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Ble
【SpringBoot】自动配置原理
以下是SpringBoot自动配置的基本原理和工作流程:通过@SpringBootConfiguration引入了@Ena
ble
AutoConfiguration(负责启动自动配置功能)@Ena
ble
AutoConfigurati
qx_java_1024
·
2024-09-07 18:26
SpringBoot
spring
boot
java
spring
day48——杂项
Lambda表达式(C++11)1.1基本概念lambda表达式相当于在函数中定义一个轻量版函数,可以直接使用,也可以赋值给其他函数指针变量使用1.2定义格式1>格式:[捕获列表](函数形参列表)[muta
ble
初夏怡情
·
2024-09-07 16:10
java
开发语言
debian10安装配置_如何在Debian 10上设置和配置证书颁发机构(CA)
debian10安装配置介绍(Introduction)ACertificateAuthority(CA)isanentityresponsi
ble
forissuingdigitalcertificatestoverifyidentitiesontheinternet.AlthoughpublicCAsareapopularchoiceforverifyingtheidentityofwebsit
cukw6666
·
2024-09-07 16:38
linux
java
python
ubuntu
大数据
python的迭代器
1.迭代:遍历集合元素的一种方式2.可迭代对象(Itera
ble
):可以用for…in…循环遍历的对象,可以逐个拿出2.1常见的可迭代对象:列表、元组、字典、集合2.2判断一个对象是可迭代对象:导入模块
(initial)
·
2024-09-07 16:38
python
python
开发语言
C++常见异常汇总(二): undefined reference to
文章目录1、undefinedreferencetoA2、undefinedreferenceto`vta
ble
2.1模版函数定义方案1:定义与实现均一起定义在头文件中2.2模版函数定义方案2:定义的同一个文件中
牛魔王的小怪兽
·
2024-09-07 15:35
C++
c++
开发语言
pyflink 自定义函数
frompyflink.datastreamimportStreamExecutionEnvironmentfrompyflink.common.typeinfoimportTypesfrompyflink.datastreamimportStreamExecutionEnvironmentfrompyflink.ta
ble
importStreamTa
ble
Environmentfrompyfli
scan724
·
2024-09-07 15:05
Flink实时计算
python
开发语言
简易版LiveData-->实现MVVM
ViewModelpackagecom.example.jetpacktest;publicclassViewModel{publicStringname;publicintcount;}二、简易的LiveData实现--命名为:Obsera
ble
Anypackagecom.examp
战国剑
·
2024-09-07 15:34
Android技巧
android
在C语言中,如何区分使用float型数据和dou
ble
型数据
在C语言中,`float`和`dou
ble
`都是用来表示浮点数的数据类型。通常情况下,可以使用`float`来表示单精度浮点数,使用`dou
ble
`来表示双精度浮点数。
1601zz
·
2024-09-07 15:34
c语言
开发语言
学习
算法
python中的deque
deque(全称为"dou
ble
-endedqueue",即双端队列)是Python的collections模块中的一个类,它提供了一个可变序列,支持从两端进行快速的添加和删除元素操作。
Freak587
·
2024-09-07 15:34
Python
python
Pyflink教程(三):自定义函数
该文章例子pyflink环境是apache-flink==1.13.6Python自定义函数是PyFlinkTa
ble
API中最重要的功能之一,其允许用户在PyFlinkTa
ble
API中使用Python
yuxj记录学习
·
2024-09-07 15:33
学习笔记
学习
pyflink
python爬取微博热搜_Python 超简单爬取微博热搜榜数据
使用开发者工具(F12)查看页面逻辑,并拿到每条热搜的CSS位置,方法如下:按照这个方法,拿到这个td标签的selector是:pl_top_realtimehot>ta
ble
>tbody>tr:nth-child
weixin_39835792
·
2024-09-07 15:03
python爬取微博热搜
dou
ble
和 float 的区别
在C语言中,float和dou
ble
都是浮点数类型,但它们有以下几点区别:精度:float是单精度浮点数,而dou
ble
是双精度浮点数。
小米人er
·
2024-09-07 15:32
我的博客
double
float
13、Flink SQL 的 时间属性 介绍
b)时间属性介绍像窗口(在Ta
ble
API和SQL)这种基于时间的操作,需要有时间信
猫猫爱吃小鱼粮
·
2024-09-07 15:59
Flink
SQL
flink
sql
大数据
pyflink中UDTF和UDF的区别
UDTF(UserDefinedTa
ble
-ValuedFunctions)和UDF(UserDefinedFunctions)在Flink和其他数据处理系统中有着明显的区别,主要体现在以下几个方面:输出类型
吉小雨
·
2024-09-07 14:58
pyflink
pyflink
Python deque
初始化队列:deque([itera
ble
[,maxlen]]))方法描述append(x)末尾添加元素appendleft(x)头部添加元素clear()清空count(x)统计元素x的个数extend
hustqb
·
2024-09-07 14:58
Python
vscode php 代码跳转
phpIntelliSense插件的安装配置php的可执行路径{"workbench.colorTheme":"DefaultLight+","window.zoomLevel":0,"php.validate.executa
ble
Path
windyboy
·
2024-09-07 14:49
探索Etherkey:网络化可编程USB键盘模拟器
探索Etherkey:网络化可编程USB键盘模拟器etherkeyEmulateaconventionalUSBkeyboardwithascripta
ble
,networkcapa
ble
microcontroller
皮静滢Annette
·
2024-09-07 14:57
深度强化学习之DQN-深度学习与强化学习的成功结合
目录概念深度学习与强化学习结合的问题DQN解决结合出现问题的办法DQN算法流程总结一、概念原因:在普通的Q-Learning中,当状态和动作空间是离散且维数不高的时候可以使用Q-Ta
ble
来存储每个状态动作对应的
CristianoC
·
2024-09-07 14:39
细节:基本数据类型中float与dou
ble
的区别
一、两者定义float:单精度浮点数dou
ble
:双精度浮点数二、两者的主要区别01)在内存中占有的字节数不同单精度浮点数在机内存占4个字节双精度浮点数在机内存占8个字节02)有效数字位数不同单精度浮点数有效数字
YJulius
·
2024-09-07 14:27
细节
java
cf973Div3E
https://codeforces.com/contest/2008/pro
ble
m/Eusingll=longlong;voidsolve(){intn;std::cin>>n;std::strings
Colinnian
·
2024-09-07 14:25
codeforces
AtCoder ABC 239题解(A ~ E)
sqrt(a)∗sqrt(b)sqrt(a*b)==sqrt(a)*sqrt(b)sqrt(a∗b)==sqrt(a)∗sqrt(b)intmain(){LLn;scanf("%lld",&n);dou
ble
res
a simple_boy
·
2024-09-07 14:25
AtCoder
算法
c++
abc365 E
abc365E-XorSigmaPro
ble
m思路本题首先可以想到用前缀异或和维护,我们记作bi=a1⊕a2⊕⋅⋅⋅⊕aib_i=a_1\oplusa_2\oplus···\oplusa_ibi=a1⊕
MGNisme
·
2024-09-07 14:24
c++
算法
PyFlink自定义函数
在PyFlink(ApacheFlink的PythonAPI)中,自定义函数分为三种主要类型:ScalarFunction(标量函数)、Ta
ble
Function(表函数)和AggregateFunction
吉小雨
·
2024-09-07 14:53
pyflink
flink
gtest filter 应用
/your_test_executa
ble
--gtest_filter=
玉梅小洋
·
2024-09-07 12:15
工具使用
C++
c++
gtest
linux自动化运维之ansi
ble
实战
ansi
ble
基础介绍优点-相比于saltatack和puppet,没有客户端,更轻量级-只是一个工具,可以很容易实现分布式拓展-更强的远程执行命令特点-模块化-支持自定义模块,可以用任何语言编写模块-
浓黑的daidai
·
2024-09-07 11:05
运维
自动化
ansible
2024年Python最全Python爬虫实战:爬取股票信息_python 获取a股所有代码(1)
doc=PyQuery(r.text)list=[]#获取所有section中a节点,并进行迭代foriindoc('.stockTa
ble
a').items():try:href=i.attr.hreflist.append
2401_84585339
·
2024-09-07 10:28
程序员
python
爬虫
windows
滚动条出现时不占用 `div` 空间
以下是实现方式:div{width:100%;height:300px;overflow-y:auto;scrollbar-gutter:sta
ble
;/*保证滚动条出现时不会改变布局*/}解释:scrollbar-gutter
昕er
·
2024-09-07 09:55
前端
SQL数据库分层模板代码(建议根据所需进行调整)
SQL数据库分层模板代码SQL分层模板代码1.CreateTa
ble
1.1ODS层建表1.2DWD层建表1.3DWS层建表1.4.ADS层建表2.CreateProcedure2.1DWD层存储过程2.2DWS
巴依老爷coder
·
2024-09-07 09:22
数据库
sql
oracle
mysql字符串函数使用方式
1.concat()可以将多列内容连接在一起或给某列数据追加内容eg:selectconcat(column1,’-’,column2)AScolfromta
ble
_name将column1和column2
m0_46429209
·
2024-09-07 09:51
mysql学习
mysql
Edi
ble
Fish 可食用鱼
DHA二十二碳六烯酸,俗称脑黄金常见的淡水鱼COMMONFRESHWATERFISH草鱼grasscarp鳙鱼bigheadcarp桂花鱼mandarinfish花斑鱼managuacichlid黄颡鱼yellowcatfish鲫鱼cruciancarp鲮鱼mudcarp罗非鱼tilapia泥鳅loach鲶鱼catfish太阳鱼bluegill乌鱼snakehead鲟鱼sturgeon鲤鱼carp
the 8th dwarf
·
2024-09-07 08:49
English
食用鱼
英语
PySpark数据分析基础:PySpark基础功能及DataFrame操作基础语法详解_pyspark rdd(1)
dfDataFrame[a:bigint,b:dou
ble
,c:string,d:date,e:timestamp]####通过由元组列表组成的RDD创建rdd=spark.sparkContext.parallelize
2401_84181368
·
2024-09-07 08:46
程序员
数据分析
数据挖掘
Mysql FLOAT和DOU
BLE
类型区别
存储方式:FLOAT和DOU
BLE
是浮点数类型,它们以二进制格式存储数值,可以存储近似值。这意味着某些特定的小数值可能无法精确表示,可能会有微小的计算误差。
u010373106
·
2024-09-07 07:40
Mysql
mysql
Go语言变量的声明
Go语言是静态类型语言,因此变量(varia
ble
)是有明确类型的,编译器也会检查变量类型的正确性。在数学概念中,变量表示没有固定值且可改变的数。
u011290064
·
2024-09-07 06:03
golang
开发语言
后端
Python运用PySide6/PyQt居然可以制作如此好看的界面——““创意解析””
PyThon运用PySide6/PyQt居然可以制作如此好看的界面——““创意解析””导语:你将获取以下知识:相关控件:QWidgetQLineEidtQTa
ble
WidgetQLabelQPushButtonQss
白日飞猪
·
2024-09-07 06:32
创意解析
python
pyqt
用户界面
ui
爬虫
pillow
react- native创建pdf
AndroidManifest.xml添加以下WRITE_EXTERNAL_STORAGE权限:使用:importReact,{Component}from'react';import{Text,Toucha
ble
Highlight
孟宪磊mxl
·
2024-09-07 05:26
react.js
pdf
前端
react
native
【Python】Python中变量或者函数加下划线‘_‘的含义
以下是一些常见的用法:单下划线前缀(_varia
ble
):私有性:单个下划线前缀的变量或函数通常用于表示“私有”的,意味着这些变量或函数不应该被外部直接访问。
读思辨
·
2024-09-07 05:52
Python
python
开发语言
ta
ble
表头固定
ta
ble
scrollingwithfixedheaderhttps://codepen.io/joshuarule/pen/rjRJog
无名程序猿
·
2024-09-07 05:51
父类是给java项目SpringCloud微服务 中SpringBoot解决继承父类后 maven标红
解决继承父类后maven标红问题:Project:org.example:SpringCloud_wfw:1.0-SNAPSHOTLocation::X:/SpringCloud_微服务/pom.xmlPro
ble
ms
不太会写
·
2024-09-07 04:18
java
spring
boot
spring
cloud
8月29号
define__class__#include#includeusingnamespacestd;classstu{private:stringname;protected:intage;public:dou
ble
score
yueduwudi
·
2024-09-07 03:43
c++
开发语言
Java面试题
它与Servlet有什么区别7、synchronized关键字8、HashTa
ble
与HashMap的区别9、ArrayList和LinkedList的区别10、Session和Cookie的区别11、
路飞Fly了
·
2024-09-07 02:08
java
面试
开发语言
mysql gtid 限制_MySQL启用GTID的限制-阿里云开发者社区
mysql>CREATETA
BLE
error(IDINT)ENGINE=MyISAM;Query
weixin_39970994
·
2024-09-07 02:05
mysql
gtid
限制
imp-00017 oracle 942,IMP导入遇到IMP-00017,ORA-00942
catparfile_imp.txtuserid="scott/tiger"file=/home/oracle/exp_lzl.dmplog=/home/oracle/imp_lzl.logbuffer=102400ta
ble
s
乐姐理财说
·
2024-09-07 01:34
imp-00017
oracle
942
mysql报错1785_MYSQL Statement violates GTID consistency: Updates to non-transactional ta
ble
s can only .
org.hibernate.engine.jdbc.spi.SqlExceptionHelper:144]StatementviolatesGTIDconsistency:Updatestonon-transactionalta
ble
scanonlybedoneineitherautocommittedstatementsorsingle-s
张观鱼
·
2024-09-07 01:34
mysql报错1785
powerdns配置
epel-release.noarch2:安装mariaDByum -y install mariadb-server mariadb3.设置服务开机启动和启动Mariadbsystemctl ena
ble
weixin_33701251
·
2024-09-07 01:03
php
数据库
运维
12c RAC扩容undo表空间
Oracle12cR1RACcolsidfora10colnamefora20colvaluefora20selectsid,name,valuefromv$spparameterwherename='undo_ta
ble
space
weixin_33721427
·
2024-09-07 01:33
数据库
oracle 扩容undo,【案例】Oracle RAC数据库undo使用率较高的解决思路办法
本站文章除注明转载外,均为本站原创:转载自lovewife&lovelife—Roger的Oracle技术博客本文链接地址:aboutUndoTa
ble
spaceusedHigh今天有朋友在问关于undo
南门居士-杜锦刚
·
2024-09-07 01:33
oracle
扩容undo
Statement violates GTID consistency: Updates to non-transactional ta
ble
s
StatementviolatesGTIDconsistency:Updatestonon-transactionalta
ble
s,canonlybedoneineitherautocommittedstatementsorsingle-statementtransactions
罗罗的1024
·
2024-09-07 01:32
Linux
问题集
mysql
linux
java
Oracle undo表空间爆满的解决
1.查找数据库的UNDO表空间名,确定当前例程正在使用的UNDO表空间:Showparameterundo_ta
ble
space。
小学生汤米
·
2024-09-07 01:29
ORACLE
ORACLE
undo
空间满
undo 表空间满了的处理方法
方法一:添加undo表空间的数据文件alterta
ble
spaceundoadddatafile'/u01/oracle/backup/undo02.dbf'size100Mreuse;方法二:切换undo
cm_0205
·
2024-09-07 01:58
数据库
Mysql:create ta
ble
... select ...报错
客户做mysql迁移,从本地mysql迁移到云mysql,结果系统报错,日志里显示StatementviolatesGTIDconsistency:CREATETA
BLE
...SELECT.就是类似的语句违反了
大道不孤,众行致远
·
2024-09-07 00:25
技术杂谈
mysql
数据库
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