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ble蓝牙4.0
C++ 接口(抽象类)
纯虚函数是通过在声明中使用"=0"来指定的,如下所示:classBox{public://纯虚函数virtualdou
ble
getVolume()=0;private:dou
ble
阳光向日葵向阳
·
2025-03-16 11:03
c++
开发语言
MacOS在matlab中使用dir时,总是出现“._”文件的解决方法
_"文件的原因是macOS自动创建隐藏的元数据文件(AppleDou
ble
格式),特别是在文件被复制到非macOS文件系统(如外接硬盘、U盘、网络共享盘)时。(1)为什么会出现"._"文件?
我是水怪的哥
·
2025-03-16 10:59
经验分享
Matlab
macos
经验分享
13.ansi
ble
-playbook批量部署mysql/apache和http报文状态码
文章目录一、ansi
ble
-playbook实现MySQL的二进制部署二、Ansi
ble
playbook实现apache批量部署三、http的报文结构和状态码总结3.1报文结构3.2状态码一、ansi
ble
-playbook
江小宝
·
2025-03-16 09:23
mysql
apache
http
Linux书签上下移动
书签文件路径mainwindow.hconstQStringfilepath_bookmark=QStandardPaths::writa
ble
Location(QStandardPa
海天鹰
·
2025-03-16 09:52
Qt
qt
商场促销-策略模式
核心代码如下:importjava.util.Scanner;publicclassMain{privatestaticdou
ble
total=0;publicstaticvoidmain(String
WispX888
·
2025-03-16 07:37
java
开发语言
学习
设计模式
hive sql报错
:ParseExceptionline22:0cannotrecognizeinputnear''''''insubquerysource2.解决select*from(select...fromta
ble
进一步有进一步的欢喜
·
2025-03-16 06:04
大数据
Hive
SQL
精进系列
开源框架--Glide源码阅读下
上半部分分析知道了with()方法返回的是RequestManager,下面看RequestManager的load()方法,@OverridepublicRequestBuilderload(@Nulla
ble
Stringstring
Bonnie_cat
·
2025-03-16 06:32
开源
glide
AtCoder Beginner Contest 275 A-D题解
AtCoderBeginnerContest275A-FindTakahashi找出最大的元素并输出下标使用两个变量一个存储当前找到的最大值一个存储找到的最大值对应的下标,若当前数大于最大值更新最大值和下标AC代码//Pro
ble
m
Gowilli
·
2025-03-16 06:29
AtCoder
c++
算法
数据结构
大模型的webui
exportXXX_LLM_C=~/xcore-llm/build/ReleaseexportCUDA_VISI
BLE
_DEVICES=2,3exportCUDACXX=/usr/local/cuda-
Zain Lau
·
2025-03-16 05:26
人工智能
python
昇腾
Ascend
天数
自动同步多服务器下SQL脚本3.0
数据表CREATETA
BLE
`auto_sql_version`(`id`intNOTNULLAUTO_INCREMENT,`version`varchar(20)CHARACTERSETutf8mb4COLLATEutf8mb4
a栋栋栋
·
2025-03-16 05:26
遇到的问题
sql
自动化
事务失效
mysql安装启动报错_mysql安装/启动报错汇总
mysql_install_db--user=mysql--basedir=/usr/local/mysql/--datadir=/data/mysqldb/InstallingMySQLsystemta
ble
s
weixin_29179583
·
2025-03-16 04:18
mysql安装启动报错
nvm日常使用中常用命令总结
:nvmlistavaila
ble
如果你想查看特定版本,可以使用grep进行过滤,例如:nvmlistavaila
ble
|grep
上趣工作室
·
2025-03-16 02:03
vue2.x
vue3.x
vue.js
前端
javascript
C++面向对象三大特性
#includeclassBankAccount{private:dou
ble
balance;//私有成员变量,外部无法直接访问public://构造函数,用于初始化账户余额BankAccount(do
CodeCuriosity
·
2025-03-16 02:01
C++
c++
开发语言
Fatal Python error: initfsencoding: una
ble
to load the file system codec
FatalPythonerror:initfsencoding:una
ble
toloadthefilesystemcodecModuleNotFoundError:Nomodulenamed'encodings'Currentthread0x00007668
珞珈山小裁缝11-8
·
2025-03-16 00:51
python
PyCharm报错—Fatal Python error : una
ble
to load the file system codec
报错窗口如下:找了很多方法,发现只有这个可以,帮大家避雷!第一步:第二步:选择你最新安装的可用的python.exe所在路径最后就可以看到可以正常运行啦!
萧念莳
·
2025-03-16 00:19
日常问题集锦
pycharm
蓝桥杯好题推荐---子集
个人主页:羽晨同学个人格言:“成为自己未来的主人~”题目链接78.子集-力扣(LeetCode)https://leetcode.cn/pro
ble
ms/subsets/description/解题思路在这道题目当中
羽晨同学
·
2025-03-16 00:18
蓝桥杯C++组
蓝桥杯
职场和发展
深度解析A/B测试中的哈希分桶策略:从原理到实战的流量分层方案
一、技术原理与数学基础1.1哈希分桶的核心机制核心公式:桶编号=Hash(用户ID+实验层种子)modN基于**双重哈希(Dou
ble
Hashing)**实现流量的完全正交切割:{∀u∈U,Layerij
燃灯工作室
·
2025-03-15 23:42
Python
哈希算法
算法
77.HarmonyOS NEXT ImageViewerView 组件深度剖析: Swiper容器与懒加载深度解析
HarmonyOSNEXTImageViewerView组件深度剖析:Swiper容器与懒加载深度解析一、组件基础结构@ComponentexportstructImageViewerViewComponent{//状态管理@StateisEna
ble
Swip
·
2025-03-15 23:43
harmonyos-next
CSS伸缩盒模型(弹性盒子)
伸缩盒模型(Flexbox,Flexi
ble
BoxLayout)是CSS中一种一维布局模型,用于更高效地处理元素的对齐、分布和响应式布局。
申朝先生
·
2025-03-15 23:39
css
前端
C语言刷题第三章(中)
(4)示例:输入:608090输出:score1=60,score2=80,score3=90(5)代码样例:方法一:#includeintmain(){dou
ble
s1,s2,s3;s
乞丐1469
·
2025-03-15 22:05
C语言刷题
c语言
算法
Three.js 阴影 (Shadow) 知识点整理
renderer.shadowMap.ena
ble
d=true✅:全局开启阴影渲染。rende
泫凝
·
2025-03-15 22:34
javascript
three.js
npm
前端
2024最新版头歌实践教学平台数据库原理与应用实训答案
h127.0.0.1createdatabaseMyDb;showdatabases;第2关:创建表mysql-uroot-p123123-h127.0.0.1createdatabaseTestDb;createta
ble
t_emp
泠波
·
2025-03-15 21:28
数据库
MMD模型及动作一键完美导入UE5-
Ble
nder方案(三)
1、下载并安装
ble
nder_mmd_tools插件1、下载并安装
Ble
nder,
Ble
nder,下载
Ble
nder3.6,下载太新的版本可能会跟
ble
nder_mmd_tools不匹配2、github
tangfuling1991
·
2025-03-15 21:26
UE4移动端Android
iOS入门
ue5
blender
MMD
模型动作
Ble
nder布料模拟:衣物与织物_2024-07-15_10-44-29.Tex
Ble
nder布料模拟:衣物与织物
Ble
nder基础设置安装与配置
Ble
nder安装
Ble
nder访问
Ble
nder官方网站下载适合您操作系统的版本。
chenjj4003
·
2025-03-15 21:24
游戏开发
blender
材质
3dsmax
vr
贴图
谷歌Chrome或微软Edge浏览器修改网页任意内容
在谷歌或微软浏览器按F12,打开开发者工具,切换到console选项卡:在下面的输入行输入下面的命令回车:document.body.contentEdita
ble
="true"效果如下:
驯龙高手_追风
·
2025-03-15 21:23
杂文集
chrome
edge
前端
线程、多线程以及线程池的关系与用法
实现Runna
ble
接口。实现Calla
ble
接口(带返回值)。特点:每个线程独立运行,共享进程资源。
mjr
·
2025-03-15 20:50
java
开发语言
高级线程管理_第九章_《C++并发编程实战》笔记
高级线程管理1.线程池(ThreadPool)1.1线程池结构要素1.2线程池实现步骤2.线程中断(Interrupti
ble
Threads)2.1中断机制实现多选题多选题答案设计题目设计题目答案1.线程池
郭涤生
·
2025-03-15 20:48
#
并发线程
c/c++
c++
并发编程
贪心算法--将数组和减半的最小操作数
可以用优先队列来存储这些数组元素每次取出最值,减半后再放入优先队列中,操作次数+1,直到数组和小于等于原总和的一半代码:classSolution{public:inthalveArray(vector&nums){dou
ble
sum
4C++
·
2025-03-15 20:48
数据结构与算法
贪心算法
算法
String类型为什么不可变
在大多数编程语言(如Java、Python、C#等)中,String类型被设计为不可变(Immuta
ble
),这意味着一旦一个字符串对象被创建,它的值就不能被修改。
27xixi
·
2025-03-15 19:45
java高频
java
Flet 项目常见问题解决方案
Flet项目常见问题解决方案fletFletena
ble
sdeveloperstoeasilybuildrealtimeweb,mobileanddesktopappsinPython.Nofrontendexperiencerequired
龙香令Beatrice
·
2025-03-15 19:44
Flet 框架教程
Flet框架教程fletFletena
ble
sdeveloperstoeasilybuildrealtimeweb,mobileanddesktopappsinPython.Nofrontendexperiencerequired
樊贝路Strawberry
·
2025-03-15 19:14
c++成绩排名
编写一个学生类,包含学号(string)、姓名(string)和成绩(dou
ble
)三个私有属性,以及设置姓名、学号和成绩值,获得成绩值,输出姓名、学号和成绩等的公有成员函数。
vir02
·
2025-03-15 18:36
c++
c++
算法
scaled_dot_product_attention实现逻辑
torch.nn.functional.scaled_dot_product_attention(query,key,value,attn_mask=None,dropout_p=0.0,is_causal=False,scale=None,ena
ble
_gqa
凤梧长宜放眼量
·
2025-03-15 17:27
人工智能
深度学习
计算机视觉
torch.logical_and()方法
零被视为False,非零被视为True官方文档说明:https://pytorch.org/docs/sta
ble
/generated/torch.logical_and.html#torch.logical_andtorch.logical_and
CodeWang_NC
·
2025-03-15 17:56
pytorch
深度学习
python
Orin NX 安装Jetpack 6.2 及部署pytorch tips
刷机tips:刷完系统之后,如果需要安装其它软件,这个时候不需要跳线,然后输入真实的IP,确保你的x86ubuntu能ping通OrinNX.其它安装环境时遇到的问题如下:1.GPUena
ble
=False-installtorch
MYVision_ MY视界
·
2025-03-15 17:23
Python
pytorch
人工智能
python
打造高性能的react
shouldComponentUpdate规避冗余的更新逻辑shouldComponentUpdate触发的条件是只要父组件更新了,就会被触发,在里面判断传入的pros是否改变,不变则返回falsePureComponent+Immuta
ble
.jsPureComponent
大鸡腿最好吃
·
2025-03-15 16:48
react.js
MVVM架构在Android中的DataBinding实现案例
实例中包括了MVVM架构的核心概念,以及如何使用表达式语言、Observa
ble
对象、BindingAdapter、Layout文件和DataBindingU
朱佳顺
·
2025-03-15 15:15
TypeScript:为什么应该停止使用 Enum?
1.1事情的起因TypeScript5.5引入了--erasa
ble
SyntaxOnly这个新的编译选项。作用是:强制TypeScript代码只使用“可擦除”的类型语法,即
代码里的小猫咪
·
2025-03-15 15:42
TypeScript
enum
枚举
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
BT、BT Mesh、WiFi、Zigbee技术对比分析
一、
蓝牙
(Bluetooth,BT)1.技术原理核心概念:
蓝牙
是一种短距离(10-100米)无线通信技术,采用跳频扩频(FHSS)技术,通过快速切换频段(每秒1600次)避免干扰。
莫道桑榆晚-为霞尚满天
·
2025-03-15 11:40
硬件工程
网络协议
信息与通信
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
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