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v-for=“item in items”，把是双数的index的item剔除，不参与遍历

v-for=“item in items”，把是双数的index的item剔除，不参与遍历。。。。是用过滤器。。还是自定指令...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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222 views

1 answer

Custom shell in C: redirection I/O

I am currently trying to create my own (simple) shell - in C language - but I have a hard time with redirection ... question,but they made me more confused. Thank you in advance ....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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256 views

1 answer

javascript - Stripe Unexpected token < in JSON at position 0

I am getting this error, it points to client.js line 21. It is the second .then ... -91e7-10092d15ec8824d547&sid=3aa75c2f-71f2-493c-ae1b-8f76050ebb800df509&version=6&preview=false...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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481 views

1 answer

关于span元素里面是非文字时，在ie和chrome两种内核下，宽度显示的问题

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <style type="text/css"> span{ border: 1px solid ... 就会有区别，这该怎么解决 chrome内核下的显示效果 ie内核下的显示效果...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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206 views

1 answer

node.js - Stub not working when writing unit test in Node using Express

Alright, so I have a very simple API that basically returns information on currencies. I am trying to use the clean code ... anyone know how to make this work? Thank you so much...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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426 views

1 answer

Vue子组件如何使用v-bind绑定data数据?

<div id="app13"> <my-input v-bind:value="say"></my-input> </div> <script> var app13 = new Vue({ el: "#app13", components: { "my-input": { ... 始化过来的，但是随后的修改我希望只在子组件内有效，不影响父组件，该如何做?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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254 views

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c - Access for-loop index variable from attached for-loop

I have this code: for (int i = 0; i < var; i++) for (int j = 0; j < var2; j++) // something which using j variable Can I use i variable from first loop instead var2 variable?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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486 views

1 answer

dom动画卡顿优化方案？

如图，使用react编写的一个抽奖转盘组件，由于要做可配置，转盘上面的奖品项都是dom结构实现的（没做雪碧图），不是一张背景图。使用requestAnimationFrame实现转盘动画。但是，在iphone6上跑起来出现很明显的卡顿，目测是dom结构太多引起的。有没有什么优化方案呢？目前我只能想到canvas......

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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230 views

1 answer

python 3.x - Django Reverse Error upon attempting to delete account

I am unsure of what went wrong but I cannot delete my own account. I receive the following error: Reverse for 'delete_account' ... tried: ['account/delete/(?P<username>[^/]+)$']...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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719 views

1 answer

express中用ajax给session赋值，页面跳转后session丢失

有没有人遇到了相同的问题...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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441 views

1 answer

php - Laravel 8 CRUD: "POST" Method not Working Despite Proper Routing and HTML Configuration

When I submit my user form, nothing happens: I don't understand why nothing is happening. If I change the "POST" method to "PUT", ... btn btn-primary"> </td> </tr> </table> </form>...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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532 views

1 answer

sublime已经设置了默认默认line endings是unix，但是用右键菜单打开文件还是windows

...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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487 views

1 answer

linux - Will libraries loaded with LD_PRELOAD be unload in the last

I am writing a memory leak tracker, and want to print the statistics messages in the tracked program at the time the ... be unload in the last (Later than the hacked programs)?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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195 views

1 answer

Heroku本地测试与线上测试效果不同

用express框架搭建博客，想要支持代码高亮功能，于是引入highlight.js模块，本地测试的时候代码可以正常渲染，包括使用heroku local也可以，但是push到服务器上不能正常显示引入的 ... "heroku": "NODE_ENV=production node --harmony index" }, 本地显示效果：线上显示效果：...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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217 views

1 answer

c++ - Polymorphism for a class with no virtual functions?

I'm building a parsing tree which works quite simply: there's a base class for Node and the derived ... Or is my approach towards designing this structure completely wrong?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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179 views

1 answer

如何设计带时间限制的激活码?

我做了个软件,想用激活码方式授权,有些只想授权1个星期,光是授权的话,用MD5做加密的,但是怎么让激活码带着授权时间让程序识别呢? 请教大神们...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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216 views

1 answer

How to assign colour to a value in static text box in GUI MATLAB

A good day everyone, I'd like to get some ideas on how to assign colour for a specific value on my static text box for GUI. ... num2str(d/t) 'km/h']; set(handles.Speed,'String',a);...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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421 views

1 answer

controller - TabBarView not showing screens Flutter

i am trying to implement TabBarView in my app . i have filter in my app and have placed tababr below that filter and want to place ... Icons.home) ], ), ), ), ); } Thank You ....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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232 views

1 answer

python - does pyinstaller support zeep?

My environment: python 3.8, zeep 4.0, pyinstaller 4.1 When i used pyinstaller to transfer name.exe, it's ... protocolSide': ''}) print(partition_resp) except: print('no')...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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380 views

1 answer

html - how to insert a picture using clear javascript?

Schematically what I want. How to do it? <img src=incamingMessage> <script> var socket = new WebSocket("ws://localhost: ... added listener. i dont know how to change arg in img...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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460 views

1 answer

为一个支持GPRS的硬件设备搭建一台高并发服务器用什么开发比较容易？

高并发服务器开发，硬件socket发送数据至服务器，服务器对数据进行判断，需要实现心跳以保持长连接。同时还要接收另外一台服务器的消支付成功消息，接收到消息后控制硬件执行操作。查了一些资料，java的netty，go，或者是用C/C++不知道该用哪个，想问一下哪个比较适合，学习更容易一些。...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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421 views

1 answer

vue-resource 前端的数据是Array，后端获取变成了Object？

各位大哥好，我刚接触vue，遇到了个比较奇怪的问题这是我前端在vue文件里写的代码在post传之前我把数据打印出来了：是个数组但是在后台nodejs中获取到的就变成了Object，，，这是我nodejs端的代码通过webstorm的 ... 在我是改成webpack了，但是该引用的我应该都引用了呀，不然都传不到后台去吧小弟这里先谢过 ...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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304 views

1 answer

javascript - How can i parse url from iframe html code?

I have a vimeo iframe code in db. <iframe src="https://player.vimeo.com/video/33535353" width="650" height=" ... iframe code. Expected result: https://vimeo.com/33535353 Thanks....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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465 views

1 answer

Vue transition js钩子设置过渡动画动画执行时间在哪写

用Vue transition钩子写一个过渡动画，执行的时候直接到了最后状态。 transition js钩子的写法动画执行时间怎么设置...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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449 views

1 answer

python中用正则表达式去掉字符串中的冒号

初学python，最近尝试爬数据，json字符串的value中有冒号，需要去掉我的代码如下 a和b都是value中会有冒号的字符串 import re a = "Title:'Intern: Customer Experience + ... 要的效果是只删intern之后的那个冒号（title后的冒号要保留）请问大家该如何修改？...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

303 views

1 answer

Oracle 12c - SQL Compare multiple rows based on master and detail record

I am working on migration process of legacy to a new one. My legacy table example Legacy table contains both master ... compare DESC, CODE, CODE DESC, INDICATOR Thanks in advance...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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209 views

1 answer

eclipse如何删除working set工作集呢？

我在eclipse中创建了几个测试的工作集，但要怎么删除呢？如上图所示，右键选了也没有删除的选项！...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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229 views

1 answer

asp.net mvc - RedirectToAction is returning HTML Content

In ASP.NET MVC, I am trying to implement user authentication. Credentials are stored in SQL table. I have a login page, ... (Exception ex) { } return RedirectToAction("Login"); } }...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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