Recent questions in Technique[技术]

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node.js - How can I serve a static file using Koa?

I want to implement universal links in my project and I need to serve a json via Koa, which is a static file named apple- ... way. What can I do? Thank you very much in advance....

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

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python 3.x - Why I can not extract data from this dictionary though a loop?

I'm extracting from data which is of type dictionary. import urllib3 import json http = urllib3.PoolManager() url = ... ] without error. Could you please elaborate on this issue?...

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

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image - ValueError: Input 0 of layer sequential is incompatible with the layer

I am trying to run this model but I keep getting this error. There is some mistake with regard to the shape of ... about this issue, but still didn't understand it very well....

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

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java 爬虫报错，网站meta不匹配如何解析?

Document document; ReponseBody =mingspider.getrequestdata("https://gongshang.mingluji.com/beijing/diqu/%E4%B8%9C%E5%9F%8E"); System.out. ... :278) at main.Main.main(Main.java:24)...

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

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echarts graph关系图(可拖拽的)连接线如何添加迁徙动画效果？

想要实现的效果：用echarts 鼠标滑入时连接线添加迁徙动画节点是可拖拽的 https://gallery.echartsjs.com... 有连接线迁徙动画但是没法拖拽 https://gallery.echartsjs.com... 可拖拽但是没有连接线动画我怎样才可以结合到一起呢？求大佬解答...

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

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怎样在dataframe中添加一列，使其值等于所在行的index值的两倍?

有一个df,想增加一列df['new']=df.index值*2 请问如何写代码，谢谢用map和list也可以 import pandas as pd df=pd.DataFrame(["a","b","c ... ("income"+str(income)) df["page"]=list(map(foo,df.index)) print(df)...

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

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Add dicts with identical keys to list without overwriting values in Python

I have the following problem: In a loop over a input parameter list I make an API call for each list entry. I want to ... 'foobar', 'qty': '10'}] Your help is much appreciated....

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

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gitlab - Can't get analises report on Sonar Cloud

I use Sonar Cloud to analyze my code with Gitlab CI. How it is usually in the SONAR_HOST_URL I put https://sonarcloud. ... /cache script: - sonar-scanner only: - master - IDEA-022...

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

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2.4k views

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

I am implementing ViewPager2 with displaying left and right Views on screen edges (which I did) and resizing them while scrolling ( ... I don't know how to do this for my case....

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

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python - Print the minimum number of moves required such that all the elements are equal to minimum element

In one move we can make it equal to the 2nd maximum element and have to make all elements equal to the minimum element. My code ... 5 4 5 5 2 4 6 Here minimum moves required is 6...

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

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2.6k views

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请教 Java 的 Quasar 库的 Fiber 性能问题及使用姿势

今天试了下 java 的 fiber 库 quasar，有些疑问测试方法是扫描本地端口 8000~9000 查看端口是否 socket 监听，本地启动了一个 8080 的服务比较不同方式扫描一遍1000个端口耗时 quasar 的耗时 ... 改造的有过 quasar fiber 的使用经验么可以解释下我这个结论是正确的还是我操作方法有啥问题...

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

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2.6k views

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Python 3 : Two or more tuples as arguments

Is it possible to unpack two tuples as an argument of a function in Python 3? The code goes like this... def ... code to compare elements of tuple1 to elements of tuple2 Thanks!...

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

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3.1k views

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vue中怎么通过cdn的方式使用less

externals: { 'less':'less' } webpack 中配置了这个，报错 Cannot find module 'less'...

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

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3.7k views

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java 代码优化

问题描述代码里面出现了太多的if条件怎么优化相关代码 if (workPerson.contains("A")){ a ++; } if (workPerson.contains("B")){ b ++; } if ( ... if (workPerson.contains("F")){ f ++; } 不想有这么多if判断该怎么优化呢？...

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

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2.9k views

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three 整个场景可以深度拷贝吗

使用场景：场景默认有个网格，坐标线，环境光每次加载一个不同的场景，需要去清除场景中里面的scene.children对象（非网格，坐标线，环境光），如果不是深拷贝，每次 ... obj.name ==='axisHelper'|| obj.name ==='ambientLight') return this.removeObject(obj) })...

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

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3.2k views

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c - Infinite loop in program written as an exercise about finding the value of Pi

I have this assignment The value of Pi can be determined by the following product 2 * 2 4 * 4 6 * 6 N * N Pi = ... is stuck and doesn't give any value when I launch it. Why?...

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

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3.7k views

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javascript - Reversing an array stored in State doesnt force re-render of component in React

This is part of a larger component but I've summarised it in a reproducible example below: ? ? import React, {useState} ... ://codesandbox.io/s/immutable-sun-oujqj?file=/src/App.js...

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

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3.4k views

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帮忙看下van-list组件，下拉加载数据的问题

使用vue脚手架新建了一个练手项目，使用vant中van-list组件做一个数据列表的功能，下拉加载更多数据遇到一个问题就是：下面的代码会一次性将所有的数据加载进去，而不是下拉后再加载更多数 ... false; } } }).catch(function(error) { console.log(error); }); } }, } </script>...

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

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3.7k views

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Elasticsearch query issue on date-time ranges in a nested object

Hi I am using spring data Elasticsearch to form a query and have the following data indexed in my elastic search Indexed Data [ { " ... "version": { "created": "7100199" } } } } }...

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

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3.5k views

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Nginx代理转发，域名

意图是，在nginx上配个location/attendance，所有请求这台nginx的/attendance路由转发到https://example.me.com // nginx.conf // upstream upstream attendance ... } } 报404 not found 怎么trouble shoot，怎么改，有人指点下吗...

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

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3.4k views

1 answer

mac os docker build dockerfile volume 目录创建失败?

FROM ubuntu:16.04 VOLUME ["/root/share1","/root/share2"] docker build -f ./dockerfile -t ubuntu-volume-test:16.04 . docker ... "Entrypoint": null, "OnBuild": null, "Labels": {} },...

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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swiftui - .enumerated() method not working on array

I am passing data to a ForEach and had no problems until I used the .enumerated() method. I got the error that ... { static var previews: some View { ContentView() } }...

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

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3.7k views

1 answer

serviceconnection - Power Platform DevOps Tools new environment creation task

I am trying to setup Azure DevOps pipeline for Power Platform environment creation. I have created the App Registration in Azure ... I am really not sure what I might be missing....

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

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3.5k views

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关于使用第三方地址问题

近期项目中有考虑使用高德的省市区的接口，但抛出的疑问是当第三方省市区的ID变化，例如区域合并...自身库中已存在的数据是否会有影响，有没有对接过这方面的大佬详解一下？...

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

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3.6k views

1 answer

请问一下，移动端页面加载问题

列表图片比较多，内容都得请求接口加载的比较慢。怎么优化呢，vue做的项目，是在页面加载之前放个整页loading吗，应该放到生命周期里面还是数据请求结束后...

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

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4.0k views

1 answer

How can I add more trees to a random forest in R

Is there a canonical way to iteratively add trees to a random forest? Let's say I am using the caret package and I ... to continue adding trees to it, how would I go about that?...

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

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3.8k views

1 answer

javascript正则表达式校验

之前看资料说 1.对于表达式对象的exec方法，不加入g，则只返回第一个匹配，无论执行多少次均是如此，如果加入g，则第一次执行也返回第一个匹配，再执行返回第二个匹配，依次类推 2.对于表达式对象的test方法，加入g与不加上g没有什么区别 // ... 但是今天实际执行过程中发现是有问题的?...

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

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3.1k views

1 answer

java - JavaAssist Cannot Compile Exception when calling a method with Varargs

I am trying to call java.util.Arrays.asList(..) through javassist. But getting the below exception. javassist. ... javassist recognize that the method with varargs is being called....

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

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