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BLE蓝牙协议
解决:pip is configured with locations that require TLS/SSL,the ssl module in Python is not availa
ble
Windows版出错提示表示当前python缺少SSL模块,pip默认安装源为https://pypi.org/simple/,连接是需要SSL库,写配置文件修改为阿里安装源。pipconfig--globalsetglobal.index-urlhttp://mirrors.aliyun.com/pypi/simple/观察到配置被写入以下文件:记事本打开pip.ini文件,在末行添加[inst
a_flyying_pig
·
2025-01-17 19:26
pip
ssl
python
交换机设备登录账号权限1_华为交换机telnet配置
[Huawei]telnetserverena
ble
[Huawei]undotelnetserverdisa
ble
2,配32313133353236313431303231363533e78988e69d8331333431336663
chemdrugs
·
2025-01-17 18:50
交换机设备登录账号权限1
应届生Java面试50题线程篇(含解析)
在Java中,可以通过实现Runna
ble
接口或继承Thread类来创建线程。创建线程的方式有哪些?各自的优缺点是什么?继承Thread类:继承Thread类并重写run()方法来实现多线程。
「已注销」
·
2025-01-17 18:17
java
面试
C语言数组
数组的创建:由数组类型数组名[常量表达式];构成代码1:intarr1[10];代码2:intcount=10;intarr2[count];代码3:chararr3[10];floatarr4[1];dou
ble
arr5
小杨今日不偷懒
·
2025-01-17 17:39
c语言
算法
开发语言
C# Linq 查询
1.Linq查询表达式基础Linq查询应用程序始终将源数据视为IEnumera
ble
或IQuerya
ble
集合。
鹿人甲丁
·
2025-01-17 16:33
.net
c#
linq
python中zip函数的琐记
定义:zip([itera
ble
,...])zip()是Python的一个内建函数,它接受一系列可迭代的对象作为参数,将对象中对应的元素打包成一个个tuple(元组),然后返回由这些tuples组成的list
weixin_33719619
·
2025-01-17 15:50
python
【深度强化学习】DQN:深度Q网络算法——从理论讲解到源码解析
【深度强化学习】DQN:深度Q网络算法——从理论讲解到源码解析介绍常用技巧算法步骤DQN源码实现网络结构训练策略DQN算法进阶双深度Q网络(Dou
ble
DQN)竞争深度Q网络(DuelingDQN)优先级经验回放
视觉萌新、
·
2025-01-17 15:17
深度强化学习
深度Q网络
DQN
如何解决MySQL 的深度分页问题?
背景介绍假设我们有一个包含500万条记录的表my_ta
ble
·
2025-01-17 15:43
数据库mysql
记录yolo v8模型训练后使用.pt模型推理正常 改用转换后的.onnx模型推理出现WARNING ⚠️ Una
ble
to automatically guess model task, assu
yolov8版本:‘8.0.228’出现错误:WARNING⚠️Una
ble
toautomaticallyguessmodeltask,assuming'task=detect'.Explicitlydefinetaskforyourmodel
YANGXUSHI520
·
2025-01-17 13:32
问题相关
YOLO
深度学习
人工智能
如何使用生成式表达式生成列表、元组或字典?
列表生成式列表生成式的基本语法为:[expression for item in itera
ble
if condition]其中:expression是对item的操
计算机学长大白
·
2025-01-17 12:58
python
python
开发语言
二维矩形装箱问题
二维矩形装箱问题问题描述问题分析如何放置如何决定矩形出现的顺序运行结果问题描述二维矩形装箱问题(2Drectangularpackingpro
ble
m,简称2DRP)是一种常见的问题,常用在物流运输或材料切割场景下
来瓶霸王防脱发
·
2025-01-17 12:23
笔记
数学建模
mysql WITH的多种用法与示例
在MySQL中,WITH语句(或称为公用表表达式,CommonTa
ble
Expressions,简称CTE)用于定义一个临时结果集,可以在查询的其他部分中重复引用。
m0_74824534
·
2025-01-17 12:21
mysql
数据库
ansi
ble
ansi
ble
.cfg 配置项详解
ansi
ble
.cfg文件是Ansi
ble
的主配置文件,用于定义各种全局设置和行为。通过这个文件,你可以定制Ansi
ble
的工作方式,包括默认Inventory文件的位置、日志记录、并行任务的数量等。
学亮编程手记
·
2025-01-17 10:05
Linux
ansible
linux
开源项目怎么搞钱 · 上
Disquswasalsoanena
ble
rtomyopensourcecontributio
·
2025-01-17 10:26
Spring中的@Cachea
ble
注解基本知识点
r6rqmzDaXpYkJZF对于Java的基本知识推荐阅读:java框架零基础从入门到精通的学习路线附开源项目面经等(超全)【Java项目】实战CRUD的功能整理(持续更新)1.基本知识@Cachea
ble
码农研究僧
·
2025-01-17 09:27
Java
spring
java
后端
Cacheable
python xlwings api_Python - xlwings基本使用
pipinstallxlwingscondainstallxlwings引用xlwingsimportxlwingsasxw创建和退出excelApplication对象app1=xw.App(visi
ble
weixin_39974223
·
2025-01-17 09:55
python
xlwings
api
Python 库的使用 —— dis
dis:Disassem
ble
rofPythonbytecodeintomnemonics.Java、Python、Ruby1.9这些语言均使用了栈机器型的VM。
weixin_30902251
·
2025-01-17 09:24
python
ruby
java
DWARF调试格式
DWARF调试格式ELF全称Excuta
ble
Linka
ble
Format,即可执行和可链接格式。DWARF全称DebuggingWithAttributedRecor
Mentaclause
·
2025-01-17 08:50
linux
在Ubuntu16.04配置Nginx1.10.3
Nginx简介Nginx(“enginex”)是一个高性能的HTTP和反向代理服务器,也是一个IMAP/POP3/SMTP服务器,是由IgorSysoev为俄罗斯访问量第二的Ram
ble
r.ru站点开发的
monisiter
·
2025-01-17 08:49
安装参考
nginx
负载均衡
替代开方运算sqrt
8位mcu开方math.h容易超ROM空间;下面几种替代方案:二分法逐次逼近,牛顿法,#definesqrtsqrt_16//sqrt0//sqrt1//sqrt2floatfsqrt(dou
ble
number
qq_24158561
·
2025-01-17 08:18
算法
c语言
stm32
c#
上位机通讯 结构体发送和解析
结构体默认按结构体中最长字节比如dou
ble
,float,int对齐。
qq_24158561
·
2025-01-17 08:18
单片机
嵌入式硬件
c语言
MySQL 排除指定时间内重复记录的解决方案
表结构假设我们有一张记录数据的表event_logs,其结构如下:CREATETA
BLE
event_logs(idINTPRIMARYKEYAUTO_INCREMENT,event_timeDATETIMENOTNULL
魔法工坊
·
2025-01-17 08:17
Mysql
mysql
数据库
JPA使用原生SQL实现分页查询、排序
1.使用PageRequest.of静态方法创建一个PageRequest对象或者Pagea
ble
接口;Pagea
ble
pageRequest=PageRequest.of();2.传入分页和排序的参数
weixin_45834569
·
2025-01-17 06:58
sql
hibernate
数据库
从头到尾快速学习一遍Linux,高级工程师多年实践实战经验精华总结和实例示例,第七章:Linux精通学习路线及各个大厂优秀的学习资料
tcp_wrappers################################Linux系统下的防火墙主要分为两层:第一层是对IP进行过滤的ipta
ble
s,第二层
代码讲故事
·
2025-01-17 05:56
服务器
学习
linux
服务器
运维
网络
资料
教程
innodb存储引擎
FlushListinnodb引擎特点:支持事务(myisam无)支持行锁,表锁(myisam只支持表锁)支持外键(myisam无)通过对版本并发控制(mvcc)来获得高并发性插入缓存(insertbuffer)二次写(dou
ble
write
朱朱朱--
·
2025-01-17 05:54
mysql
MySQL查询语句大全
1.基本查询查询所有记录SELECT*FROMta
ble
_name;说明:*表示选择表中的所有列。此语句将返回表中所有的记录。查询特定列SEL
·
2025-01-17 05:33
MySQL 回收表碎片实践教程
查看表碎片大小一般MySQL数据库都是开启innodb_file_per_ta
ble
参数的,这代表每个表使用独立的表空间,即每个表的数据及索引存储在一个独立的表名.ib
·
2025-01-17 04:27
mysql数据库运维
Calla
ble
接口
Calla
ble
是Java5引入的一个接口,位于java.util.concurrent包中。它类似于Runna
ble
接口,但提供了更强大的功能。
難釋懷
·
2025-01-17 04:18
java
spring cache 配置缓存存活时间
SpringCache@Cachea
ble
本身不支持keyexpiration的设置,以下代码可自定义实现SpringCache的expiration,针对Redis、SpringBoot2.0。
·
2025-01-17 04:23
《CPython Internals》阅读笔记:p177-p220
memoryallocationinC(1)staticmemeoryallocationMemoryrequirementsarecalculatedatcompiletimeandallocatedbytheexecuta
ble
whenitstarts
·
2025-01-17 04:23
python
SQLite3 使用Python快速操作单体文件的sqlite数据库
CSDN]SQLBasicVERSION2DataBase基础概念关系型数据库常见操作即SQL(StructuredQueryLanguage)语法创建/删除/修改表CREATE/DROP/ALTERTA
BLE
XLY23333
·
2025-01-17 04:12
SQL
Python
数据库
sqlite
python
对于vue中<template #default=“{row}“> 的解释
是一个在Vue.js的模板中使用的语法,特别是在Vue的表格组件(如ElementUI的el-ta
ble
)中。这个语法是用于定义如何渲染表格的每一行数据。
wangyk,C'est la vie
·
2025-01-17 04:41
vue.js
javascript
elementui
法国第二大互联网服务商遭遇数据泄露,波及1900万用户
据
Ble
epingComputer消息,法国主要互联网服务提供商(ISP)Free在上周末证实,稍早前有黑客入侵了其系统并窃取了用户的个人信息。
FreeBuf-
·
2025-01-17 04:41
资讯
网络
22.C语言Unicode编码与多字节字符处理详解
目录1.Unicode简介2.字符的表示方法3.多字节字符的表示4.宽字符5.多字节字符处理函数5.1m
ble
n5.2wctomb5.3mbtowc()5.4wcstombs5.5mbstowcs本篇原文为
余识-
·
2025-01-17 02:30
C语言基础
c语言
数据库
Oracle SQL每日一问之ORA-01723:zero-length columns are not allowed
我:CREATETA
BLE
TA
BLE
_1PARALLEL8ASSELECT/*+parallel(8)*/t1.emp_no,NULLemp_nameFROMtemp1t1;[AI机器人bot:]在你的
yan han
·
2025-01-17 02:29
ORACLE
SQL
oracle
sql
数据库
【YashanDB知识库】过期统计信息导致SQL执行计划变差
--查看表的统计信息失效状态的表selectTA
BLE
_NAME,NUM_ROWS
·
2025-01-17 00:17
数据库
vue3中的provide和inject实用案例之基于el-dialog的命令式弹框,直接一行js代码打开
我们要使用一个弹框组件的时候一般都是这样使用:Thisisadialogimport{ElDialog}from'element-plus'import{ref}from"vue";constdialogVisi
ble
·
2025-01-17 00:44
内联变量(inline varia
ble
s):在多个文件中共享全局常量
在C++17中,引入了内联变量(inlinevaria
ble
s)的概念,可以用于在多个文件中共享全局常量。内联变量允许在头文件中定义变量,而不会导致链接错误(如重复定义)。
Alvin's Tech Blog
·
2025-01-17 00:10
C/C++学习
c++
inline
variable
解决“Una
ble
to start embedded Tomcat“错误的完整指南
解决"Una
ble
tostartembeddedTomcat"错误的完整指南在开发过程中,遇到"Una
ble
tostartembeddedTomcat"错误是较为常见的问题。
·
2025-01-16 23:58
Java语言基础 关键字与保留字
javase/tutorial/java/nutsandbolts/_keywords.html用于定义数据类型的关键字classinterfaceenumbyteshortintlongfloatdou
ble
c
鹿人甲丁
·
2025-01-16 23:32
java
java
Java异常 (throwa
ble
)
异常主要是error和exception两种(throwa
ble
的两个子类)1、Error类及其子类,代表的是Error类及其子类,代表的是jvm本身的错误,错误不能被程序通过代码处理2、Exception
凡人多做梦
·
2025-01-16 23:57
java
c++语法基础
java
力扣 155. 最小栈
https://leetcode.cn/pro
ble
ms/min-stack/description题目实现一个stack,可以o1返回stack的最小值思路刚开始套单调队列了,后来发现并不需要那么麻烦每次记录比当前栈顶还小的值
pursuit_csdn
·
2025-01-16 22:26
力扣热题
100
leetcode
算法
职场和发展
upstart man
NAMEinit-UpstartprocessmanagementdaemonSYNOPSISinit[OPTION]...DESCRIPTIONinitistheparentofallprocessesonthesystem,itisexecutedbythekernelandisresponsi
ble
forstartingallotherproce
weixin_30672019
·
2025-01-16 22:25
shell
runtime
Vue3中使用hook实现按住Shift快速勾选el-ta
ble
功能
需求描述最近产品说,某个el-ta
ble
要实现按住shift键快速勾选功能大概就是仿windows系统的文件shift按住选中功能反正就是尽可能多的让用户勾选方便用户快速勾选操作github完整代码:https
·
2025-01-16 22:04
MARC 数据解析(qbit)
前言MARC是MachineReada
ble
Catalog(ue)的缩写,意即“机器可读目录”,即以代码形式和特定结构记录在计算机存储载体上的、用计算机识别与阅读的目录。
·
2025-01-16 22:01
pythonlibrary
Java Throwa
ble
Java的Exception处理机制中,基类是:throwa
ble
,然后exception和error继承自throwa
ble
.RuntimeException继承自Exception.
tony_elizabeth
·
2025-01-16 22:52
Java
Java
Sonatype Nexus OSS 构建私有docker 仓库
1.DockerEngine配置{"builder":{"gc":{"defaultKeepStorage":"20GB","ena
ble
d":true}},"dns":["8.8.8.8","114.114.114.114
UTF杠8
·
2025-01-16 22:19
docker
容器
运维
开源
实现列表拖拽排序功能,可新增,可删除,拖住排序,dragga
ble
,dragstart,dragend,dragover,利用好这几个事件,完美实现拖拽功能
你好呀,我是爱编程的Sherry,很高兴在这里遇见你!我是一名拥有十多年开发经验的前端工程师。这一路走来,面对困难时也曾感到迷茫,凭借不懈的努力和坚持,重新找到了前进的方向。我的人生格言是——认准方向,坚持不懈,你终将迎来辉煌!欢迎关注我,我将在这里分享工作中积累的经验和心得,希望我的分享能够给你带来帮助。文章目录前言效果展示功能说明新增:删除:拖拽排序:关键点:代码实现html(结构)css(样
Sherry Tian
·
2025-01-16 21:18
javascript
javascript
前端
dou
ble
值精确到小数点后两位
dou
ble
值精确到小数点后两位功能将程序中的dou
ble
值精确到小数点后两位。可以四舍五入,也可以直接截断。比如:输入12345.6789,输出可以是12345.68也可以是12345.67。
码农小灰
·
2025-01-16 21:13
java
java
编程语言
java throwa
ble
java异常throwa
ble
分为exception、errorerror错误程序无法处理的错误exception异常程序本身可以处理的异常exception分为运行时异常、非运行异常[运行时异常、error
happyzwh
·
2025-01-16 21:42
java
java
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