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Welcome to Our Knowledge Sharing Community-Open, Learning,Share

Welcome to developer's Knowledge Sharing Community-Open, Learning,Share 欢迎来到程序员专属的知识分享社区! 一个分享知识，传递知识，学习知识的社区！...

asked Feb 5, 2021 in Others[杂七杂八] by ostack (1.4k points)

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309 views

1 answer

How to model cross fragment transaction (ongoing process) in Android MVVM application?

I am developing an app that has some ongoing process that almost all screens depend on. Let's call it ActiveTransaction. So, one fragment prepares items, the ... the app State? I haven't found anything in the MVVM architecture guidelines....

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

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261 views

1 answer

javascript - Adding a "pause" functionality to a setInterval timer

I'm asking this because I haven't seen another solution in a similar layout to how I've done it. Essentially I'm building a simple countdown timer for a ... `; startBtn.style.display = "Inline"; pauseBtn.style.display = "None"; });...

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

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329 views

1 answer

java - How to set correct time with AM PM with Calendar object?

Simple question why the result is like the following for this code: Calendar cal2 = Calendar.getInstance(); cal2.set(Calendar.HOUR, 12); cal2.set(Calendar.AM_PM, ... AM or PM multiple times change the result? How to set the time correctly?...

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

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601 views

1 answer

DolphinDB创建内存表时报错：std::bad_alloc

在使用DolphinDB创建一个内存表时，执行如下代码： appendRows = 100000000 dateRange = 2010.01.01..2018.12.30 ints = rand(100,appendRows) symbols = take(string('A'..'Z'),appendRows) dates ... 2020.10.21 12:41:06.400: executing code ... std::bad_alloc 请问是哪里出问题了？...

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

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270 views

1 answer

react 组件重新渲染机制

react组件更新和渲染是两个不同过程，可以通过shouldComponentUpdate控制是否渲染今天遇到一个问题，就是父组件数据list不放state里面，然后list通过props传给子组件，异步修改数据list时候,父子组件都没有触发更新和渲染，直接体现就是子组件拿到的props还是原来的是不是可以 ... 听state的数据，然后触发对应的更新和渲染不在state中的数据，即使绑定子组件props，因为父组件未更新，造成子组件props也不会触发更新 ...

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

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725 views

1 answer

Yii2添加request的baseUrl后加载的资源url也会加上这个baseUrl导致加载的不对

我的是Advanced版本，我frontend和backend是单独用不同域名的，由于怕权限管理里面跟前台的路由有相同的，所以就在后台的路径里添加个/admin 具体是在backend的main.php的components里添加baseUrl => /admin添加，添加后，页面是可以访问的，就是url多 ... ; 所以想问一下大佬们，怎样设置能让assets不添加这个/admin？感觉这个文件backend/assets/AppAsset.php里应该可以设置才对呀 ...

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

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575 views

1 answer

DolphinDB集群搭建后，在web界面启动数据节点时报错

按照DolphinDB多机集群搭建完成后，已经在server端启动了控制节点和代理节点，登录web界面，在启动数据节点时，出现如下错误：请问哪里出问题了？...

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

0 votes

1.0k views

1 answer

微信小程序预览是网络请求发不出去，真机调试就可以，配置了https合法域名

微信小程序预览是网络请求发不出去，真机调试就可以，配置了https合法域名...

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

0 votes

916 views

1 answer

Vue插件什么时候需要传插件实例给Vue构造函数

在用 vue + element-ui + vue-router + vue-i18n 刚开发完一个项目后，看到 vue-router 和 vue-i18n 都传了实例给 Vue 构造函数，而 element-ui 没有，想问问什么时候该传，什么时候不用传，原理是什么？我的项目构造 main.js 文件: new Vue({ el: '#app', router, store, i18n, components: { App }, template: '<App/>' })...

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

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1.4k views

1 answer

reactjs - React Three Fiber: Set Depth Write / Depth Test of of Drei Text

I'm using R3F with "Drei" and want to use the Text component. Unfortunately I need to set Depth Write and Depth Test to always have the text in ... read only property 'dispose' of object '#DerivedMaterial' Can someone help me please? Thanks...

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

0 votes

1.5k views

1 answer

json.net - Issue with serializing 'object' with System.Text.Json

I need to store an unknown JSON structure from an external API, but when I serialize the data using System.Text.Json, the JSON output is incorrect. A ... Microsoft article on migrating from Newtonsoft.Json, but I don't fully understand it....

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

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1.3k views

1 answer

c - Is there a more efficient way to reverse decimal numbers?

I am trying to reverse decimal numbers more efficient. #include <stdio.h> int main() { while(1) { int a,result; scanf("%d",&a); result=(a%10*10)+(a/10 ... am trying to find out how I can reverse more numbers in an efficient way ( less code)...

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

0 votes

1.2k views

1 answer

html - I create Fade in and Fade out effect using Css different ease but

I create Fade in and Fade out effect using different CSS ease using this site: https://developer.mozilla.org/en-US/docs/Web/CSS/animation-timing-function I use few ease ... in not out i want fade in and out in loop never stop it.</h1>...

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

0 votes

1.9k views

1 answer

How can I send a file using to a HTTP server and read it?

So, I created the following HTTP server tunneled via ngrok, and I am trying to send a file to the server, to then read it and display it on the web page of ... Could someone please help me fix this error ? I don't get where it comes from....

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

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1.6k views

1 answer

pivot - Create a SQL query that merges rows

I have a table that stores the dates when an order was opened and closed. It's similar to this: id orderID status date 1 1 opened 2020-01-01 2 1 closed 2020-01-05 3 2 opened 2020-01-02...