次渲染demo视图是不会发生变化的，对hooks的渲染机制不是很了解，求大佬指点。...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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631 views

1 answer

shell - How to select option when click “Enter” button?

I have this code, im clicking "y" button to Skip, i want change it to Enter button. Codes: echo -e "(corona) > Press "Y" to ... == "y" ]; then echo -e "(corona) > Exiting... c"...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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441 views

1 answer

jquery - send_keys is selecting wrong options [selenium python]

I need the option 'IS' to be selected. Options: IS OOS OOS, MT IS, AINS Dropdown image HTML: <span role=" ... me a solution or alternate way using Javascript to solve this problem?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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668 views

1 answer

使用audio播放音频时，oncanplay始终没有执行

const audio = document.querySelector('#audioVoice') audio.src = `http://192.168.100.249:8080/index/${REGIONAL_MAP.get(this.state.listData[ ... 码，页面上是有声音播放出来的，下面的oncanplay就是没有执行...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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858 views

1 answer

flutter - How can I initialize my app with provider?

I choose to use provider as my state management so I saw I have to use Multi provider. My struggle is how to architect my code ... title: 'Flutter Demo Home Page'); } }), ); } }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

1 answer

navigation - Make a Bootstrap Navbar work on Wordpress (navwalker installed)

I'm trying to make a navigation bar where the navigation is a bit transparrent and blurs the background. I have ... up with anything. I have not tried wordpress until recently....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

社交应用中的双双匹配数据设计

背景社交用户的双双匹配男方A，女方B，通过基本信息和异性要求，如年龄，收入等，可以得出一个双方的匹配分值匹配表结构如下男方女方男方匹配女方分数女方匹配男方分数 A B 99 89 已知问题现在用户量10W，匹配表数据 ... 速度而已希望解决 1.不知道有没有架构或者体系，能够解决以上问题 2.考虑过MYSQL的空间索引，但是不知道如何结合...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

DolphinDB怎么把[2011.01M,2011.02M,...]转成[201101.csv,201102.csv,...]

DolphinDB怎么把[2011.01M,2011.02M,...]转成[201101.csv,201102.csv,...]？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

2.2k views

1 answer

How can I perform ansible error-handling at playbook level?

I have a main playbook which imports other playbooks to perform actions in several machines. machine1 is a hub where test ... a strategy/way to accomplish this? Many thanks, José....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.3k views

1 answer

Android path in the Fileprovider is not recognised

I get this following exception for xlsx, msg and xml Caused by java.lang.IllegalArgumentException: Failed to find ... the bug because do not understand where is going wrong...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

2.2k views

1 answer

vue-cli3 如何查看打包时间

以前webpack在打包时会把打包时间答应在命令行工具中，现在vue-cli3打包并不会打印在命令行中；请问如何解决...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.4k views

1 answer

如何配置才能让prettier 格式化scss时不要强制性换行注释语句？

比如下面例子，格式化前格式化后，会强制把注释语句换行这种时候再折叠代码，就看不到注释了如何修改prettier的配置可以让注释语句不强制性换行呢？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.7k views

1 answer

javascript - useSelector, and properly switching slices of data to avoid excessive slow downs

I have a list of objects - each with various properties... the list is about 4000 long. there is a reason to ... still looking for further optimization - but that was a big step!...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.8k views

1 answer

我不能理解redux无法处理异步状态这个说法

我的理解是，redux-thunk或redux-saga的出现只是为了把异步业务代码从组件剥离，而并非解决redux无法处理异步状态问题的把？纯redux使用中，完全可以在useEffect调用接口，并在回调函数中dispatch同步 ... 和redux-thunk类似，只不过用的是generater函数而已我想请教一下，我这么理解有什么问题吗？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.2k views

1 answer

It's possible to set HTTP headers with htaccess?

i have website on PHP and i wont to know how to set this HTTP headers: Last-Modified If-Modified-Since Cache-Control ETag For ... YES, how to make it? Thank you so much on advise!...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.3k views

1 answer

python - getting module has no attribute error after compiling with f2py

I have ran into a problem, while trying to make a bunch of Fortran code work in Python using f2py (in gfortran). My ... . What I can I do to make python recognze this subroutine?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.5k views

1 answer

关于框架传值

vue-element-admin我想使用分页组件，我该怎么传值，和怎么写事件把点击的一页显示多少条数据和当前是第几页情况传值过去？表示没懂啊。...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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22.2k views

1 answer

mysql - how to shift back the date by a certain number of days v2

I have the following problem: I have a table in which in the first column there are dates, in the second information whether a day is ... 01.2021 1 2 12.01.2021 1 3 12.01.2021 1 4...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.5k views

1 answer

apache kafka - ERROR Failed to handle: Command{statement : This version of ksqlDB does not support executing statements submitted prior to ksqlDB 0.8.0

I had tried creating stream by installing ksql server and client using confluent zip / tar file and it had worked . ... luck about this on internet. Can anybody help with this?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.6k views

1 answer

IndexError: list index out of range and python(With array 2D)

title_list = [['determined', 'by', 'saturation', 'transfer', '31P', 'NMR'], ['Interactions', 'of', 'the', 'F1 ... i going to stucking in this (IndexError: list index out of range)....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.1k views

1 answer

c - Keep leading zeros when integer length is unknown

The following program reverses user input. However, for numbers with trailing zeroes, the zeroes are 'ignored' when ... example: Enter an Integer: 3000 Reversed Number = 0003...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.6k views

0 answers

git - How to reference 'environment' in github action workflow?

I have the environment created named "main", but the workflow below errors out: environment created: Below is my ... 'environment' How can I reference this environment to work?...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

4.7k views

1 answer

lodash.isArguments

arguments.js 1.为啥这里要==，而不是=== 2.为啥要判断是不是isObjectLike，可以举例除了类对象，哪里还能得到arguments吗 arguments. ... isArguments(value) : isArguments(); }); assert.deepStrictEqual(actual, expected);...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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