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BLE低功耗蓝牙技术
如何优雅的使用Optional类?
//遍历打印 userListfor (UserInfo userInfo : Optional.ofNulla
ble
(userList).orElse(new ArrayList
程序员蜗牛g
·
2024-09-03 23:55
springboot
java
开发语言
windows安装Docker的步骤
执行以下命令以启用WSL和虚拟机功能:dism.exe/online/ena
ble
-feature/featurename:Microsoft-Windows-Subsystem-Linux/all/norestartdism.exe
迷途小码农零零发
·
2024-09-03 22:23
配置安装
windows
docker
容器
2020-09-24 mac安装npm包系统无权限问题
from=singlemessage禁用SIP方法重启系统,按住Command+R进入恢复模式点击顶部菜单栏实用工具中的终端csrutildisa
ble
输出Successfullydisa
ble
dSystemIntegrityProtection.Pleaserestartthemachineforthechang
猴子也吃泡泡糖
·
2024-09-03 22:28
使用变长的参数列
使用变长的参数列使用变长的参数列文章目录使用变长的参数列/*程序名:fig14_02.c*//*使用变长的参数列*/#include//标准输入输出头文件#include/*计算平均值*/dou
ble
average
zhyjhacker
·
2024-09-03 21:47
C
C++答疑知识汇总
windows
服务器
linux
深入理解DDQN
深入理解DDQN1.引言双深度Q网络(Dou
ble
DeepQ-Network,DDQN)是对原始DQN算法的一个重要改进。本文将帮助你深入理解DDQN的核心概念,并通过一个生动的例子来阐释其工作原理。
AI-星辰
·
2024-09-03 21:46
动手实现强化学习
python
机器学习
人工智能
mysql基础知识
数据类型主要包括以下五大类:整数类型:BIT、BOOL、TINYINT、SMALLINT、MEDIUMINT、INT、BIGINT浮点数类型:FLOAT、DOU
BLE
、DECIMAL字符串类型:CHAR
懒人w
·
2024-09-03 21:15
#
数据库
mysql
数据库
代码随想录算法训练营第三十二天(动态规划 一)
动态规划的解题步骤(动归五部曲)确定dp数组(dpta
ble
)以及下标的含义确定递推公式dp数组如何初始化确定遍历顺序举例推导dp数组一些建议与解惑一些同学
map1e_zjc
·
2024-09-03 21:13
算法
动态规划
c++
leetcode
C#语言基础速成Day07
||Day07C#常见数据结构:1.集合(Collection)1.1**List**1.2**HashSet**1.3**LinkedList**1.4**Observa
ble
Collection**
blaizeer
·
2024-09-03 20:11
C#
c#
windows
开发语言
算法
代码随想录算法训练营第三十四天(动态规划 二)
思路:动规五部曲:1.确定dp数组(dpta
ble
)以及下标的含义dp[i][j]:表示从(0,0)出发,到(i,j)有dp[i]
map1e_zjc
·
2024-09-03 20:40
动态规划
算法
c++
leetcode
【openGauss5.0.0版本】分区表新增的特性 - 示例
openGauss5.0.0版本中,List和range分区新增功能如下:List分区键最大数由1扩展为16列:createta
ble
tp16(c1int,c2int,c3int,c4int,c5int
若兰幽竹
·
2024-09-03 20:35
openGauss
openGauss
云计算day38
⼀、编排分类单机容器编排:docker-compose容器集群编排:dockerswarm、mesos+marathon、kubernetes应⽤编排:ansi
ble
(模块,剧本,⻆⾊)⼆、系统管理进化史
巭氼
·
2024-09-03 19:35
云计算
ansi
ble
自动化运维项目
在自动化运维中,Ansi
ble
是一种强大的工具,它通过无代理的方式来管理配置、部署应用程序和编排复杂任务。
iangyu
·
2024-09-03 19:34
运维
java的catch(Throwa
ble
e)和catch (Exception e)的区别
java的catch(Throwa
ble
e)和catch(Exceptione)的区别以下内容由通义千问2.5提供在Java中,catch(Throwa
ble
e)和catch(Exceptione)都是用来捕获异常的
橙-极纪元JJY.Cheng
·
2024-09-03 19:32
java
java
Throwable
Exception
dubbo报错:not support none serializa
ble
class org.springframework.security.web.servletapi.HttpServlet3
Dubbo报错提示notsupportnoneserializa
ble
class表示Dubbo在尝试序列化某个对象时遇到了问题。
JH3073
·
2024-09-03 18:57
dubbo
chapter06_渲染Web视图_3_使用Apache Tiles视图定义布局
Spring提供视图解析器TilesViewResolver用于支持ApacheTiles配置Tiles视图解析器(1)需要添加几个Bean示例WebConfig.java@Configuration@Ena
ble
WebMvc
米都都
·
2024-09-03 17:32
JAVA 手机部件功耗计算
要求如下:1.创建一个ComputePower接口,接口中有方法:dou
ble
computePower();2.创建两个类Chip、Discrete,这些类都实现了ComputePower接口,能够提供功耗
西柚第一深情jq
·
2024-09-03 17:53
java
java
智能手机
开发语言
浮点数相关精度输出问题
正常输出浮点数dou
ble
d=1234.567890;NSString*strD1=[NSStringstringWithFormat:@"%f",d];//结果为@"1234.567890"NSString
大写的空气
·
2024-09-03 17:48
2018-06-06 设计用的iMac字体太多导致ps和excel 2016崩溃
关于macOS字体库的两篇文章如下:http://www.dummies.com/software/microsoft-office-for-mac/how-to-disa
ble
-duplicate-fonts-in-office
五大RobertWu伍洋
·
2024-09-03 17:44
vue+elementui+mybatis-plus实现分页
scope.row.rolename}}权限修改封停账号//下面这个组件是页数的组件constaxios=require('axios');exportdefault{data(){return{ta
ble
Data
一抹清风似少年
·
2024-09-03 16:49
elementui
vue.js
前端
Java快速入门 知识精简(7)常用类
该包里面的Runna
ble
接口和Object、Math、String、StringBuffer、System、Thread、Throwa
ble
类需要重点掌握,因为它们应用很广。
Tangy范
·
2024-09-03 16:19
Java
java
开发语言
Java 快速入门 知识精简(2)基础知识-关键字
用于定义数据类型的关键字:类的类型定义classinterfaceenum方法返回值的类型定义void数据类型定义byteshortintlongfloatdou
ble
charbooleanpublicclassMyClass
Tangy范
·
2024-09-03 16:18
Java
java
介绍一下SOME/IP 的Session handing功能
SOME/IP(Scala
ble
service-OrientedMiddlewarEoverIP)协议中的会话处理功能(SessionHandling)是确保消息传递可靠性和顺序的重要机制。
aFakeProgramer
·
2024-09-03 16:44
SOME/IP精华学习笔记
网络协议
2022版 Tangi
ble
Software Solutions 功能齐全的源代码转换器
2022版Tangi
ble
SoftwareSolutions功能齐全的源代码转换器Tangi
ble
SoftwareSolutions是功能齐全的源代码转换器,提供多个工具,自由选择和安装,方便在VB.NET
中游鱼
·
2024-09-03 15:10
原创
VB
C#
源代码转换
源代码迁移
flex子元素固定宽度被压缩,flex为1的宽度超出父元素显示不全
当父元素的宽度为flex,子元素一个是固定宽度,一个宽度自适应占据剩下的100%时(ta
ble
),变化页面宽度,会出现固定宽度被压缩,表格宽度超出固定宽度元素增加属性flex-shrink:0自适应宽度
aleluye
·
2024-09-03 15:05
前端
javascript
css
MySQL----约束
主键一定是非空和唯一建表时设置主键约束第一种创建方式createta
ble
goods_type(good_type_idnumber(10),good_ty
G_A34
·
2024-09-03 15:04
sql
layui 树形表格
最近的一个项目,用layui里的表格要实现树形表格功能,去官网查找没有,最后在网上找了一位大神开发的插件—treeTa
ble
。
小贵子的博客
·
2024-09-03 14:03
layui
树形表格
一篇文带你使用js实现拖拽排序
想要启用drag,只要给元素加上dragga
ble
="true"就行了(Safari5.1.2除外)。
她说她一如既往的爱我
·
2024-09-03 14:02
javascript
开发语言
ecmascript
twilio+python拨打网上电话
Downloadthehelperlibraryfromhttps://www.twilio.com/docs/python/installimportosfromtwilio.restimportClient#Setenvironmentvaria
ble
sforyourcredentials
fc&&fl
·
2024-09-03 14:01
一些杂七杂八的记录
python
开发语言
hive学习(五)
一、hive的DML操作1.load(向表中装载数据)hive>loaddata[local]inpath'路径'[overwrite]intota
ble
表名[partition(partcol1=val1
2301_79721847
·
2024-09-03 14:00
hive
学习
hadoop
Flutter控件之 Text
//none不显示装饰线条,underline字体下方,overline字体上方,lineThrough穿过文字decoration:TextDecoration.none,//solid直线,dou
ble
眼中有码
·
2024-09-03 14:56
少走弯路,ESP32 读取Micro SD(TF)播放mp3的坑路历程。
读取自己打的SD卡已经踩了无数坑了,详情见:少走弯路,ESP32使用MicroSD(TF)的经验说明-CSDN博客在好不容易解决了SD卡用1线sdmmc读取的问题,遇到了惊天大雷,esp32s3只支持
ble
5.0
platform
·
2024-09-03 14:58
ESP32
技术是什么
Arduino
esp32
蓝牙
歌词
leetcode 74. 搜索二维矩阵(java)
搜索二维矩阵leetcode74.搜索二维矩阵题目描述抽象BST代码演示抽象BSTleetcode74.搜索二维矩阵来源:力扣(LeetCode)链接:https://leetcode.cn/pro
ble
ms
SP_1024
·
2024-09-03 14:56
算法
java
数据结构
leetcode
矩阵
java
算法
职场和发展
数据结构
哈希表算法详解
哈希表哈希表(Hashta
ble
,也叫散列表),是根据关键码值(Keyvalue)而直接进行访问的数据结构。也就是说,它通过把关键码值映射到表中一个位置来访问记录,以加快查找的速度。
真的没事鸭
·
2024-09-03 13:54
数据结构与算法
散列表
算法
哈希算法
Plane Mobile 开源项目教程
LinearandHeightAlternative.Planehelpsyoutrackyourissues,epics,andproductroadmapsinthesimplestwaypossi
ble
高慈鹃Faye
·
2024-09-03 13:21
(170)时序收敛--->(20)时序收敛二十
1目录(a)FPGA简介(b)Verilog简介(c)时钟简介(d)时序收敛二十(e)结束1FPGA简介(a)FPGA(FieldProgramma
ble
GateArray)是在PAL(可编程阵列逻辑)
FPGA系统设计指南针
·
2024-09-03 13:50
FPGA系统设计(内训)
fpga开发
时序收敛
hive学习(四)
一、分区表的数据导入1.静态分区(需要手动指定分区字段的值)直接将文件数据导入到分区表语法:loaddata[local]inpath'filepath'intota
ble
ta
ble
namepartition
2301_79721847
·
2024-09-03 12:16
hive
学习
hadoop
数据结构 哈希表 五大排序算法 二分查找(折半查找)
(哈希碰撞):多个数据通过哈希算法映射成同一个键值#include#include#include#include"list.h"#defineINDEX10structlist_headhashta
ble
安亿103
·
2024-09-03 11:45
数据结构
排序算法
c语言
linux
软件构建
算法
解决mfc140u.dll丢失的问题,四个方面进行详细解决mfc140u.dll丢失的方法步骤教程
mfc140u.dll丢失可能导致某些应用程序无法正常运行,特别是那些依赖VisualC++Redistributa
ble
和MFC库的程序。
szcsd123456789
·
2024-09-03 11:10
dll丢失
dll文件
dll修复工具
dll修复
dll
每日英语单词学习 @2023-01-18
第1组anniversary周年纪念日devastating破坏性极大的commemoration纪念仪式gorge峡谷;咽喉;狼吞虎咽onlooker旁观者ravine沟壑;峡谷第2组compati
ble
Hedgehoginwind
·
2024-09-03 10:20
Java报错处理系列之:Una
ble
to make protected void java.util.ResourceBundle.setParent
Java报错处理系列之:Internalerror:Una
ble
tomakeprotectedvoidjava.util.ResourceBundle.setParentaccessi
ble
:modulejava.basedoesnot"opensjava.util"tounnamedmodule
快乐骑行^_^
·
2024-09-03 10:37
日常分享专栏
java
浅谈MQTT
MQTT协议在物联网(IoT)领域非常流行,因为它能够支持大量的设备连接,并且具有
低功耗
和低带宽消耗的特点。二、关键特点轻量级:MQTT协议的消息头部很小,这使得它非常适合带宽有限的环境。
CN.LG
·
2024-09-03 09:32
Python
php
开发语言
面试题(13)
__interruptdou
ble
compute_area(dou
ble
radius){dou
ble
area=PI
月夕花晨374
·
2024-09-03 09:29
算法
数据结构
java
链表
开发语言
移情别恋c++ ദ്ദി˶ー̀֊ー́ ) ——9.模板进阶
1.非类型模板参数之前所使用的模板参数都是用来匹配不同的类型,如int、dou
ble
、Date等,模板参数除了可以匹配类型外,还可以匹配常量(非类型)我们知道模板参数分为:类型形参与非类型形参类型模板形参
码码生的
·
2024-09-03 09:57
c++
开发语言
前端echarts地图3D效果+点击地域出现弹出框可以有确定取消操作
/assets/jiangsu.js";import"echarts-gl";exportdefault{data(){return{centerDialogVisi
ble
:false,};},mounted
小小红色无花果
·
2024-09-03 09:55
echarts
echarts
前端
javascript
三观超正的励志文案
Workinghardtoimproveyourselfismorerelia
ble
thanrelgingonothers会过去的会到来的会拥有的。
Dimples甜
·
2024-09-03 08:35
数据结构---五大排序---哈希表---二分查找法
哈希表结构的定义2.2.初始化哈希表2.3.插入元素2.4.打印哈希表2.5.查找元素2.6.销毁哈希表三、二分查找法(折半查找法)一、五大排序1.1.冒泡排序时间复杂度:o(n^2)稳定性:稳定intBub
ble
Sort
踢球的程序猿
·
2024-09-03 08:49
数据结构
散列表
排序算法
【element-UI】el-ta
ble
底部新增一栏不规则合计(小计)
el-ta
ble
底部新增一栏不规则合计(小计)项目需求:需要在指定列下方最后一行新增显示合计数目,只在指定的列下方显示单元格,即不规则合计需求效果如下图:解决过程利用el-ta
ble
中提供的ta
ble
-slot
wasin_lu
·
2024-09-03 07:48
Element-UI
ui
javascript
vue.js
vue Element-ui el-ta
ble
合计行样式自定义、不换行显示
本项目由于合计汇总数字太多太长,又不能改变原width的情况下,就自定义样式超出点点点了,又要鼠标悬浮看全。js(设置‘title’)配合css(不换行)watch:{//loading为v-loadingloading(bool){!bool&&setTimeout(()=>{constnodeList=this.footerTr||[]nodeList.forEach<
一撇一画
·
2024-09-03 07:47
笔记
vue.js
html
javascript
el-ta
ble
合计 指定列
1、在el-ta
ble
中添加show-summary:summary-method="getSummaries"2.在methods中添加getSummaries()方法//指定列求和getSummaries
南笙浅巷墨汐°
·
2024-09-03 07:47
Javascript
javascript
elementui
前端
elementui el-ta
ble
合计栏计算保留千分位
getSummaries(param){const{columns,data}=param;constsums=[];columns.forEach((column,index)=>{if(index===0){sums[index]='合计';return;}//if(index===2||index===3||index===4||index===5||index===6){if(index=
·
2024-09-03 07:47
javascript
开发语言
ecmascript
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