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  • option相关2021-03-06 11:59:58

    java optional是Java 8 引入的特性。 解决:空指针异常(NullPointerException) 本质:这是一个包含有可选值的包装类,这意味着 Optional 类既可以含有对象也可以为空。 https://www.oschina.net/translate/understanding-accepting-and-leveraging-optional-in?lang=chs&page=2# Sca

  • 车载以太网文章总目录及链接2021-03-03 13:29:06

    车载以太网文章总目录及链接: 1、【车载以太网】【SOME/IP】(一)基于linux系统分析main()被调用原理 2、【车载以太网】【SOME/IP】(二)基于linux系统的TCP/IP连接通信实现及代码原理讲解 3、【车载以太网】【SOME/IP】(三)以太网数据包层次与结构解析 4、【车载以太网】【SOME/IP】(四)

  • HOWTO do Linux kernel development2021-03-03 08:35:43

    IntroductionSo, you want to learn how to become a Linux kernel developer? Or you have been told by your manager, “Go write a Linux driver for this device.” This document’s goal is to teach you everything you need to know to achieve this by describing the

  • 剑桥雅思写作高分范文ESSAY712021-03-02 14:01:06

    Should people doing different jobs have holidays at different time of the year? What is your opinion?   More and more people choose to avoid the holiday seasons to go traveling because tourist sites are invariably overcrowded during public holidays. To en

  • 剑桥雅思写作高分范文ESSAY672021-03-02 13:34:51

    Is it necessary to forbid smoking? State your opinion and reasons.   Despite the knowledge that smoking is a potential killer, cigarette use is on the rise in most countries. Indeed, people are lighting up at a younger age. Twenty per cent of boys in seco

  • 系统的入门脑机接口&神经科学,一个网站就够了 - NeuroTechEDU2021-03-01 22:00:49

    NeuroTechX是一个非盈利的神经科技社区,为领域内的专家和学者提供交流的平台,并且为其提供资源和学习机会,目标是促进脑机接口和神经科学的发展。 社区的专家和学者整理提供了一个学习脑机接口和神经科学的集合课程网站NeuroTechEDU(英文),能够让你系统的快速了解这个领域的基础和

  • Collection And Map Introduction2021-03-01 21:03:44

    Collection And Map Introduction Java Collections Hierarchy The Collections framework is better understood with the help of core interfaces. The collections classes implement these interfaces and provide concrete functionalities. Collection It extends Ite

  • UVA10803 Thunder Mountain【Floyd算法】2021-02-27 23:05:36

    “I mean, some people got guns, and some people got flashlights, and some people got batteries. These guys had all three.” J. Michael Straczynski, "Jeremiah." Markus is building an army to fight the evil Valhalla Sector, so he needs to move some

  • 机器学习笔记(1)---定义2021-02-22 10:34:06

    Machine  Learning definition 1) Arthur Samuel(1959 跳棋游戏)给出的定义: Field of study that gives computers the ability to learn without being explicitly programmed.(在没有明确设置的情况下,使计算机具有学习能力的研究领域 2)Tom M.Mitchell 给出的定义 A computer pr

  • Introduction of Machine Learning2021-02-20 17:35:19

    definition of Machine Learning Field of study that gives computers the ability to learn without being explicitly programmed. A computer program is said to learn from experience E with respect to some task T and some performance measure P, if its perfo

  • You may use special comments to disable some warnings.2021-02-12 19:01:33

    You may use special comments to disable some warnings. You may use special comments to disable some warnings. Use // eslint-disable-next-line to ignore the next line. Use /* eslint-disable */ to ignore all warnings in a file. 转自https://blog.csdn.net/qq

  • SOME/IP2021-02-06 16:29:24

    SOME/IP is an automotive/embedded communication protocol which supports remote procedure calls, event notifications and the underlying serialization/wire format. 特性: Serialization – transforming into and from on-wire representation.Remote Procedure Call

  • 【SOME/IP通信系列】(九)解读SOME/IP-SD服务发现协议2021-02-02 09:05:43

    目录 一、简介: 二、SOME/IP-SD报文格式: 三、EntriesArray: 四、Option类型 五、报文传输过程: 六、服务发现通信行为 七、状态机 八、错误处理机制 九、使用SOMEIP和SOMEIP-SD发布、订阅过程 前言: 解读SOMEIP-SD报文格式及通信过程; 正文: 一、简介: SomeIP-SD为服务发现,是SomeIP的

  • 2021-01-302021-01-30 19:32:49

    idea中Empty tag doesn’t work in some browsers 浏览器中一片空白,没有渲染样式 下面这两个才是正确的 <script src="Blog/js/jquery.easyui.min.js"></script> <script src="Blog/js/easyui-lang-zh_CN.js"></script>

  • Core Python | 2 - Core Python: Getting Started | 2.2 - Installing and Starting Python | 2.2.7 - Summ2021-01-28 04:32:32

    Congratulations! You've taken your first steps in Python, and you're well on your way to reading and writing much more sophisticated Python programs. In this module, we saw how to download and install Python on Windows, Linux and macOS. We cover

  • mmaction2 指南 (3) 添加新的数据集2021-01-27 16:31:46

    mmaction2 指南 Outline mmaction2 指南3. 添加新的数据集自定义行为识别数据集新的数据重新组织到已有格式自定义数据集的例子 支持混合数据训练 3. 添加新的数据集 自定义行为识别数据集 新的数据重新组织到已有格式 重新构建标注文件就行 标注格式一: rawframe标注【

  • Python 进阶之术 set(集合)数据结构2021-01-23 14:32:18

    本文的文字及图片来源于网络,仅供学习、交流使用,不具有任何商业用途,版权归原作者所有,如有问题请及时联系我们以作处理 本文章来自腾讯云 作者:Python知识大全 想要学习Python?有问题得不到第一时间解决?来看看这里“1039649593”满足你的需求,资料都已经上传至文件中,可以自行

  • 数组的 every()、some() 、filter()、findIndex() 方法2021-01-19 10:03:22

    <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>数组的几种方法</title> </head&

  • 用Git上传到GitHub错误:failed to push some refs to2021-01-16 10:31:56

    问题出现: 用Git指定分支上传到GitHub时,给出了如下错误提示: failed to push some refs to 看来是缺斤少两了。 原来 main 分支就除了 readme.md 以外,空空如也,所以就不打算再创 master 分支了,结果就出现了这个错误。   解决方法: 先用以下指令拉下来(与本地自动合并): git pull or

  • What does the “>” (greater-than sign) CSS selector mean?2021-01-14 22:33:22

    What does the “>” (greater-than sign) CSS selector mean? For example: div > p.some_class { /* Some declarations */ } What exactly does the > sign mean?   回答 > is the child combinator, sometimes mistakenly called the direct descendant comb

  • 【英语】英语写作指导与进阶课笔记&答案(二)2021-01-14 20:02:20

    2.2x 第一天 a dandelion 蒲公英 a harpist playing a harp 竖琴 beads 有孔小珠 a snail on some gravel 砾石 a rooster 公鸡 lilypads 睡莲 a bench on a bluff 虚张声势,悬崖峭壁 a parachute and parachutist by a mountain and forest cacti (cactuses) 仙

  • Git合并相关命令细节2021-01-12 18:03:19

    Git合并相关命令细节 合并相关命令 这里的合并指的是自动合并,是采用三路合并算法完成的。提前是存在第三方。 只有两个版本是无法自动合并的,因为无法知道以哪个版本为准。 所以合并时存在三方: 本地版本远端版本公共版本 这里列的命令都能进行自动合并时,只是细节上不同。 merg

  • 数组的map foreach filter some every reduce2021-01-06 14:32:04

    map forEach filter some every 都有三个参数 依次是 (item,index, array)   item 是数组的某项值 index 表示下标 array 表示数据的本身   forEach 是修改数据本身,没有return,也可以直接用来循环。修改的是 array[index] = item (修改的变化)   filter和map 有个return 值   flit

  • javascript中every()和some()方法用法解析2021-01-05 11:04:39

    every()和some()都是JS数组中的迭代方法 every()方法 检测数组所有元素是否满足指定条件,若都满足条件,则返回true,若有一个不满足,则返回false,并且不会再往下执行 不会对空数组检测 不会改变原始数组 some()方法 检测数组元素是否满足指定条件,若有一个满足条件,则返回true,并

  • WTF Python课堂(2)2021-01-04 23:55:05

    Hello~大家好~这里是Paradoxical的wtf课堂第二期,接下来Paradoxical会和你一起学习python的奇妙特性哦~今天学习的是for关键字的相关知识。先来看看代码吧。第一句代码创建了一个内容为“wtf”的字符串变量,第二句代码创建了一个空字典。第三句使用for循环遍历enumerate()的内容。emm

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