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低功耗蓝牙ble
Python 的映射数据类型有哪些?零基础小白入门学习必看
1映射类关系Python的collections.abc模块内拥有Mapping和Muta
ble
Mapping这两个抽象基类,它们为dict和其他类似的类型提供了接口定义。
python阿喵
·
2024-03-02 17:37
分布式ID选型对比(2)
:mysqlmysql-connector-java8.0.19org.mybatis.spring.bootmybatis-spring-boot-starter2.2.2二,新建表CREATETA
BLE
qq_35255384
·
2024-03-02 17:35
框架部分
特定功能
springboot
分布式
分布式ID
分布式ID选型对比(4)
百度UIDgenerator一,创建表:worker_node(在项目启动时初始化生成workId)CREATETA
BLE
`worker_node`(`ID`bigintNOTNULLAUTO_INCREMENTCOMMENT'autoincrementid
qq_35255384
·
2024-03-02 17:35
框架部分
特定功能
springboot
分布式
分布式ID
h5兼容问题记录
弹窗滚动下面跟着滚动IOS-body添加和释放overflow:hiddenAndroid-https://www.npmjs.com/package/body-scroll-lockimport{disa
ble
BodyScroll
森林里的小姑娘
·
2024-03-02 14:31
前端
h5
兼容
单例模式之枚举
有的类加载时就初始化,浪费内存有的不保证多线程安全有的因为加了synchronized同步锁导致并发效率较低以上的单例模式都能通过反射,反序列化,克隆等方式被破坏publicclassSingletonTestDou
ble
CheckimplementsClonea
ble
HeroNet2010
·
2024-03-02 11:58
Java
单例模式
java
Filebeat将csv导入es尝试
一、安装在docker中安装部署ELK+filebeat二、主要配置-type:log#Changetotruetoena
ble
thisinputconfiguration.ena
ble
d:true#Pathsthatshouldbecrawledandfetched.Globbasedpaths.paths
白毛大侠
·
2024-03-02 08:52
elasticsearch
大数据
搜索引擎
hadoop启动报错处理
1.hadoop启动报错1.1.问题1util.NativeCodeLoader:Una
ble
toloadnative-hadooplibraryforyourplatform...usingbuiltin-javaclasseswhereapplica
ble
akuibpt23191
·
2024-03-02 08:51
大数据
操作系统
vue3实现表格单元格可编辑
需要达到的效果:方案一由于项目使用的是element-ui,所以一开始想到的就是去ta
ble
组件找有没有能满足此需求的属性。没想到还真有(cell-dblclick)。
HuaHua·Li
·
2024-03-02 07:50
javascript
vue.js
前端
elementui
vue3+ts实现图片预览功能
{type:String,required:true,},previewSrc:{type:String,required:true,},},setup(props){constpreviewVisi
ble
前端fighter
·
2024-03-02 07:49
vue.js
javascript
前端
[工具探索]-Gitlab的CI/CD操作
下面是一个简单的.gitlab-ci.yml文件的例子#.gitlab-ci.ymlstages:-build-test-deployvaria
ble
s:#定义环境变量DATABAS
ifanatic
·
2024-03-02 06:18
容器
gitlab
ci/cd
git
160. Intersection of Two Linked Lists
Pro
ble
mWriteaprogramtofindthenodeatwhichtheintersectionoftwosinglylinkedlistsbegins.Notes:Ifthetwolinkedlistshavenointersectionatall
SilentDawn
·
2024-03-02 04:35
Android 获取资源文件 r.drawa
ble
中的图片转换为drawa
ble
、bitmap
Android获取资源文件r.drawa
ble
中的图片转换为drawa
ble
、bitmap转载自http://blog.csdn.net/u013096866/article/details/445161631
龙先森
·
2024-03-02 02:13
android
资源文件转换为bitmap
图片
Android RecyclerView缓存机制
在它简单的使用方式之下着实是不简单,首先我们看一下官方对它的介绍:Aflexi
ble
viewforprovidingalimitedwindowintoalargedataset.很简单,就一句话「为大量数据集提供一个有限的展示窗口的灵活视图
Bfmall
·
2024-03-02 01:42
mysql数据库 - 统诉
1、DDL-数据库操作showdatabases;createdatabase数据库名use数据库名selectdatabase()dropdatabase数据库名2、DDL-表操作showta
ble
s
隐藏玩家
·
2024-03-02 00:11
数据库
mysql
oracle
spring常用注解总结
这个注解整合了@Configuration、@Ena
ble
AutoConfiguration和@ComponentScan注
爱写代码的小R
·
2024-03-01 23:39
Spring
spring
java
后端
python鼠标移动事件_python+selenium 鼠标事件操作方法
ActionChains类提供了鼠标操作的常用方法:perform()执行所有ActionChains中存储的行为context_click()右击dou
ble
_click(
weixin_39905037
·
2024-03-01 23:39
python鼠标移动事件
abrt-server导致数据库宕机
32db1abrt-hook-ccpp:Process59611(ocssd.bin)ofuser1000killedbySIGABRT-dumpingcoreJul2000:18:32db1abrt-server:Executa
ble
bestsun999
·
2024-03-01 22:38
Linux
Oracle_19c
数据库
linux
el-ta
ble
取消鼠标移入时变色
::v-deep.el-ta
ble
--ena
ble
-row-hover.el-ta
ble
__bodytr:hover>td{background-color:transparent;}
大可-
·
2024-03-01 21:07
vue.js
javascript
elementui
mysql5.7执行sql语句报错:In aggregated query without GROUP BY, expression #1 of SELECT list contains nonagg
InaggregatedquerywithoutGROUPBY,expression#1ofSELECTlistcontainsnonaggregatedcolumn'yunva_changke.u.user_id';thisisincompati
ble
withsql_mode
史庆雨
·
2024-03-01 17:20
【力扣白嫖日记】570.至少有5名直接下属的经理
前言练习sql语句,所有题目来自于力扣(https://leetcode.cn/pro
ble
mset/database/)的免费数据库练习题。
Gary.Li
·
2024-03-01 16:59
力扣刷题
leetcode
数据库
sql
centos7安装rabbitmq
执行命令yum-yinstallepel-releaseyumupdateyum-yinstallrabbitmq-server启用web插件rabbitmq-pluginsena
ble
rabbitmq_management
SangBigYe
·
2024-03-01 14:56
linux
rabbitmq
分布式
ansi
ble
playbook剧本
Ansi
ble
的Playbook一、playbook概述什么是playbookPlayBook即"剧本","兵书"之意,PlayBook是由以下部分组成的play(host):定义的是主机的角色。
小枫呀
·
2024-03-01 04:12
自动化运维工具
centos
linux
运维
使用Qt 6创建第一个CMAKE项目
CMakeLists.txt和main.cxxCMkeLists.txtcmake_minimum_required(VERSION3.15)project(TestLANGUAGESCXX)add_executa
ble
大白菜66
·
2024-03-01 03:11
Qt
C++
c++
cmake
qt
【大数据】Flink SQL 语法篇(七):Lookup Join、Array Expansion、Ta
ble
Function
共包含以下10篇文章:FlinkSQL语法篇(一):CREATEFlinkSQL语法篇(二):WITH、SELECT&WHERE、SELECTDISTINCTFlinkSQL语法篇(三):窗口聚合(TUM
BLE
G皮T
·
2024-03-01 02:40
#
Flink
SQL
大数据
flink
sql
Lookup
Join
Array
Expansion
Table
Function
维表
Join
Android D8 编译器 和 R8 工具,【一篇文章搞懂】
android.ena
ble
IncrementalDesugaring=false.android.ena
ble
Desugar=false2.1Lambda表达式Java8中一个重大变更是引入Lambda
安卓开发top
·
2024-02-29 22:04
Android
android
java
eclipse
移动开发
泽平 的ScalersTalk第七轮新概念朗读持续力训练Day 492 20220727
练习材料:Lesson24-1BeautyAyoungmanseesasunsetand,una
ble
tounderstandortoexpresstheemotionthatitrousesinhim
郑泽平
·
2024-02-29 20:49
华为设置telnet和consle只需要密码登陆
telnet配置telnetserverena
ble
user-interfacevty04authentication-modepassword,选择密码认证setauthenticationpasswordcipheradmin
项目工程师余工
·
2024-02-29 16:57
网络工程
服务器
数据库
linux
AcWing 872:最大公约数 ← 递归及非递归解法等
【题目来源】https://www.acwing.com/pro
ble
m/content/874/【题目描述】给定n对正整数ai,bi,请你求出每对数的最大公约数。【输入格式】第一行包含整数n。
hnjzsyjyj
·
2024-02-29 16:26
信息学竞赛
#
栈与递归
最大公约数
辗转相除法
更相减损法
openEuler离线安装docker
docker下载地址:https://download.docker.com/linux/static/sta
ble
/所有版本都有,根据你的需求去选择。
·
2024-02-29 16:52
openeulerdocker
maven配置踩坑实录
1.配置jdk2.配置maven3.cmd运行mvn-v报错TheJAVA_HOMEenvironmentvaria
ble
isnotdefinedcorrectly意思就是JAVA_HOME配置有问题4
倾云如歌
·
2024-02-29 09:17
maven
java
【Elasticsearch管理】节点角色及发现机制
文章目录节点角色MasterEligi
ble
NodeDataNodeIngestnodetribenodeCoordinatingnodeDataPath发现机制前置概念基本描述设置ZendiscoveryPing
板凳坐着晒太阳
·
2024-02-29 09:47
Elasticsearch
elasticsearch
大数据
Sql 查询一张表中哪些字段做了外键跟哪些表关联了
以下是一个通用的方法,适用于大多数关系型数据库(如MySQL,PostgreSQL,SQLServer等):SELECTfk.ta
ble
_nameAS'ChildTa
ble
',fk.column_nameAS'ForeignKeyColumn
三希
·
2024-02-29 06:44
sql
数据库
MySQL-等保测评指导书
1、身份鉴别密码复杂度、账户唯一性查看数据库所在安装目录下my.cnf/my.ini文件,其中是否不包含“skip-grant-ta
ble
s”参数,不允许跳过数据库权限验证;(一般位于/etc/my.cnf
ordersyhack
·
2024-02-29 05:43
应用扩展
程序开发
网络安全
mysql
adb
数据库
LeetCode59. 螺旋矩阵 II(C++)
LeetCode59.螺旋矩阵II题目链接代码题目链接https://leetcode.cn/pro
ble
ms/spiral-matrix-ii/代码classSolution{public:vector
板砖大的砖头
·
2024-02-29 01:08
矩阵
c++
线性代数
开发语言
leetcode
解决:selenium web browser 的版本适配问题
Thechromedriverversion(114.0.5735.90)detectedinPATHat/opt/homebrew/bin/chromedrivermightnotbecompati
ble
withthedetectedchromeversion
暖仔会飞
·
2024-02-29 01:08
selenium
前端
自动化工具
webdriver
Lodop关联内容分页打印
文章目录前言一、打印项关联二、ta
ble
内嵌条形码总结前言Lodop打印插件使用系列,本文交流下比较常用的需求。在打印的页面里面有2个或多个ta
ble
,它们的高度不固定。这种情况也要实现分页。
TE-茶叶蛋
·
2024-02-28 23:37
Lodop打印控件使用系列
javascript
c# 二个datata
ble
复制
//////DataTa
ble
间复制数据/////////privatestaticvoidCopyData(DataTa
ble
dtyuanSrc,DataTa
ble
dtmd){dtmd.Rows.Clear
vbloveshllm
·
2024-02-28 22:36
c#
java
前端
算法沉淀——动态规划之简单多状态 dp 问题(下)(leetcode真题剖析)
买卖股票的最佳时机含冷冻期02.买卖股票的最佳时机含手续费03.买卖股票的最佳时机III04.买卖股票的最佳时机IV01.买卖股票的最佳时机含冷冻期题目链接:https://leetcode.cn/pro
ble
ms
爱学习的鱼佬
·
2024-02-28 19:32
算法沉淀
算法
动态规划
leetcode
leetcode704. 二分查找
leetcode704.二分查找:https://leetcode.cn/pro
ble
ms/binary-search/description/给定一个n个元素有序的(升序)整型数组nums和一个目标值
~柠月如风~
·
2024-02-28 19:01
LeetCode
leetcode
c语言
审判者
Est-ceencoreunefoisquejesuisdansledésespoiretdansl'abîmedetouteslesplanètes,devoirl'obscuritésanslimiteettesdésirsintermina
ble
squim'enchaînentdansmoncoeur
爱奇艺_7a43
·
2024-02-28 16:55
mysql汇总
去重SEPARATOR’,‘逗号分割selectFIELD_NAME字段中文名,GROUP_CONCAT(DISTINCTFIELD_CODESEPARATOR‘,’)字段英文名fromda_dp_ta
ble
_fieldwhereFIELD_NAMEregexp
酸柠涛啊
·
2024-02-28 16:59
mysql
数据库
PriorityQueue
优先队列不允许空值,而且不支持non-compara
ble
(不可比较)的对象,比如用户自定义的类。
aloserbird
·
2024-02-28 12:55
java容器类
java
宋舒蕾一单元复盘
Part11,从本单元中我学到的最重要的理念(精读和视听说分别总结)精读:Theembarrassingthingsareinelucta
ble
inourdailyLife.视听说:Wecanlearnnewthingsinoursparetime
宋舒蕾
·
2024-02-28 09:47
Hive复杂数据类型之array
定义格式如下:createta
ble
ta
ble
Name(......colNamearray......)说明:下标从0开始,越界不报错,以null代替案例准备:测试数据zhangsan78,89,92,96lisi67,75,83,94
鸭梨山大哎
·
2024-02-28 08:48
hive
hive
array
数据类型
Java基础学习
2、异常分类Throwa
ble
是Java语言中所有错误或异常的超类。下一层分为Error和ExceptionError1.E
CopyLower
·
2024-02-28 03:42
学习
Java
java
学习
开发语言
工作中SQL优化实例1
CREATETA
BLE
`c_done_code`(`done_code`bigint(20)NOTNULLAUTO_INCREMENTCOMMENT'业务流水号',`login_sn`bigint(20
换煤气哥哥
·
2024-02-28 03:38
C语言变量
语言中存在很多的数据类型,例如:char //字符数据类型short //短整型int //整形long //长整型longlong //更长的整形float //单精度浮点数dou
ble
IT二哥
·
2024-02-28 00:08
C语言
算法
openeuler20.03在线安装docker最新版
更新系统软件包列表:sudoyumupdate-y添加Docker的官方仓库源:sudotee/etc/yum.repos.d/docker-ce.repo<
ble]
·
2024-02-27 20:48
openeulerdocker
java springcloud 微服务设计方案
springcloud+springcloudAlibaba+flowa
ble
流程引擎1.代码生成器:[正反双向](单表、主表、明细表、树形表,快速开发利器)freemaker模版技术,0个代码不用写,
IT祖师爷
·
2024-02-27 10:20
MongoDB聚合运算符:$atan2
语法{$atan2:[,]}为可被解析为数值的表达式$atan2返回弧度,使用$radiansToDegrees运算符可以把弧度转换为角度$atan2默认返回双精度数dou
ble
,如果表达式解析为128
原子星
·
2024-02-27 10:50
mongodb
mongodb
数据库
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