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I am having an odd issue. I am providing my codes but I believe the problem is in the wiring which I will explain ... might be missing here? Thanks PS, thats the setup: wiring pic...

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

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Java better way to delete file if exists

We need to call file.exists() before file.delete() before we can delete a file E.g. File file = ...; if (file. ... that we not need to copy our utils file in every other project....

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

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android - ViewPager2 "scrolling" from edges of the screen while left and right Views are visible

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

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vue两个项目合并怎么设置不同入口和打包路径

相当于有一个和src同级的目录 story 里面都有各自的main.js router 怎样通过不同命令启动不同项目而且根据不同命令分别打包src 和story...

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

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

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python - Django import Error(from extras.plugins import PluginConfig)

I'm new to Django and I try to develope a plugin for NextBox using this framework. To get familliar with it ... installing the package, .plugins is unkown as well as PluginConfig...

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

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dart实例初始化时如何在一些额外操作后初始化final成员？

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

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正则表达式验证体重支持小数点输入前三位小数点后两位（例：100.23）

正则表达式验证体重支持小数点输入前三位小数点后两位（例：100.23）...

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

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两个分支代码相差一年，git如何合并成最新代码？

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

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vue+ts+nodejs项目中如何连续请求不同的页面而不影响单个页面的加载？

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

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recursion - How to use return inside a recursive functions in php

Here is my question I am trying to create a random bar code for my application, I want to check if that code is ... I need to know what is wrong with the supplied code. Thanks...

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

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Vue中图片img加载问题

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

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vuecli4没有vue.config.js请问vue.config.js和babel.config.js作用一样吗？

我用vuecli4搭建的项目，没有vue.config.js请问vue.config.js和babel.config.js是一个东西吗？作用一样吗？...

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

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vite dynamic import 怎么配置

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

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java - Design pattern in a cocktail process

i have to find a design pattern in a statement. Here is the statement: " You are writing an application aiming at making ... adding an alcohol,adding a syrup..)" What do you think?...

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

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使用pandas读取excel出现xlrd.biffh.XLRDError是什么问题

xlsx格式的可以正常打开是哪里的问题，怎么解决？...

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

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Python 中 sendmsg iovec 结构构造

sendmsg 中定义如下： struct msghdr { void *msg_name; //Address to send to /receive from . socklen_t msg_namelen; //Length of addres data ... 构，如果 msg_iovlen >1, 如何构造msghdr，正确的将消息发送出去 ...

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

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请问Echarts中如何使用贝塞尔曲线接口?

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

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javascript - Using nodemailer in a React app Post 404 Error

I've followed the tutorials I could find online, but I still receiving an error. I have a contact form in my React app ... error I am getting is this: What is wrong in my setup?...

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

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python - How to split a string using a dynamic lenght?

df = {'Goals': {0: '0,0,0,0', 1: '0,0', 2: '0,0,0,0,0,0', 3: '0,0', 4: '0,0'}, ' ... when I used pandas inside of the str function the code does not returns the result that I want....

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

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数据库定时查询大量数据

问题描述有一个场景，需要定时查询数据库库中所有会员的订单信息，假设量很大，每半个小时查询一次，此时单节点直接查询肯定搞不懂，如何在多节点的情况下实现暂时不考虑数据库设计，重点在于多节点之间的负载平衡以及单个节点内，半个小时内的 ... .直接把订单数据都存在EL里，减少对数据库的压力疑问一般像量比较大的电商项目都采取哪种方式来实现？比较稳固可靠？...

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

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python - Django table rendering blank rows

I've searched far and wide, and haven't come up with a solution despite this probably being a simple fix. Models.py: ... just outputs blank rows in the table. What am I missing?...

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

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4.3k views

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dialogflow es - SLA for Actions Builder

Do you know any information regarding SLA for Actions Builder? As far as I know, the only services that provides ... Builder or another NLU services for Google Assistant? Best!...

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

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css - Does the background size apply to both images?

I have a responsive landing page with two background images. I need both images to have a background-size of 40% but I ... notice, the 40% is only being applied to the first image:...

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

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lodash.isArrayLike

为什么不考虑undefined的情况呢...

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

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vue.js - Unexpected uncaught exception with Vuex action and Composition API

In the context of Vuex with the composition API for Vue2, I am trying to understand the difference between: // ... this exception is not caught by my component catch() method?...

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

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python - How could I plot the difference of proportion of one dataframe against an other one?

I'm doing a Kaggle project and I'm trying to compare the difference of degree between Data Analyst and Data Scientist. I ... ) plt.legend(loc='upper right') plt.show() My plot...

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

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