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ESP3D ESP32-C3 bulid时报错 'Serial2' was not declared in this scope

ESP3D 版本: 3.0.0-alpha3 错误原因: ESP32-C3只有两个port 解决方法一: github上最新的git已经解决了该问题,使用git获取最新版,不要下载Release的 解决方法二: 去掉Serial2 serial_sevice.cpp中, 第40,41行 将MAX_S ......
ESP declared 时报 Serial2 Serial

Raspberry Pi Code Editor All In One

Raspberry Pi Code Editor All In One GPIO module bug ......
Raspberry Editor Code All One

Thonny IDE All In One

Thonny IDE All In One Thonny 开启代码自动完成 Python vscode IntelliSense 代码提示 代码自动补全 ......
Thonny IDE All One In

淘宝上如何查看很久以前的历史订单的购买记录 All In One

淘宝上如何查看很久以前的历史订单的购买记录 All In One 历史订单的购买记录,历史订单最久保留时间 搜索 全部功能>我的购物车>已买到的宝贝 > 所有订单 >订单搜索 ......
订单 历史 All One In

macOS Finder move & cut & copy & paste file All In One

macOS Finder move & cut & copy & paste file All In One 快捷键 Mac 键盘快捷键 剪切、拷贝、粘贴和其他常用快捷键 Command-X:剪切所选项并拷贝到剪贴板。 Command-C:将所选项拷贝到剪贴板。这同样适用于“访达”中的文件。 Com... ......
amp Finder macOS paste copy

2023-04-14 Fatal error: Call to a member function fetch_assoc() on a non-object in C:\wamp\www\work\user.php on line 860

问题:php报错。 业务场景:使用update语句去更新数据库字段。 原因:update接收值不正确。 原代码: $query = "UPDATE student SET date = now() WHERE id = $id"; $result = $mysqli->query($query2) ......

Moves, copies and clones in Rust

原文链接:Moves, copies and clones in Rust 简介(Introduction) move 和 copy 是 Rust 中的基础概念。这对于来自 Ruby、Python 或 C#等垃圾回收语言的程序员来说可能是完全陌生的。这些术语在 C++中也确实存在,但它们在 Rust ......
copies clones Moves Rust and

How to use command line find all users on Linux All In One

How to use command line find all users on Linux All In One Linux 系统中一切皆文件, 就像 js 中一切皆对象一样 /etc/passwd ......
command Linux users line find

main.c: In function ‘main’: main.c:7:14: warning: implicit declaration of function ‘factorial’ [-Wim

先写了主函数(主函数位置在最前),然后在主函数里调用了其他函数,但是这样调用的话先运行的是主函数,当主函数结束时,还没运行到调用函数,所以才会报错。 解决:main函数在最后(推荐);使用函数声明; #include <stdio.h> int main() { long factorial(int ......
main function declaration factorial implicit

PAT 甲级 1014 Waiting in Line(30)

Suppose a bank has N windows open for service. There is a yellow line in front of the windows which devides the waiting area into two parts. The rules ......
甲级 Waiting 1014 Line PAT

R语言:Some 'from' names in value not found on 'x' 报错

升级了dplyr后运行命令inter=inter %>% rename("gene"="V4") 就一直报错:Some 'from' names in value not found on 'x',如下所示: Error in rename(., gene = "V4") : Some 'from' ......
39 语言 found names value

how to create one command line configuration tool with shell language on Linux All In One

how to create one command line configuration tool with shell language on Linux All In One 如何在 Linux 上用 shell 语言创建一个命令行配置工具 raspi-config ......
configuration language command create Linux

Shortest Cycle in a Graph

Shortest Cycle in a Graph There is a bi-directional graph with n vertices, where each vertex is labeled from 0 to n - 1. The edges in the graph are re ......
Shortest Cycle Graph in

2023-04-14 uni-popup 报错:Error in config.errorHandler: "RangeError: Maximum call stack size exceeded"

问题描述:首次导入uniapp的uni-popup,在项目中使用时报错,业务场景为:页面渲染完成后显示弹窗。 报错:Error in config.errorHandler: "RangeError: Maximum call stack size exceeded" config.errorHan ......

Linux input and ouput command < symbol & > symbol All In One

Linux input and ouput command < symbol & > symbol All In One left input / right output < 向左侧输入 > 向右侧输出 pbcopy pbpaste 剪切板 ......
symbol command Linux input ouput

Oracle OEM中EMGC_OMS1指标警报The heap usage使用率过高

Oracle OEM中EMGC_OMS1指标警报The heap usage使用率过高 OEM报警EMGC_OMS1目标堆内存占用率过高。 我的环境OEM版本是13.3。 默认监控目标EMGC_OMS1的最大内存使用是1740M,当前的最大堆内存值对于实际的 OMS 负载来说太低了。 由于已经定期生 ......
使用率 警报 EMGC_OMS 指标 Oracle

在终端命令行中把输出复制到剪贴板的命令 All In One

在终端命令行中把输出复制到剪贴板的命令 All In One use command copy from the Terminal Linux 系统 Debian / Ubuntu / Raspberry Pi OS # Raspberry Pi $ grep shutdown | ??? http ......
命令 剪贴板 终端 All One

Salt formation: an effective means to improve the physical and chemical properties of drug molecules and enhance the druggability of drugs

Salt formation is one of the effective means to improve the physicochemical properties of drug molecules and enhance drug-forming properties. ......

Introducing QCN9274: The Next Generation of Wi-Fi 7 Wireless Networking

Are you tired of slow internet speeds and dropped connections? Want to upgrade your wireless network to the latest and greatest technology? Look no fu ......

Linux中使用ntpdate同步失败报错:14 Apr 08:42:12 ntpdate[1255]: the NTP socket is in use, exiting:解决方法.

报错信息: 报错原因: 1、可能是因为同步的域名信息没有解析到。 2、可能是因为服务的问题导致没有同步成功。 解决方法: 1、先关闭ntpd服务。 [root@k8s-master01 ~]# service ntpd stop Redirecting to /bin/systemctl stop ......
ntpdate exiting 方法 socket Linux

创客开发工具 LED 显示屏 All In One

创客开发工具 LED 显示屏 All In One OLED 显示屏 SSD1306 S2812B RGB LED 显示屏 ......
开发工具 显示屏 工具 LED All

Disqus Site Reactions All In One

Disqus Site Reactions All In One ......
Reactions Disqus Site All One

Linux copy from pipe command All In One

Linux copy from pipe command All In One shutdown # Linux 关机 $ shutdown --help $ man shutdown Raspberry Pi # Raspberry Pi ??? $ man shutdown | ??? macO ......
command Linux copy from pipe

JSON Web Tokens (JWT) — the only explanation you will ever need

本文摘抄自 Ariel Weinberger 博客 JSON Web Tokens (JWT) — the only explanation you will ever need | by Ariel Weinberger | Medium JSON Web Tokens (JWT) — the o ......
explanation Tokens JSON only ever

OkHttp Address already in use: no further information异常

说下场景,我的程序在多线程场景下一个循环体中处理业务数据,其中需要调用一个外部http接口去获取一些数据,程序总会在在本地执行一段时间后会抛出Address already in use: no further information错误。 这是大量并发场景下出现的问题,经过查阅原因是OkHttp的 ......
information Address already further OkHttp

2023-04-13 [antd: Menu] `children` will be removed in next major version. Please use `items` instead.

问题描述:antd版本升级,需要对以往的版本的代码进行修改,版本>=4.20.0以上需要修改,<4.20.0则不用。 需要修改的组件为Menu,具体修改参考官方例子: // >=4.20.0 可用,推荐的写法 ✅ const items = [ { label: '菜单项一', key: 'item ......
children removed instead version Please

How to Calculate the size of archive log files each day

Calculate the size of archive log files each day SQL> SELECT TRUNC(COMPLETION_TIME) ARCHIVED_DATE, SUM(BLOCKS * BLOCK_SIZE) / 1024 / 1024 SIZE_IN_MB F ......
Calculate archive files size each

Visual Stadio 编译提示 The BaseOutputPath/OutputPath property is not set for project ...

完整的错误信息是: The BaseOutputPath/OutputPath property is not set for project 'xx.csproj'. Please check to make sure that you have specified a valid combina ......