fallible point in
How to Control an External USB Web Camera Using a Raspberry Pi All In One
How to Control an External USB Web Camera Using a Raspberry Pi All In One
如何使用树莓派控制外接 USB 网络摄像头
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ARM Cortex-A72 CPU All In One
ARM Cortex-A72 CPU All In One
Raspberry Pi 4B, 4 核心 1.5GHz 64 位 CPU
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Vue computed出现Error in render: "TypeError: XXX is not a function"问题
原来： computed:{ currentTimeA: function() { return Date.now(); } } <div>{{currentTimeA()}}</div> 在运行的时候出现vue.js:634 [Vue warn]: Error in render: "TypeEr ......
【Shell】Display the ddl for all users in Oracle DB with bash script
脚本说明： 1、普遍用于 使用expdp/impdp 数据泵进行的数据(全库或者特定schemas)迁移 2、适用于无PDB的Oracle环境 3、适用于RAC,SI,ADG 以及多实例的环境 使用方法： 创建脚本为 display_all_users_ddl.sh 然后将正文内容贴入 并保存，然后 ......
webpack报错处理:The extension in the request is mandatory for it to be fully specified.
完整的报错提示如下: BREAKING CHANGE: The request './module2' failed to resolve only because it was resolved as fully specified(probably because the origin is s ......
python flask 启动报错 'utf-8' codec can't decode byte 0xb2 in position 4: invalid start byte
原因：在python下lib文件夹里的socket.py文件中的name=gethostname()代码执行获取本机电脑名称时，遇到中文导致乱码报错。 解决方法： 1.将电脑“设备名称”中中文改为英文； 2.修改socket.py代码，如下（参考 https://blog.csdn.net/weix ......
Exploring the Role of Preclinical Toxicology Tests in Vaccine Development
The difficulty of drug safety evaluation in vaccines is that the vaccine does not directly exert preventive or therapeutic effects but acts by inducin... ......
Linux shutdown & reboot & poweroff All In One
Linux shutdown & reboot & poweroff All In One
Raspberry Pi
$ sudo shutdown -r now
$ sudo reboot
$ sudo poweroff ......
软路由 & 旁路由 All In One
# 软路由 & 旁路由 All In One > 路由器`KeXue上网`  ## 软路由 ## 旁路由 ## ......
P8943 Deception Point 题解
## Description 题目给的很详细了。 ## Solution 首先 $n$ 个点 $n$ 条边，我们很容易就想到基环树(比正常的树多了一条边，形成了一个环)，不会也没关系，这题跟基环树其实关系不大。 首先，我们可以发现题目中说明了这个环不是一个四元及以下的环，这代表着如果 $A$ 提前进 ......
What is doing __str__ function in Django?
def str(self): is a python method which is called when we use print/str to convert object into a string. It is predefined , however can be customised. ......
value too long for type character(8) Call getNextException to see other errors in the batch.
 **字段内容超过数据库字段设置的长度导致的插入错误的提示信息** 如何定位是哪个字段长度不够长？ mysql的话 ......
碎片化学习前端之JavaScript（for...in 和 Object.keys() 的区别）
## 前言 JavaScript 中遍历对象的方式主要有：`for...in` 和 `Object.keys()` 两种方式。 ## for...in ```js let obj = { name: 'ming', age: 18, } obj[Symbol('hello')] = 'world' ......
How to change the default Python2 to Python3 on Linux All In One
How to change the default Python2 to Python3 on Linux All In One
在 Linux 中如何把默认的 Python2 更改为 Python3
.bashrc / .zshrc alias
symbolic link 符号链接
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the way to make jupyter output cell has a dark background in vscode
# the issue to be fixed As shown in the picture, jupyter output cell has a bright background, even it's ask to use dark background.  **发表时间：**2021(NeurIPS 2021) **文章要点：**这篇文章提出一个tandem learni ......
Incorrect table definition； there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT
Incorrect table definition； there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT ......
【CPP0049】以Point类及平面基类Plane类为基础设计圆类Circle并实现相关文件操作
基于Point类及平面基类Plane类，设计圆类Circle，并为Point类和Circle重载实现<<和>>运算符，main(void)函数实现Point对象和Circle对象的文件读写操作。@ Point类结构说明： Point类的数据成员包括： ①私有数据成员：X坐标x(double型)，Y坐 ......
Linux shell command strings All In One
Linux shell command strings All In One
打印文件(默认为标准输入) 中可打印的字符串
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使用 CloudFlare Argo Tunnel 实现内网穿透 All In One
# 使用 CloudFlare Argo Tunnel 实现内网穿透 All In One ## demos --> ## (🐞 反爬虫测试！打击盗版⚠️）如果你看到这个信息, 说明这是一篇剽窃的文章，请访问 https://www.cnblogs.com/xgqfrms/ 查看原创文章！ ## ......
Raspberry Pi 4 Model B Product Information Portal All In One
Raspberry Pi 4 Model B Product Information Portal All In One
PCN
Product Information Portal / 产品信息门户
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How to enable Vsync with Software Rendering in SDL [SOLVED]. 如何在SDL2下实现垂直同步
How to enable Vsync with Software Rendering in SDL [SOLVED]. Hi, I just figured out the dirty way to enable vsync with software rendering on SDL. This ......
three points 1(牛客多校) (计算几何, 三角形)
题意: t组样例，每组样例输入w， h， a， b， c.在坐标系中，0 <= x <= w, 0<=y<=h， 求出三个点X， Y， Z， 并且|XY| = a， |XZ| = b， |YZ| = c，求这三点坐标并依次输出 题解: 一个三角形在矩形中是合法的,那么就一定可以平移到矩阵的某个角, ......
k8s pod之间DNS解析问题:Temporary failure in name resolution
1.ubuntu 系统重启， k8s 网关需要 # 允许所有数据包通过 iptables -P FORWARD ACCEPT 2.查看coredns是否正常 kubectl get po -n kube-system | grep coredns kubectl get service -n kub ......
Creating C# add-in for SOLIDWORKS automation using API
文摘：https://www.codestack.net/solidworks-api/getting-started/add-ins/csharp/ - Create new project in Microsoft Visual Studio - Select *Class Library(.n ......
Error: Main method not found in class
###执行java报错,没有发现主方法###[root@localhost qf]# java QfError: Main method not found in class Qf, please define the main method as: public static void main( ......
parallelizing jobs in python
``` import time from concurrent.futures import ThreadPoolExecutor, wait import numpy as np def work(aa, bb): time.sleep(np.random.rand()) print(f"work ......
use SSH to connect to Raspberry Pi methods All In One
# use SSH to connect to Raspberry Pi methods All In One > `Raspberry Pi` ## user@hostname ```sh # 无需知道 Raspberry Pi 的 IP Address， 即可使用 SSH 连接 👍 $ ssh ......