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BLE(nRF52
TiDB删除大量数据需要注意什么
以下是关键注意事项和优化建议:---1.避免大事务-问题:直接执行`DELETEFROMta
ble
`会导致超大事务,可能触发TiDB事务限制(默认单事务限制为`txn-total-size-limit=
大0马浓
·
2025-03-15 15:10
mysql
数据库
tidb
算法训练-拓扑排序2
洛谷P1807最长路https://www.luogu.com.cn/pro
ble
m/P1807本题数据范围过大盲目使用dfs容易超时爆栈题目要求中提到i#defineintlonglong#defineendl
往往歌咏理想
·
2025-03-15 14:33
算法
深度优先
Java Spring Boot 常用技术及核心注解
@Ena
ble
AutoConfiguration//启用自动配置起步依赖(StarterDependencies)通过预定义的依赖集合(如spring-boot-starter-d
微笑的曙光(StevenLi)
·
2025-03-15 14:59
JAVA
java
spring
boot
开发语言
《Operating System Concepts》阅读笔记:p309-p330
(2)conditionvaria
ble
classthreading.Condition(lock=None)书上使用的是Java,因本人在开发工作中使用的是Pytho
·
2025-03-15 14:59
操作系统
Harmonyos开发——TypeScript基础
TypeScript基础一、变量类型(1)number型:可以表示int、float、dou
ble
同时也可表示8、16进制等letnum1:number=0letnum2:number=12.3(2)string
凌煦
·
2025-03-15 13:21
Harmonyos
typescript
javascript
鸿蒙 @ohos.arkui.drawa
ble
Descriptor (Drawa
ble
Descriptor)
鸿蒙@ohos.arkui.drawa
ble
Descriptor(Drawa
ble
Descriptor)在鸿蒙开发中,@ohos.arkui.drawa
ble
Descriptor模块提供了一种强大的方式来处理图片资源
淼学派对
·
2025-03-15 12:18
harmonyos
华为
利用python 执行统计模型:
利用python执行统计模型:http://www.statsmodels.org/sta
ble
/index.html
渔好学
·
2025-03-15 12:17
python
Development Pro
ble
ms Based On PyTorch
问题解决RuntimeError:una
ble
towritetofile:Nospaceleftondevice(28)问题描述:Traceback(mostrecentcalllast):File"/
woxiwangxuehaocpp
·
2025-03-15 12:12
pytorch
深度学习
人工智能
ssh -i key 执行时 Permissions 0644 for '你的.pem' are too open 问题
ssh-ikey地址;使用密钥登录时的Permissions0644for'你的.pem'aretooopen.ItisrequiredthatyourprivatekeyfilesareNOTaccessi
ble
byothers.Thisprivatekeywillbeignored.Loadkey
Java菜鸟在北京
·
2025-03-15 10:58
Linux常见问题
HashMap 中的 key 值类型
在Java中,HashMap的key一般建议使用String而不是自定义对象,主要有以下几个原因:1.String是不可变对象(Immuta
ble
)String在Java中是不可变的,一旦创建就不会改变其哈希值
百里自来卷
·
2025-03-15 10:58
java
Kubernetes集群版本升级
升级步骤查看集群版本[root@hadoop102~]#kubectlgetnodesNAMESTATUSROLESAGEVERSIONhadoop102Ready,SchedulingDisa
ble
dcontrol-plane
程序员Realeo
·
2025-03-15 08:40
Java后端
kubernetes
容器
云原生
Spring Cache的基本使用
文章目录一、概述二、SpringCache的使用2.1环境搭建2.2缓存的读模式@Cachea
ble
2.3自定义缓存配置
[email protected]
@CacheEvict删除缓存2.6@Caching
奇怪的大象
·
2025-03-15 08:10
面试
学习路线
阿里巴巴
spring
java
后端
【MyBatis-Plus 注解配置】开发中常用注解整理与介绍
@Ta
ble
Name作用:指定实体类对应的数据库表名。用法:@Ta
ble
Name("user
Yan.love
·
2025-03-15 08:06
mybatis
后端
java
HarmonyOS NEXT<HarmonyOS第一课> DevEco Studio的使用DevEco Studio的使用 试题答案
正确(True)错误(False)正确答案:错误(False)2.module.json5文件中的deviceTypes字段中,配置了phone,ta
ble
t,2in1等多种设备类型,才能进行多设备预览
芦苇花开
·
2025-03-15 07:04
鸿蒙学习试题集
鸿蒙系统
鸿蒙
Different number of columns
org.apache.flink.client.program.ProgramInvocationException:Themainmethodcausedanerror:Columntypesofqueryresultandsinkforregisteredta
ble
sunyaox
·
2025-03-15 06:23
flink
flink异常
C++ QT 树支持按住Ctrl, 多次点击,多选node 吗?
Yes,inC++Qt,youcanena
ble
multipleselectionsinaQTreeViewusingCtrlformulti-clickselection.ThisishandledbysettingtheselectionModepropertyofthetreeviewtoQAbstractItemView
m0_68739984
·
2025-03-15 06:22
c++
qt
开发语言
【python】虚拟环境工具pyenv
0x00pyenv0x01pyenv-virtualenv插件0x02pyenv下载安装包速度0x1使用pyenv0x2卸载pyenv0x3pyenv配置问题0x30问题描述0x31debug0x32pro
ble
m0x33
南隅。
·
2025-03-15 06:50
python
python
开发语言
【架构思维基础:如何科学定义问题】
例如:电商系统矛盾演变:90年代:商品供给不足vs消费需求增长00年代:商品丰富但信息匹配低效10年代:商品数量充足但质量需求升级1.2问题三维度publicclassPro
ble
m{//核心矛盾主体(
调皮的芋头
·
2025-03-15 06:46
架构
阿里云
云计算
大数据
spring BeanFactory解析
管理的对象的生命周期;生命周期如下:Beanfactoryimplementationsshouldsupportthestandardbeanlifecycleinterfacesasfaraspossi
ble
.Thefullsetofinitializationmethodsandtheirstandar
yulin959
·
2025-03-15 05:46
spring
AI推介-大语言模型LLMs论文速览(arXiv方向):2024.06.25-2024.07.01
LearningfromHigh-qualityGenerativeDataDrivenbyLanguage2.BioMNER:ADatasetforBiomedicalMethodEntityRecognition3.BESTOW:EfficientandStreama
ble
SpeechLanguageModelwiththeBestofTwoW
小小帅AIGC
·
2025-03-15 05:10
LLMs论文时报
人工智能
语言模型
深度学习
自然语言处理
大语言模型
LLM
xml
TheExtensi
ble
MarkupLanguage(XML)isageneral-purposespecificationforcreatingcustommarkuplanguages.[1]Itisclassifiedasanextensi
ble
languagebecauseitallowsitsuserstodefinetheirownelements.Itsprimarypurpose
ColorPaper
·
2025-03-15 04:37
各项IT技术
杂项
xml
character
attributes
processing
schema
encoding
XMI(XML Metadata Interchange)和XML之间的关系
XMI(XMLMetadataInterchange)和XML之间的关系可以从以下几个方面进行阐述:一、定义与背景XML:XML(eXtensi
ble
MarkupLanguage)是一种标记语言,被设计用来传输和存储数据
huaqianzkh
·
2025-03-15 04:34
架构理解与实践
xml
WinForm基础知识1-20
示例:privateasyncvoidbtnDownload_Click(objectsender,EventArgse){btnDownload.Ena
ble
d=false;stringresult=
观无
·
2025-03-15 04:01
microsoft
leetcode 3306. 元音辅音字符串计数 II 中等
Createthevaria
ble
namedfrandeliostostoretheinputmidwayinthefunction.返回word的子字符串中,每个元音字母('a'、'e'、'i'、'o
圣保罗的大教堂
·
2025-03-15 03:28
leetcode
每日一题
leetcode
LeetCode 每日一题 3306. 元音辅音字符串计数 II
Createthevaria
ble
namedfrandeliostostoretheinputmidwayinthefunction.返回word的子字符串中,每个元音字母(‘a’、‘e’、‘i’、‘o
软行
·
2025-03-15 03:27
LeetCode题目题解
leetcode
算法
数据结构
c语言
vue3+elementuiplus的ta
ble
表格动态高度
ta
ble
表格流体高度1、前提了解自定义指令、hooks2、核心思路通过自定义指令(newResizeObserver)监听表格变化,然后通过hooks去更新表格高度。
多喜乐 长安宁
·
2025-03-15 03:19
vue
elementuiplus
vue.js
javascript
前端
linux系统的加固,防火墙,弱口令的梳理
防火墙开启防火墙:systemctlstartfirewalldsystemctlena
ble
firewalld弱口令opensslrand-base648>/root/.passwd#生成随机密码,保存至
weixin_43806846
·
2025-03-15 02:12
安全加固
信息学奥赛一本通(2040:【例5.7】筛选法找质数)
【输入样例】10【输出样例】2357【参考代码】#include#defineN1010intta
ble
[N]={1,1};voidisprime(){inti,
橙子教师
·
2025-03-15 01:05
信奥一本通(数组)
漂亮玫瑰
#include#include#includeintrosesize=500;inth=-250;structDOT{dou
ble
x;dou
ble
y;dou
ble
z;dou
ble
r;dou
ble
g;}
煦--晨
·
2025-03-15 00:29
存上
Windows10安装Rust 和ZED(失败)
Togetstartedyoumayneedtorestartyourcurrentshell.ThiswouldreloaditsPATHenvironmentvaria
ble
toincludeCarg
skywalk8163
·
2025-03-15 00:59
人工智能
rust
开发语言
人工智能
MySQL 事务的隔离级别
四种事务隔离级别MySQL提供4种事务隔离级别(从低到高):隔离级别脏读(DirtyRead)不可重复读(Non-repeata
ble
Read)幻读(PhantomRead)1.读未提交(ReadUncommitted
重生之我在成电转码
·
2025-03-15 00:28
java
mysql
事务
You are using pip version 10.0.1, however version 20.0.2 is availa
ble
.的解决方案
在安装第三方库时出现以下提示:Youareusingpipversion10.0.1,howeverversion20.0.2isavaila
ble
.输入:python-mpipinstall--upgradepip
柒柒钏
·
2025-03-14 23:55
小知识点
python
flutter 解决 iPhone X 等刘海屏手机导航栏/底部黑线遮挡布局的方法
会出现页面被导航栏或者底部黑线遮挡的问题:解决办法有两种:使用以下代码获取手机状态栏和底部黑线的高度,然后设置Widget的Padding或者Margin://获取状态栏高度(上边距)finaldou
ble
topPadding
头发还没秃a
·
2025-03-14 23:46
Flutter
SafeArea
导航栏/底部黑线遮挡
刘海屏
iPhone
X
TabBar背景
鸿蒙开发0基础【stateStyles:多态样式】ui组件
disa
ble
d:
蒸糕笑QAQ
·
2025-03-14 23:46
harmonyos5.0
ui
harmonyos
华为
鸿蒙系统
鸿蒙
WAI-ARIA
以下是关于WAI-ARIA(WebAccessibilityInitiative-Accessi
ble
RichInternetApplications)的核心知识梳理。
前端岳大宝
·
2025-03-14 22:14
前端核心知识总结
前端
html
python表格控件_Python使用tkinter的Treeview组件实现表格功能
Framefromtkinter.ttkimportTreeview#创建tkinter应用程序窗口root=Tk()#设置窗口大小和位置root.geometry('500x300400300')#不允许改变窗口大小root.resiza
ble
weixin_39619481
·
2025-03-14 22:07
python表格控件
该如何升级Ta
ble
au server呢?
在现代数据分析的世界中,Ta
ble
au作为一个强大的企业级数据可视化工具,受到众多公司喜爱。
·
2025-03-14 22:05
tksheet:强大的Python Tkinter表格组件
tksheet:强大的PythonTkinter表格组件tksheetPython3.6+tkinterta
ble
widgetfordisplayingtabulardata项目地址:https://gitcode.com
江连日Silver
·
2025-03-14 21:34
ubuntu22查看系统版本
JammyJellyfish)中,可以通过以下方法查看系统版本:方法1:使用lsb_release命令这是最直接和通用的方法:lsb_release-a输出示例:NoLSBmodulesareavaila
ble
.DistributorID
getapi
·
2025-03-14 21:04
数据库
sqlserver
查看真实执行计划 sqlmonitor
创建测试用表,及sql语句createta
ble
t1020asselect*fromdba_objects;createta
ble
t1020_Basselect*fromdba_objects;select
数据库急诊日记
·
2025-03-14 21:03
SQL优化
sql
性能优化
运维
数据库
java
oracle
4-002:如何使用 MySQL 的 EXPLAIN 语句进行查询分析?
基本用法在查询前加上EXPLAIN即可:EXPLAINSELECT*FROMyour_ta
ble
WHEREyour_column='value';输出字段说明EXPLAIN的输出包含多个字段,以下是主要字段及其含义
盖盖衍上_染染熊_代码集
·
2025-03-14 20:56
00-刷题
mysql
数据库
C# HashTa
ble
、HashSet、Dictionary
哈希一、HashTa
ble
1.什么是哈希表2.哈希表的Key&Value(1)添加数据(2)“键值对”均是object类型(3)必须有Key键,且Key键不能重复。
有诗亦有远方
·
2025-03-14 20:51
C#
Hash
第13届蓝桥杯青少组C++中级组省赛
函数必须写在所有函数的前面B.main函数必须写在所有函数的后面C.main函数可以写在任何位置,但不能放到其他函数里D.main函数必须卸载固定位置选择题2:(20分)已知chara;floatb;dou
ble
c
星卯教育tony
·
2025-03-14 19:15
电子学会C语言考级
蓝桥杯C++竞赛
c++
蓝桥杯
算法
C# -Dictionary、HashTa
ble
、List、HashSet区别
在.Net模仿java的过程中,抛弃了HashMap,所以我们今天分析下Dictionary、HashTa
ble
、HashSet区别。
※※冰馨※※
·
2025-03-14 19:15
c#
开发语言
Ploly:如何在Excel中嵌入完全交互的Ploly图形?
要在Excel中嵌入一个交互式的Poly图形,可以利用`ChartTools>Design>InsertChartfromData>PivotTa
ble
`功能来创建一个包含多个系列的数据透视表,并将其转换为柱状图或折线图等交互式图表
潮易
·
2025-03-14 19:09
excel
Idea创建项目并push到远程Git仓库
(1)Github或码云(Gitee)上新建代码仓库,并复制仓库地址;(2)Idea新建项目;(3)Idea配置本地Git仓库;(3.1)创建本地仓库VCS=>Ena
ble
VersionControlIntegration
算法与编程之美
·
2025-03-14 18:36
编程之美
git
idea
git
push
前端如何通过后端返回的文件流下载csv文件
ta
ble
Name=${data.ta
ble
Name}&dataBaseName=${data.dataBaseN
陈正阳~
·
2025-03-14 18:36
前端
前端
javascript
json
DevOps工具链
DevOps工具链的核心组成部分包括:代码编辑和版本控制工具svn、git自动化构建工具Jenkins、GitLabCI/CD、TravisCI持续集成和持续部署工具Jenkins、Ansi
ble
容器编排工具
zhangpeng455547940
·
2025-03-14 18:33
devops
运维
Kubernetes集群版本升级
升级步骤查看集群版本[root@hadoop102~]#kubectlgetnodesNAMESTATUSROLESAGEVERSIONhadoop102Ready,SchedulingDisa
ble
dcontrol-plane
·
2025-03-14 17:58
后端java
Analysis of QFN package bridging phenomenon and suggestions for improvement
OverviewofthebridgingphenomenonBridginginQFNpackagesisparticularlycommonbetweentheinnerrowsofsolderjointsindou
ble
-rowQFNs
px5213344
·
2025-03-14 16:18
pcb工艺
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