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255 views

1 answer

python 3.x - rust linking fails with aarch64-linux-android-clang, cannot find -lpython3.6m

So, to give a bit of context: I want to use a foreign (rust) library with python Kivy application for experimental ... to achieve my goal better way please mention it as well....

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

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226 views

1 answer

vue源码中nextTick实现的一个小问题求解

如图： vue版本：v2.6.11 图中nextTick函数是存在于源码目录src/core/util/next-tick.js中我不明白的点是如我圈出的这个: 如果push了一个回调函数进去callbacks数组里，然后立马设置pending为 ... 那就是说callbacks只能有一个回调函数？？?不应该啊，我知道肯定是我理解错了，望各位大神解答...

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

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117 views

1 answer

mongoose非主键绑定主键（表的设计）

最近在学node+数据库的一点东西，准备用express+mongodb为我的博客鲁几个简单的api 写博客评论api的时候，我设计的comment表是这样: let commentSchema = new Schema({ article_id: { type: ... 值设置为null.这里我有点困惑了，不知该如何设计，恳请同行们给点建议，谢谢~~~...

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

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981 views

1 answer

基于Chromium的edge全屏模式下100vh会出现滚动条，但chrome不会，请问有人知道为什么不？

基于Chromium的edge全屏模式下100vh会出现滚动条，但chrome不会，请问有人知道为什么不？ body的margin padding 已经置0 也没有使用margin-top 非全屏不会出现滚动条这个有人清楚为啥不？？...

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

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369 views

1 answer

canvas绘图，绘制完成后图消失了，canvas节点还在是什么原因

使用echarts绘制一个图表啥的，现在绘制完成后，图马上消失了不知道是什么原因，dom中的canvas节点还在另外，把echarts的渲染器换成svg没问题 var chart = echarts.init( ... 30, 60], name: '应用数', type: 'line' }] } chart.setOption(option1)...

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

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349 views

1 answer

react-native 如何原生封装react-native的imageview组件？

https://reactnative.cn/docs/n... 我想在imageview的基础上加点原生的功能，作为新手不知道怎么写，请问有例子吗？...

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

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173 views

1 answer

c - Condition in 2D array is it true

Write on C You are located in front of a stone wall with steps (two dimesional array) and each step has its own value- random integer ... } x++; } printf("You won "); return 0; }...

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

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158 views

1 answer

python - Divide the text by 2 characters

I have a pytohn script which counts how many times a character is met in the text file. from __future__ import unicode_literals import ... times ll - 2 times wo - 1 time and so on...

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

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240 views

1 answer

为什么console.log(a[6])结果是f(){console.log(i)}

为什么console.log(a[6])结果是f(){console.log(i)} ，而不是f(){console.log(6)} var a = []; for (var i = 0; i < 10; i++) { a ... } a[6](); //10 console.log(a[6]); // function(){console.log(i)}...

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

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475 views

1 answer

如何混淆vue代码

如图，用vue-cli3打包之后方法名依旧没有混淆，有什么方法可以混淆这些方法名吗？...

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

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157 views

1 answer

Forge中复制模型的某一构件

Forge中可以对构件进行缩放、位移，但能否重复显示某一构件呢？就比如模型中有一个树干和一片叶子，再复制许多片叶子。...

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

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377 views

1 answer

vue 路由文件的写法能更简洁吗？

如下图，看见好多项目的路由配置文件都是如下样子， path 和 name 和 component 同样的名字。那能简化一下吗?...

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

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243 views

1 answer

python 0 assigner returns none despite the value

I have a problem in python(python 3.9 on VS Code). I'm trying to change a value in a dictionary by some conditions: ... 0. But anyway, it changes it to none. What's the problem?...

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

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381 views

1 answer

google colaboratory - How do we find any paths of specific libraries/tools that are present in collab Notebook?Are there any commands to find?

While executing the command make,I encountered this problem ` /usr/local/cuda-10.0/bin/nvcc -ccbin aarch64-linux-gnu-g++ -I. - ... 'nb_gpu.o' failed make: *** [nb_gpu.o] Error 1 `...

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

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302 views

1 answer

python - NativeScript MicroPython webserver interaction

For a project I'm working on, I've set up a microPython webserver on a Wemos d1 mini, with esp8266 chipset. The webserver takes GET ... ("getStringResult", r); }, (e) => { }); }...

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

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376 views

1 answer

nodemcu - Arduino: change servo motor speed

I'm controlling servo motor position with Blynk slider over PCA9685 and ESP8266 (NodeMCU). I want my servo runs slower than at default ... , 128, 550); pwm.setPWM(1, 0, slider1); }...

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

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231 views

1 answer

javascript - Arkanoid Mobile - Device orientation control - paddle leaving canvas

I have an Arkanoid game written in javascript canvas, I am trying to steer by device orientation. It works, but I want to avoid the ... && paddleX > 0) { paddleX += x*0.35; } }...

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

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185 views

1 answer

php - Squares apperaing in text, want to search & replace

I have a site where a client has inserted text. Probably by copying it from a PDF or Word document. There is a ... The square in first argument seems to be removed when i save)...

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

0 votes

398 views

1 answer

如何通过php模拟登录到系统中读取写入信息？

一个需要账号密码登录验证的办公系统，现在我想用php写一个模拟登录程序。登录进去后查询我想要的信息，并可以通过这套办公系统原有的表单向里面提交写入数据！给点实际的解题思路，curl？...

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

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173 views

1 answer

How to remove object in deep nested array ? Javascript

dasjnkdsajnnjdajnkskdsanjnkjadnksjnjkdaksnnkanjknjkasndnsjasnkjnjkndsnkdasadknsj { "name":"Pacinciriaidisiasi 55", " ... dasdajnsdknajsdasdas dsadasdsadas dasdajnsdknajsdasdas d...

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

0 votes

824 views

1 answer

react纯函数组件，父组件异步获取数据传递给子组件的问题（子组件拿到的数据是空）

纯函数组件没有生命周期父组件 import React, { useState, useEffect } from 'react'; import { Button, message } from 'antd'; import List from ' ... {item} /> ); return ( <ul> {listItems} </ul> ); }...

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

0 votes

761 views

1 answer

pagespeed - Struggling to get CLS down under 0.1s on mobile. Can't reproduce it on tests

I try to optimize the whole Pagespeed of this page but I can't get the CLS under 0.1 on mobile. I really don't ... / In no Scenario I get somewhere near the 0.1 in CLS....

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

0 votes

496 views

1 answer

请教高手们一个图片加载的问题

请问高手们，在微信小程序中，我们的首页是一张160k的背景图，我想用户一进页面，这张背景图立刻就加载完毕，呈现出来，用户不会看到图片慢慢加载出来，请问能实现吗，看到app进入首页，图片是可以立马加载出来，谢谢了？...

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

0 votes

616 views

1 answer

DolphinDB在执行删除某个数据库下的某个数据表时报错

我想删除已经创建在数据库（"dfs://CBP_ALARM"）下的一个表，表的名称为："CBP_ALARM202010",执行代码如下： db = database("dfs://CBP_ALARM") dropTable(ab,"CBP_ALARM202010") 返回如下错误：请问哪里出错了？...

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

0 votes

637 views

1 answer

前端页面交互求指导

到了一个新公司只有产品没有UI 只要求功能不追求页面美观，我感觉自己审美很差，拿着element的组件直接写页面。整体上看颜色搭配还有交互性自己都不满意。想自学一些前端的有关交互，色彩搭配这类的知识。有大佬推荐书么，感觉自己基础不是很扎实CSS也有待加强。...

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

0 votes

470 views

1 answer

怎样在Windows创建MongoDB复制集？

怎样在Windows创建MongoDB复制集...

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

0 votes

572 views

1 answer

java如何实现文件流byte[]转码为UTF-8格式的文件流byte[]?

刚刚学习java文件流的输入输出，请教各位大神，已知输入文件流byte[]的编码，实现将其转码为UTF-8编码并输出为文件流[]. public static byte[] filebyteToUTF8(byte[] inputFilebyte){ }...

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

0 votes

554 views

1 answer

请问一下有没有C++ API的IO错误代码手册

我在用DolphinDB C++ API时运行conn.run时出现了如下图所示的错误：Failed to read message from the sokcket with IO error type 13。请问这type 13表示什么意思？...

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

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