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低功耗蓝牙BLE
Java中HashSet、HashMap和HashTa
ble
的区别
Java中HashSet、HashMap和HashTa
ble
的区别1.官方文档对这三者的介绍1.1Hashta
ble
1.2HashMap1.3HashSet2.三者之间的区别2.1Hashta
ble
和Has
Sueko
·
2024-08-29 01:14
日常学习笔记
Java
java
开发语言
Openstack 与 Ceph集群搭建(下): Openstack部署
文章目录文章参考部署节点准备1.修改Host文件与hostname名称2.安装NTP软件3.网卡配置信息4.开启Docker共享挂载5.安装python虚拟环境6.安装kolla-ansi
ble
7.加载
范枝洲
·
2024-08-29 01:43
系统运维
openstack
ceph
请编写函数fun,其功能是:计算并输出下列多项式的值,S=(1-1/2)+(1/3-1/4)+…+(1/(2n-1)-1/2n),要求n的值大于1但不大于100
#includedou
ble
fun(intn){dou
ble
r=0,x=0,sum=0;dou
ble
i;if(n>1&&n<=100){for(i=1;i<=n;i++){r=1/(2*i-1);x=1
Charlotte_yu
·
2024-08-29 00:40
算法
c语言
华为AC+AP上线配置
maguangjie/17723351.拓扑搭建拓扑图.jpg2.配置思路导图华为无线配置导图.jpg3.配置步骤AC基础配置[AC6605]vlanbatch100101#创建vlan[AC6605]dhcpena
ble
LeslieLiang
·
2024-08-29 00:16
数仓之TA
BLE
SAMPLE采样
前言在日常工作中,我们会对表中记录随机抽样然后探查,如何进行抽样就是本章要讲的重点。数仓中的抽样方法有很多,这里主要介绍一下:随机抽样、块抽样、桶抽样、分组抽样这四种,话不多说,直接上干货。随机抽样随机抽样就是给每行数据赋值一个随机数,排序之后进行抽样,主要分为:orderby,直接全局排序。distributeby+sortby,先分组再排序。orderByselect*fromuserinfo
Luckyforever%-
·
2024-08-29 00:39
Hive
MaxCompute
maxcompute
hive
sql
大数据
数据仓库
数据分析
C++常见的十种常见排序算法汇总
实现代码免费下载链接1.冒泡排序(Bub
ble
Sort)#include#includevoidbub
ble
Sort(std::vector&arr){intn=arr.size();for(inti=
LQS2020
·
2024-08-29 00:07
c++
算法
开发语言
leetCode_23_合并k个有序链表(dart实现)
23合并k个有序链表[toc]题目:https://leetcode-cn.com/pro
ble
ms/merge-k-sorted-lists/请你将所有链表合并到一个升序链表中,返回合并后的链表。
锦鲤跃龙
·
2024-08-28 23:31
Rust: Filesystems and Command-Line Tools
Asamodern,safe,andfastsystemsprogramminglanguage,itgivesprogrammersatoolboxtheycanusetoassem
ble
slickcommand-linein
0010000100
·
2024-08-28 23:59
Rust
rust
开发语言
后端
11-spring的自动配置原理
自动配置是通过Spring框架中的@Ena
ble
AutoConfiguration注解实现的,它会尝试根据类路径中的jar依赖自动配置Spring容器。
weixin_41775999
·
2024-08-28 22:26
spring
2024HarmonyOS应用开发者高级认证最新整理题库和答案(已收录182道 )
@Senda
ble
C.@StyleD.@State2.在方舟字节码的函数调用规范中,前三个参数表示的含义分
孤舟蓑影
·
2024-08-28 21:19
前端
学习
鸿蒙
typescript
harmonyos
安卓
ios
thinkphp:数据库多条件查询
一、使用if条件限制查询条件$query=Db::ta
ble
('wip_operation_plan')->alias('d')->join(['wip_jobs_all'=>'a'],'a.wip_entity_name
25号底片~
·
2024-08-28 21:46
thinkphp
数据库
数据库
oracle
sql
CMAKE中指定c++版本
CMAKE_CXX_STANDARD20)set(CMAKE_CXX_STANDARD_REQUIREDON)set(CMAKE_CXX_EXTENSIONSOFF)添加你的源文件add_executa
ble
nb的码农
·
2024-08-28 20:10
c++
开发语言
Postgresql自定义字段默认值的格式
可如下实现:首先建一个序列:CREATESEQUENCEtest_seqINCREMENT1START1MINVALUE1MAXVALUE99999CACHE1;然后建表,例如:CREATETA
BLE
test
_平凡之路_
·
2024-08-28 20:38
PostgreSQL实战
postgresql
数据库开发
字段默认值
SQL统计行数的语句
以下是一些使用COUNT()函数的基本示例:统计整个表的行数SELECTCOUNT(*)FROMta
ble
_name;统计特定条件下的行数SELECTCOUNT(*)FROMta
ble
_nameWHEREcondition
TimeDoor
·
2024-08-28 20:08
数据库
sql
数据库
SQL-DCL-数据控制语言
一、DCL-管理用户二、DCL-权限控制一、DCL-管理用户,主要是DBA数据库管理员使用,开发使用较少#1、查询用户usemysql;showta
ble
s;descuser;select*fromuser
向日葵般的数学人~
·
2024-08-28 20:38
SQL
sql
数据库
《逸剑风云决》msvcr100.dll缺失错误的快速修复方法——步骤清晰的故障排除流程
以下是一些详细的步骤来帮助你解决这个问题:1.重新安装VisualC++Redistributa
ble
msvcr100.dll是MicrosoftVisualC++201
Xixix777
·
2024-08-28 19:32
经验分享
玩游戏
电脑
【前端知识整理】CSS布局 快速居中,两栏布局与三栏布局
中的各种布局方法1快速居中对齐的方法2两栏布局2.1左列定宽右列自适应2.1.1浮动+margin方法2.1.2浮动+BFC2.1.3定位(子绝父相)2.1.4flex2.1.5浮动+负外边距2.1.6ta
ble
2.2
EnoshSAGIRI
·
2024-08-28 18:24
css
css
前端
css3
跟着Cell学单细胞转录组分析(十二):转录因子分析
2、《Ascala
ble
SCENICworkflowforsingle-cellgeneregulatoryne
KS科研分享与服务
·
2024-08-28 18:02
Hive 分区表 & 数据加载
hdfs绝对路径]例如:测试文件test_001.txt内容如下在hdfs绝对路径:/user/hive/warehouse/mytest.db/下有一张表test_001,建表语句如下:createta
ble
test
Wu_Candy
·
2024-08-28 18:22
大数据测试
hive
hadoop
hdfs
【MySQL】MyISAM Static 与 MyISAM Dynamic 的区别
CREATETA
BLE
static_ta
ble
(idINT,nameCHAR(50)--固定长度)ENGINE=MyISAM;MyISAMDynamic:表的每一行大小是可变的。适合存储不同长度的数据
率真的瓜子
·
2024-08-28 18:22
mysql
数据库
java
常见的列类型
2147483647intunsigned表示无符号的整数类型,取值范围:0~4294967295int(5)zerofill仅用于显示,当不满足5位时,按照左边补零,满足时正常显示mysql>createta
ble
int_t
阿龙的代码在报错
·
2024-08-28 17:47
MySQL
入门
mysql
关于vcruntime140.dll找不到的详细解决方法分析,一键修复vcruntime140.dll
这通常发生在尝试运行依赖于MicrosoftVisualC++2015Redistributa
ble
的程序时。
电脑修复X
·
2024-08-28 16:40
电脑故障修复
dll丢失
dll文件
电脑程序故障
dll
关于el-ta
ble
的扩展表格expand
一、修改el-ta
ble
的扩展表格expand图标所在列的宽度正常用width修改即可,默认不给width有时候会很宽。
lemontree-xy
·
2024-08-28 16:40
前端
javascript
vue.js
Vue3+TS Element Plus 中Ta
ble
同时只能展开一行且能关闭
el-ta
ble
有展开行功能,但是展开多行并不好看,所以需要设置expand只展开一行,用expand-change可以实现。
lemontree-xy
·
2024-08-28 16:40
vue.js
前端
javascript
第三十三天学习笔记
配置主数据库[root@msater_5~]#systemctlstopfilewalld[root@msater_5~]#setenforce0[root@msater_5~]#systemctldisa
ble
filewalld
神效的枫叶c
·
2024-08-28 16:09
学习
笔记
adb
回文子串问题梳理
https://leetcode.cn/pro
ble
ms/palindromic-substrings/https://leetcode.cn/pro
ble
ms/longest-palindromic-subsequence
灵海之森
·
2024-08-28 16:09
算法
python
MYSQL优化相关
运维完成)对mysql配置参数进行优化(my.cnf),此优化需要进行压力测试进行参数调整建表时的优化对sql语句的优化一、mysql参数优化mysql默认最大连接数为100,查看命令:showvaria
ble
slike'max_connections
peanut___
·
2024-08-28 16:58
vue element-ui表格ta
ble
表格动态 添加行、删除行、添加列、删除列 自定义表头
vueta
ble
表格动态添加行、删除行、添加列、删除列自定义表头;增加一行、删除一行、添加一列、删除一列;每行带输入框input代码1、HTML部分:删除列删除行增加行增加列2、JS部分:exportdefault
哆啦唉m
·
2024-08-28 15:04
vue.js
ui
elementui
前端
javascript
HTML5+CSS:Flex属性的应用
Flex是Flexi
ble
Box的缩写,意为”弹性布局”,用来为盒状模型提供最大的灵活性。任何一个容器都可以指定为Flex布局。.
垦利不
·
2024-08-28 15:04
css
html5
css3
C# Dictionary
目录Dictionary的本质申明增删查改遍历练习Dictionary的本质可以将Dictionary理解为拥有泛型的Hashta
ble
它也是基于键的哈希代码组织起来的键/值对键值对类型从Hashta
ble
躺下睡觉~
·
2024-08-28 14:31
c#
java
开发语言
演讲稿——Acres of Diamonds(Russell Conwell)
WhengoingdowntheTigrisandEuphratesriversmanyyearsagowithapartyofEnglishtravelersIfoundmyselfunderthedirectionofanoldArabguidewhomwehiredupatBaghdad,andIhaveoftenthoughthowthatguideresem
ble
dourbarbersi
R_est
·
2024-08-28 14:24
使用Map接口的实现类完成员工工资(姓名--工资)的摸拟
5.使用Map接口的实现类完成员工工资(姓名–工资)的摸拟:key---姓名Stringvalue--工资Dou
ble
1)添加几条信息2)列出所有的员工姓名3列出所有员工姓名及其工资4)删除名叫“Tom
淘气小姑娘
·
2024-08-28 13:19
java
map
圣雄甘地改变世界的十句话
A'No'utteredfromthedeepestconvictionisbetterthana'Yes'merelyutteredtoplease,orworse,toavoidtrou
ble
.A'No'utteredfromthedeepestconvictionisbetterthana'Yes'merelyutteredtoplease
dyuare
·
2024-08-28 12:21
explain for mysql_MySQL EXPLAIN 完全解读
格式如下:{EXPLAIN|DESCRIBE|DESC}tbl_name[col_name|wild]{EXPLAIN|DESCRIBE|DESC}[explain_type]{explaina
ble
_stmt
Huigr王
·
2024-08-28 12:15
explain
for
mysql
django学习入门系列之第九点《MySQL命令介绍二》
文章目录数据类型整形(整数)浮点(小数)字符串时间往期回顾数据类型整形(整数)tinyint有符号,取值范围:-128~127[默认有符号]无符号,取值范围:0~255createta
ble
tb1(idintnotnullauto_incrementprimarykey
铁匠匠匠
·
2024-08-28 12:14
django
django
学习
mysql
笔记
python
前端框架
后端
pdfmake不能设置表格边框颜色?
找到pdfmake>build>pdfmake.js中:找到定义的“Ta
ble
Processor.prototype.drawVerticalLine”和“Ta
ble
Processor.prototype.drawHorizontalLine
智商不够_熬夜来凑
·
2024-08-28 11:07
javascript
前端
开发语言
WPF DataGrid 数据绑定
前台代码需要安装引用Microsoft.Xaml.Behaviors.Wpfxmlns:i="http://schemas.microsoft.com/xaml/behaviors"后台代码//数据源Observa
ble
Collection_mylist
舟渊
·
2024-08-28 10:35
C#
wpf
Python中PDF文件的编辑与创建
目录安装必要的库编辑现有PDF文件合并PDF文件拆分PDF文件添加水印注意创建新的PDF文件使用reportlab创建PDF使用Spire.PDFforPython创建PDF结论在数字化办公和学习环境中,PDF(Porta
ble
DocumentFormat
傻啦嘿哟
·
2024-08-28 10:34
python办公自动化
python
开发语言
NSMuta
ble
AttributedString/NSAttributedString 富文本设置
stackoverflow.com/questions/11031623/how-can-i-use-attributedtext-in-uilabel一、设置UILabel的属性attributedText(NSMuta
ble
AttributedString
linshaoquan
·
2024-08-28 08:53
开发技巧
ios开发
label
string
nsstring
objective-c
(18)时序收敛专题--->原则十八
1.1.3FPGA简介FPGA(FieldProgramma
ble
GateArray)是在PAL、GAL等可编程器件的基础上进一步发展的产物。它
宁静致远dream
·
2024-08-28 07:18
FPGA积沙成塔
fpga开发
FPGA
IC
C语言基础:二级指针和函数指针
1二级指针在C语言中,二级指针(Dou
ble
Pointer)是指向指针的指针。二级指针在处理复杂数据结构、动态内存分配和函数参数传递等场景中非常有用。
况之嘉禾
·
2024-08-28 07:15
C语言基础
c语言
linux
C++:Github开源7.8Kstar的线程池介绍
ThreadPool类的定义1.std::vectorworkers;2.std::queue>tasks;3.std::mutexqueue_mutex;4.std::condition_varia
ble
condition
Thomas_Lbw
·
2024-08-28 06:41
c++
c++
github
开源
线程池
DataTa
ble
数据分页
代码如下://测试分页数据DataTa
ble
dtyhdd;publicvoidChushyhdd(){dtyhdd=newDataTa
ble
();dtyhdd.Columns.Add("ddno",typeof
code_li
·
2024-08-28 05:02
数据分页
C#
c#
分页
索引
图片转换二进制流-二进制流转换图片保存(winform、Wince程序通用)
newBitmap(Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase.ToString())+"\\CheckTa
ble
code_li
·
2024-08-28 05:32
C#
Mr. L 的ScalersTalk第五轮《新概念》朗读持续力训练 Day46 - 20191125
2019-11-25,startingat2019-10-11新概念英语第二册Lesson46:Expensiveanduncomforta
ble
WhenaplanefromLondonarrivedatSydneyairport
未名之殇_
·
2024-08-28 05:56
VirtualBox 安装增强功能报错:Una
ble
to insert the virtual optical disk /Applications/VirtualBox.app/Conten...
VirtualBox中很多功能需要安装增强功能,在使用过程,安装增强功能会报下面的错误:Una
ble
toinsertthevirtualopticaldisk/Applications/VirtualBox.app
MistyL
·
2024-08-28 04:37
oracle decode函数什么意思,oracle decode函数的用法
setautotracetraceonlyselectdecode(database_role,'PRIMARY',(selecttrunc((size_MB-free_MB)*100/maxsize_MB)"retvalue"from(selectta
ble
spac
weixin_39989949
·
2024-08-28 04:22
oracle
decode函数什么意思
Sta
ble
Diffusion
Sta
ble
Diffusion是一种基于深度学习的文本到图像生成模型,其原理主要基于扩散模型(DiffusionModel)的变体,即潜在扩散模型(LatentDiffusionModel,LDM)。
Covirtue
·
2024-08-28 03:18
人工智能
python
stable
diffusion
【ASP】asp中按条件获取表字段值的自定义函数(笔记自己用)
GetTa
ble
Value:表名,字段名,条件jie=GetTa
ble
Value("sk_R","jien","ID='"&ID&"'andde='"&de&"'")
敦厚的曹操
·
2024-08-28 03:47
19.【Asp】
笔记
java
前端
Shell编程规范与变量:详解环境变量、位置变量与预定义变量
文章目录环境变量、位置变量与预定义变量环境变量位置变量(PositionalVaria
ble
s)预定义变量(和双引号的用法)环境变量、位置变量与预定义变量环境变量由系统维护,用于设置工作环境、配置系统行为
shyuu_
·
2024-08-28 02:15
网络
运维
服务器
云计算
centos
linux
unix
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