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  • let {x,y:y,...z} = {x:1,y:2,a:3,b:4} console.log(z); //等号的右边必须是一个对象 let {...h} = undefined let {...v} = null //数组的解构赋值 ... 有一个注意点 是...的位置 let {...z,x,y} = {x:1,y:2,a:3,b:...
  • x = np.linspace(-3, 3, 100) # linspace (-3,3)之间选取均匀间隔的100个数字 mesh_x, mesh_y = np.meshgrid(x, x) # meshgrid 生成网格点坐标矩阵 z = np.sinc((np.power(mesh_x, 2) + np.power(mesh_y, 2))) z_...
  • WPA3在2018年为无线安全添砖加瓦

    万次阅读 2018-01-10 09:35:00
    Wi-Fi Alliance Announces WPA3, the Successor to Wi-Fi's WPA2 Security Protocol The Wi-Fi Alliance -- comprising 15 major sponsor members (including Apple, Cisco, Dell, Intel, Microsoft, Qualcomm an

    Wi-Fi Alliance Announces WPA3, the Successor to Wi-Fi's WPA2 Security Protocol

    The Wi-Fi Alliance -- comprising 15 major sponsor members (including Apple, Cisco, Dell, Intel, Microsoft, Qualcomm and more) and hundreds of contributing members -- has announced that WPA3 will be introduced during 2018. 

    WPA3 is not an immediate replacement for WPA2, which will continue to be maintained and enhanced. In particular, the Alliance will introduce new testing enhancements for WPA2 to reduce the potential for vulnerabilities caused by network misconfigurations; and will further safeguard managed networks with centralized authentication services.

    New Wi-Fi Alliance WPA3 certified devices will take some time to filter into widespread use. Use of the new specification will require WPA3 devices and WPA3 routers -- and since the vast majority of home wi-fi users never buy a router but use the one supplied by their ISP, many users won't become WPA3 compatible before they change ISPs. That could take several years.

    WPA3 Security ProtocolNevertheless, there are some welcome enhancements over the WP2 specification that has kept users largely, but not entirely, protected for around two decades.

    Four new capabilities for both personal and enterprise networks have been announced. There are no technical details in the Wi-Fi announcement, leading to some conjecture over exactly how they will be introduced.

    The first will be to provide "robust protections" even when the user fails to use a strong password. Mathy Vanhoef, the researcher who discovered the KRACK WPA2 vulnerability, has suggested on Twitter, "That means dictionary attacks no longer work. The handshake they're referring to is likely Simultaneous Authentication of Equals (SAE). Which is also called Dragonfly;" adding, "The standards behind WPA3 already existed for a while. But now devices are  *required* to support them, otherwise they're won't receive the "WPA3-certified" label."

    The second will simplify the process of configuring security on wi-fi devices that have limited or no display interface. The obvious use will be for small personal devices, like wearables such as smart watches -- but it could also play some role in improving the future security of the industrial internet of things.

    The third will improve the security of open wi-fi hotspots -- such as cafes, hotels and airport lounges -- by giving each user individualized data encryption. On this, Vanhoef commented, "This might refer to Opportunistic Wireless Encryption: encryption without authentication." It won't make the use of wi-fi hotspots completely secure, but should go some way to reassuring security officers who know that corporate employees work from hotspots while traveling.

    The fourth will be a 192-bit security suite aligned with the Commercial National Security Algorithm (CNSA) Suite, that will further protect wi-fi networks with higher security requirements; such as government, defense, and industrial.

    We can expect that new WPA3 devices will start to appear over the next few months -- particularly since many of the manufacturers will be members of the Alliance. However, the devices will need wait for the launch of the Wi-Fi Alliance's formal certification process before they can be truly called such. The Wi-Fi Certified designation will be important to reassure buyers.

    "Security is a foundation of Wi-Fi Alliance certification programs, and we are excited to introduce new features to the Wi-Fi CERTIFIED family of security solutions," commented Edgar Figueroa, president and CEO of Wi-Fi Alliance. "The Wi-Fi CERTIFIED designation means Wi-Fi devices meet the highest standards for interoperability and security protections."

    展开全文
  • 2019.3.12

    万次阅读 2020-06-28 22:00:57
    2019.3.12 @Override public boolean contains(Object e){ Node<T> current = head; while(current!=null){ if(current.element.equals(e)){ return true; } current = current.next;

    2019.3.12

    @Override
        public boolean contains(Object e){
            Node<T> current = head;
            while(current!=null){
                if(current.element.equals(e)){
                    return true;
                }
                current = current.next;
            }
            return false;
        }
    

    在这里插入图片描述

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  • python3 -m pip install --upgrade pip
  • 目录二叉树平衡二叉树(AVL)红黑树2-3-4树2-3树b-树b+树 二叉树 平衡二叉树(AVL) 红黑树 2-3-4树 2-3树 b-树 b+树

    二叉树

    平衡二叉树(AVL)

    红黑树

    2-3-4树

    2-3树

    b-树

    b+树

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  • Python3

    万次阅读 2018-10-28 01:49:41
    if __name__ == '__main__': # main() 中国 = 'china' print(中国) python3 解释器的编码为utf-8 所以中文的变量名是合法的 mak mark
    if __name__ == '__main__':
        # main()
        中国 = 'china'
        print(中国)
        

    python3 解释器的编码为utf-8 所以中文的变量名是合法的

    mak

    mark

    展开全文
  • AWS云服务器安装Python3 + Selenium

    万次阅读 2020-02-15 19:50:39
    因工作需要,做一些Python爬虫的工作,申请了一个AWS的云服务器,要自己安装Python3环境。把安装过程记录一下,方便有类似需求的人,也给自己做个记录。 1. AWS上有现成的yum安装包,先查看一下 [ec2-user@]$ sudo...
  • Sublime text 3 搭建Python3 IDE

    万次阅读 多人点赞 2017-01-16 14:43:38
    最经遇到一件很苦恼的事情,就是在Sublime text 3中写的python代码直接挪到python原生的ide中老是报格式的错误(有时让人讨厌的缩进),没有办法,看到Sublime text 3 可以自己搭建python的ide,就收集各方资料,...
  • YOLOV3损失函数

    万次阅读 多人点赞 2019-06-19 09:36:30
    该损失函数是根据源码进行写的,与... 提升针对小物体的小技巧:针对YOLOv3来说,regression损失会乘一个(2-w*h)的比例系数,w 和 h 分别是ground truth 的宽和高。如果不减去 w*h,AP 会有一个明显下降。如果继...
  • struts2+spring3+Hibernate2实现CRUD功能

    千次下载 热门讨论 2012-04-01 01:09:38
    1.使用struts2+spring3+hibernate3整合实现用户CRUD功能。 2.使用多种配置方式 A.将hibernate从外部导入,使用MySQL作为数据库。 B.将hibernate实体映射集成到spring配置文件中。 3.使用传统的配置文件集成...
  • Xutils3使用demo

    千次下载 热门讨论 2015-11-30 16:49:24
    最新的Xutils3的使用demo,较之前的Xutils有所改变
  • 精通ANDROID 3-中文版

    千次下载 热门讨论 2012-09-20 19:53:46
    精通ANDROID 3 中文班 80M 好书
  • idea 2019.3.3 完美安装 详细讲解

    万次阅读 多人点赞 2020-05-30 21:00:33
    pan.baidu.com/s/1wYktW_bw9a3q6VqhRx4dxw [提取码]:rtug [下载方法]:点击查看如何下载软件? [备用链接]:若下载链接失效,获取最新下载链接请到公众号『软件安装管家』后台回复:idea 软件介绍 IDEA 全称...
  • 算法导论(正宗中文第三版)3-3

    千次下载 热门讨论 2014-01-11 16:46:50
    在有关算法的书中,有一些叙述非常严谨,但不够全面;另一些涉及了大量的题材,但又缺乏严谨性。本书将严谨性和全面性融为一体,深入讨论各类算法,并着力使这些算法的设计和分析能为各个层次的读者接受。...
  • H3C官方模拟器HCL(H3C Cloud Lab)

    万次阅读 2019-11-14 14:59:06
    HCL是H3C目前官方唯一出品的模拟器,整个产品的界面设计和性能比行业的其他H3C模拟器都要强大。华三云实验室(H3C Cloud Lab,简称HCL)是一款界面图形化的全真网络模拟软件,用户可以通过该软件实现H3C公司多个型号...
  • 3d Game Engine Design 3D游戏引擎设计重新发布,减少大家多次下载的麻烦.如有问题请联系jorn_yen@163.com
  • pgAdmin3客户端

    千次下载 热门讨论 2015-03-18 17:25:36
    pgAdmin3 版本1.18.1 PostgreSQL 数据库客户端 安装包
  • html5极酷滚动条3D特效

    千次下载 热门讨论 2014-03-04 15:08:12
    国外超炫3D滚动条拉动特效,有翻转,旋转,波浪……总共12款炫酷html5特效免积分赠送
  • Retrofit2+OkHttp3+RxJava

    千次下载 热门讨论 2016-05-19 18:17:39
    Retrofit2+OkHttp3+RxJava的网络框架
  • 【C++】3D场景漫游程序源码 by浅墨

    千次下载 热门讨论 2013-03-11 06:07:20
    零资源分下载,分享精神至上~ 一个综合型的Direct3D示例程序,用键盘上W,A,S,D,I,J,K,L,↑,↓,←,→12个键加上鼠标在美丽的三维空间中翱翔。包括了Direct3D初始化,DirectInput输入处理,顶点缓存,光照与材质,...
  • Learning OpenCV 3 Computer Vision with Python

    千次下载 热门讨论 2015-11-26 20:30:59
    Learning OpenCV 3 Computer Vision with Python
  • Hibernate3的依赖包

    千次下载 热门讨论 2013-08-20 08:27:03
    HIbernate3框架的依赖包。 使用说明:下载完成后,直接将解压缩后文件夹中的jar包引入到Eclipse中即可
  • HTML5 CSS3 专题 :3D展示商品信息项目完整实例源码

    万次下载 热门讨论 2014-07-12 09:55:36
    代码为博客实例代码:http://blog.csdn.net/lmj623565791/article/details/32974051 有问题博客中留言
  • D3DXVec3TransformCoord 函数

    万次阅读 2004-10-25 13:07:00
    D3DXVec3TransformCoord 函数用矩阵变换3-D向量,并且用w = 1投影结果。定义:D3DXVECTOR3 *WINAPI D3DXVec3TransformCoord( D3DXVECTOR3 *pOut, CONST D3DXVECTOR3 *pV, CONST D3DXMATRIX *pM);Param
  • iis6.0完整安装包xp+iis 6.0 完整安装包 xp sp3

    千次下载 热门讨论 2011-09-17 18:02:59
    有关如何排解 404 错误(包括 404.2 和 404.3)、与 IIS 6.0 的新安装相关的问题或从低版本的 IIS 进行升级的详细信息,请参阅疑难解答。 iis6.0完整安装包xp 通过 Web 服务器证书向导和 CTL 向导,您可以同步 Web ...

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