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全部话题 - 话题: interface
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a****n
发帖数: 1887
1
COM本质论 是DON BOX 经典书,也是最好的关于COM的书籍
这个是典型的DLL HELL 问题,本质是因为程序设计的时候没有设计接口(interface)
, 虽然C++本身并不是源生支持interface, 但是可以使用abstract class without
variables 来设计interface。
external client 如果只依赖于DLL的interface(没有member variables)的话,在其
子类中添加/修改/删除 变量,并不会影响 dll的调用, 因为interface的内存布局没
有改变(这种情况下使用factroy method来分离client和dll), client不需要重新编译
而当external client 直接依赖于DLL内具体类的时候,这个类的添加/修改/删除,都
会影响到client,而这种情况,client需要重新编译
COM在提供interface的基础上更进了一步,提供接口二进制布局规范,这样多语言设计
出来的接口具有相同的二进制布局, 从而在interface programming 基础上支持跨语
言... 阅读全帖
z****e
发帖数: 54598
2
来自主题: Programming版 - go也是三种paradigm混合的语言
可以预见的是,随着接口的定义成型,这个接口的定义会越来越复杂
因为现实的复杂度是比较高的,导致很难用一些简单的接口来搞定所有问题
所以不停滴加接口,加各种函数定义,最后所有人都在这堆规则中游泳
如果这些规则是公开的标准,还凑合,如果是scope=company
下面的人很快就会造反,跳槽的会变多,因为这样等于把自身技术生命绑定到公司这艘
船上
都不是傻子,谁都会自己的前途着想,做螺丝钉没有太多人愿意
interface/protocol这些东西并不是特别好用
举个最简单的例子
比如你写了一个module,或者叫verticle/actor in vert.x/akka
是一个组件,你要plugin到这个系统中去
那么比较愚蠢的方式就是找个脚本
用container.deploy("module name");
同时当然你也需要定义好interface/protocol,让别人去impl这些interface
这种方式部署,因为这种方式要重新编译,很麻烦,不灵活
比较聪明的方式是找个config,写成

或者json
module:... 阅读全帖
w*******y
发帖数: 60932
3
plus $14 shipping and tax
Link:
http://www.cdw.com/shop/products/default.aspx?EDC=2170703
Specifications are provided by the manufacturer. Refer to the manufacturer
for an explanation of the print speed and other ratings.
Processor


64-bit Computing: Yes

Clock Speed: 2.8 GHz

Features: Intel 64 Technology , Intel Dynamic Acceleration ,
Intel Trusted Execution Technology , Intel Virtualization Technology

Manufac... 阅读全帖
w********2
发帖数: 632
4
Alert (TA13-207A)
Risks of Using the Intelligent Platform Management Interface (IPMI)
Original release date: July 26, 2013 | Last revised: October 07, 2016
Print Document
Tweet
Like Me
Share
Systems Affected
Any system connected to the internet running the Intelligent Platform
Management Interface (IPMI) may be affected. IPMI is resident on many server
platforms, and provides low-level access to a system that can override
operating system controls.
Overview
Attackers can easily identify and acce... 阅读全帖
T**r
发帖数: 7016
5
来自主题: EmergingNetworking版 - VPC networking 问题
老大,不好意思,这个贴比较长。
我把NAT搞定了,现在MSVPC guest也能上internet,即使host在公司的VPN上。但是
host
不能看到guest,guest却可以看到host(公司IP)。我需要host能看到guest,因为
guest上
有一些web application需要demo。
whatismyip.com显示两个是同一个IP,而且应该是我VPN的IP,我ISP的IP是75开头,公
司是
144开头。
下面是host 和guest的ipconfig 和route print,其中host里有一些vitualbox和
vmware的遗留下来的一些设置,以前装过,没有搞出来,现在用的是MS VPC。
******************
host ipconfig: *
******************
C:\Documents and Settings\ga2334>ipconfig
Windows IP Configuration
Ethernet adapter VMware Network Adapter VMnet8:
Co... 阅读全帖
xt
发帖数: 17532
6
来自主题: Java版 - Re: Java Tip: Constant

Yes, this works, but it is not a good idea.
First, it does not make sense to implement a constant interface.
Interface means ADT, and what does a constant interface mean?
Second, implementing such an interface gives rise to naming
clashes. For example:
public interface A {
public static final int a = 1;
}
public interface B {
public static final int a = 2;
}
If you implement both interfaces, there you have to think how
the a is evaluated. If you want to be specific, A.a, B.a is better
w
z****e
发帖数: 54598
7
来自主题: Java版 - 报offer咯
今天我吃饭时候想了想
为什么我这么长时间不用abstract class了?
而这个概念是如此的简单,当初学java时候就学过了
但是工作中为什么都没用到呢?这个想法倒是很有趣
然后我看了一下你的这个实例,我大概明白为什么了
首先先从你这段开始
你这一段一个类,目测过去,做了不少事情
又是configuration,又是handler,又是constants的
我们先看看大师的代码是怎么写的,看hibernate
hibernate对于configuration有专门的configuration类
然后对于handler,我假设这是一个sessionfactory一样的东西
然后对于你的CRUD,我假设有一个类似session一样的东西
来看hibernate是怎么写的
Sessionfactory sessionfactory = Configuration.buildSessionfactory();
//第一层,从config到factory
Session session = sessionfactory.openSession();
//第二层,从factory到produc... 阅读全帖
k****i
发帖数: 1126
8
来自主题: MedicalDevice版 - Human Factors
Human Factors
Medical devices are used in many environments and often under adverse
operating conditions. These issues affect the nature and complexity of the
user interface. The interaction of the user's capabilities, the operating
environment, and device user interface will determine the extent to which a
device is used safely and effectively.
The QS regulation requires manufacturers to address the user interface of
the equipment during device design and development. The user interface
include... 阅读全帖
Z*****o
发帖数: 4090
9
http://www.stereophile.com/features/368/index.html
By Robert Harley • Posted: Nov 1, 1993
Not that long ago, digital audio was considered perfect if all the bits
could be stored and retrieved without data errors. If the data coming off
the disc were the same as what went on the disc, how could there be a sound-
quality difference with the same digital/analog converter? This "bits is
bits" mentality scoffs at sonic differences between CD transports, digital
interfaces, and CD tweaks. Becaus... 阅读全帖
t******4
发帖数: 266
10
来自主题: JobHunting版 - Two Positions
If interested, you can send me a message.
=================================================
1. Visual Designer and R&D Engineer
In this position, we expect you are 'a visual designer and HCI R&D engineer.
' Our work will push the limits of the latest technology to create new user
experiences and empower users to access data in revolutionary ways. You will
explore interface workflows which leverage the latest in data visualization
. You will lead the charge of creating elegant and functional User... 阅读全帖
f****y
发帖数: 33
11
本公司是位于上海附近的一家从事高速网络集成电路开发设计的初创公司,主要产品是
高端网络交换机芯片.我们迫切寻找在该领域工作多年,有丰富经验的海外优秀人才加盟
我公司.
我们现特招聘交换机芯片高级系统架构师,交换机芯片高级ASIC设计和验证主管,软件设
计和测试主管.我们的待遇优厚.如有兴趣,或要了解更多详情, 可以站内联系我.
职位详细介绍:
1) Ethernet Switch System Senior Architect
Job Description:
Responsible for defining ASIC SOC chip & system architecture for Ethernet
communications switch devices. The candidate must have eight or more years
experience with silicon device architectures, with at least five years
experience with Ethernet communications devices... 阅读全帖
N********g
发帖数: 132
12
来自主题: JobHunting版 - Bloomberg面经【求祝福】
3. there are different kind of databases; given a query, system will tell
you which database you should connect(system gives you a string like "Oracle
" or "MySQL"). Design a class that could handle any query.
这题考的是separation of interface and implementation,code against interface
,not against implementation,如果做过JDBC开发,立马就知道什么意思。
好比你写了一些DAO(Database access object),就是用来把数据从数据库里面读出
来,然后交给中间层处理的工具类,但是你们开发组在不久的将来,打算把数据库由
oracle转成mysql。如果这些DAO里面的具体选取数据的方法,都跟oracle数据库相关,
都跟oralce对应的java class相关,那转数据库的时... 阅读全帖
N********g
发帖数: 132
13
来自主题: JobHunting版 - Bloomberg面经【求祝福】
3. there are different kind of databases; given a query, system will tell
you which database you should connect(system gives you a string like "Oracle
" or "MySQL"). Design a class that could handle any query.
这题考的是separation of interface and implementation,code against interface
,not against implementation,如果做过JDBC开发,立马就知道什么意思。
好比你写了一些DAO(Database access object),就是用来把数据从数据库里面读出
来,然后交给中间层处理的工具类,但是你们开发组在不久的将来,打算把数据库由
oracle转成mysql。如果这些DAO里面的具体选取数据的方法,都跟oracle数据库相关,
都跟oralce对应的java class相关,那转数据库的时... 阅读全帖
b******s
发帖数: 25
14
Please contact:
Alex Melaik
Technical Engineering Recruiter
CATAPULT STAFFING, INC.
1820 Preston Park Blvd, Suite 1600, Plano, TX 75093
Office: 972-299-8809
Fax : 469-298-3473
Cell : 972-802-9627
A*********[email protected]
See below information from recruiter Alex. He said there are two very good
positions (senior software engineer) in Sugarland, TX. They are full time
positions in a global company with a salary range from 105-120K. Sugarland
has excellent elementary/middle/high scho... 阅读全帖
y*******5
发帖数: 887
15
来自主题: JobHunting版 - 求指点一道G家Iterator的题目
用composition pattern:
1:---
package NestedIterator;
public interface NestedNodeList extends Iterable {
}
2:---
package NestedIterator;
import java.util.Iterator;
public class Node implements NestedNodeList {
private E val;
public Node(E val) {
this.val = val;
}
@Override
public Iterator iterator() {
return new NodeIterator();
}
private class NodeIterator implements Iterator {
private boolean iterated = false;
@Override... 阅读全帖
a**********0
发帖数: 422
16
来自主题: JobHunting版 - 今天想通了一个java的问题
以前有个问题 对于java.util.Collections 的某些methods比如
static SortedSet synchronizedSortedSet(SortedSet s)
Returns a synchronized (thread-safe) sorted set backed by the specified
sorted set.
static Collection unmodifiableCollection(Collection c)
Returns an unmodifiable view of the specified collection.
我当时不明白的是SortedSet 进入那个static factory method 出来怎么就变成
thread safe version了? 这肯定不是原来的SortedSet Class 而是一个新的class 它
在原始的SortedClass之上做了改动
今天看了一下effective java 解释了我的问题 其实static... 阅读全帖
f******D
发帖数: 332
17
来自主题: JobMarket版 - 招 机械 电子 固件 软件 工程师
北加州 Windsor 公司支持h1b 绿卡 new grad, entry level welcome
1. Mechanical Engineer Machine Design and Automation
JOB SITE: WINDSOR, California
Job Summary
Responsible for Automation and Machine design.
Tasks may include but are not limited to:
Design precision mechanisms and structures for accuracy, performance, and
manufacturability
Design with integration of cameras, lighting, and 3D sensors for measurement
Design robotics and machines for automation and integration
Design custom automation solutions... 阅读全帖
f******D
发帖数: 332
18
来自主题: JobMarket版 - 招 机械 电子 固件 软件 工程师
北加州 Windsor 公司支持h1b 绿卡 new grad, entry level welcome
1. Mechanical Engineer Machine Design and Automation
JOB SITE: WINDSOR, California
Job Summary
Responsible for Automation and Machine design.
Tasks may include but are not limited to:
Design precision mechanisms and structures for accuracy, performance, and
manufacturability
Design with integration of cameras, lighting, and 3D sensors for measurement
Design robotics and machines for automation and integration
Design custom automation solutions... 阅读全帖
f****y
发帖数: 33
19
本公司是位于上海附近的一家从事高速网络集成电路开发设计的初创公司,主要产品是
高端网络交换机芯片.我们迫切寻找在该领域工作多年,有丰富经验的海外优秀人才加盟
我公司.
我们现特招聘交换机芯片高级系统架构师,交换机芯片高级ASIC设计和验证主管,软件设
计和测试主管.我们的待遇优厚.如有兴趣,或要了解更多详情, 可以站内联系我.
职位详细介绍:
1) Switch System Senior Architect
Job Description:
Responsible for defining ASIC SOC chip & system architecture for Ethernet
communications switch devices. The candidate must have eight or more years
experience with silicon device architectures, with at least five years
experience with Ethernet communications devices. Must be... 阅读全帖
f****y
发帖数: 33
20
本公司是位于上海附近的一家从事高速网络集成电路开发设计的初创公司,主要产品是
高端网络交换机芯片.我们迫切寻找在该领域工作多年,有丰富经验的海外优秀人才加盟
我公司.
我们现特招聘交换机芯片高级系统架构师,交换机芯片高级ASIC设计和验证主管,软件设
计和测试主管.我们的待遇非常优厚.如有兴趣,或要了解更多详情, 可以站内联系我.
职位详细介绍:
1) Ethernet Switch System Senior Architect
Job Description:
Responsible for defining ASIC SOC chip & system architecture for Ethernet
communications switch devices. The candidate must have eight or more years
experience with silicon device architectures, with at least five years
experience with Ethernet communications devic... 阅读全帖
D*****i
发帖数: 8922
21
别瞎扯了,最早的论题是CMOS中surface state和mobility的关系。其实谈MOS管的
surface state,就是指interface state,有时候也叫interface trap,你连这个也不
知道吗?
电路速度和载流子mobility是正相关,载流子mobility和interface state密度成负相
关。所以减少interface state密度能提高电路速度。根本不用测interface state密度
在能量上的分布就可以知道它对集成电路性能的印象。
你回去问intel的人吧,PES能否测封装好的MOS管interface (surface) state密度。

pumping
s**********2
发帖数: 305
22
给 advanced material interfaces, review过几篇文章,稿件质量还不错,感觉影响
因子应该差不了吧,毕竟 Advanced material 影响因子 15左右呢。但是不知道怎么
claim啊。
The new journal “Advanced Materials Interfaces” was launched in 2014 as a
sister journal of Advanced Materials. The journal’s first impact factor
will be announced in 2017.
Advanced Materials Interfaces provides a forum for topics of surface and
interface science. These interfaces may be solid/solid, solid/liquid, solid/
gas interfaces or any combination thereof. Content published t... 阅读全帖
E*********n
发帖数: 223
23
来自主题: Georgia版 - 卖i7台式电脑 - Duluth
内容很长,我就直接c-a-p了。丽丽姐不要删。
照片体积实在太大,无法上传。用了两张通用照片,先凑和着看吧。
Lenovo H520s Desktop i7-3770 8GB 2TB Win 8 w/Recovery Discs $549 OBO - $549
(Duluth)
This listing is a good condition Lenovo H520s 57310722 Black Desktop tower (
no monitor is included in this listing).
This listing includes:
1. Lenovo H520s 57310722 desktop tower (small form factor)
2. Lenovo power cable
3. Lenovo original keyboard (comes with this tower but I never used it)
4. Lenovo driver disc
5. Genuine Lenovo system recovery disc set o... 阅读全帖
b******s
发帖数: 25
24
Please contact:
Alex Melaik
Technical Engineering Recruiter
CATAPULT STAFFING, INC.
1820 Preston Park Blvd, Suite 1600, Plano, TX 75093
Office: 972-299-8809
Fax : 469-298-3473
Cell : 972-802-9627
A*********[email protected]
See below information from recruiter Alex. He said there are two very good
positions (senior software engineer) in Sugarland, TX. They are full time
positions in a global company with a salary range from 105-120K. Sugarland
has excellent elementary/middle/high scho... 阅读全帖
d****i
发帖数: 1038
25
来自主题: EmergingNetworking版 - 问个7600 H-VPLS的问题
就是这个上面的:
http://www.cisco.com/en/US/docs/routers/7600/install_config/12.2SX_OSM_config/mpls.html#wp1338115
Figure 1-6.
PE3 和upe之间的连接:
interface Vlan 1001
xconnect vfi Internet
这个vlan1001 没有像PE3和CE3这样:
interface GigEthernet6/1
switchport
switchport mode trunk
switchport trunk encap dot1q
switchport trunk allow vlan 211
interface Vlan 1001
xconnect vfi Internet
interface Vlan 211
xconnect vfi PE3-VPLS-A
那么vlan 1001 是怎么从access-facing interface 得到来自upe3的pw packets的呢?
换言之,在这个例子中,pe3和upe3之间的interface
d*****s
发帖数: 173
26
来自主题: EmergingNetworking版 - 请教ASA5510 配置
T1给了5个ip 50.20.38.106-50.20.38.110
asa5510 0/0口绑定了地址50.20.38.110,0/1接内部网络
想要从外部通过50.20.38.106访问内部web server 192.168.1.110
我参考cisco文档配置了static nat,但是还是无法访问,请问哪里出了问题,谢谢!
http://www.cisco.com/en/US/docs/security/asa/asa83/configuration/guide/nat_objects.html#wp1119793
asa版本是8.3
附上我的配置
ASA Version 8.3(1)
!
hostname ciscoasa
domain-name default.domain.invalid
enable password b4RZzua6LpNOeJCF encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
dns-guard
!
interface Ethernet0/0
nameif outside
security-... 阅读全帖
a***n
发帖数: 262
27
来自主题: EmergingNetworking版 - 请教ASA5510 配置
I did not see the static nat.
apply access-group 100 in outside
then try to use packet-tracer utility

T1给了5个ip 50.20.38.106-50.20.38.110
asa5510 0/0口绑定了地址50.20.38.110,0/1接内部网络
想要从外部通过50.20.38.106访问内部web server 192.168.1.110
我参考cisco文档配置了static nat,但是还是无法访问,请问哪里出了问题,谢谢!
http://www.cisco.com/en/US/docs/security/asa/asa83/configuration/guide/nat_objects.html#wp1119793
asa版本是8.3
附上我的配置
ASA Version 8.3(1)
!
hostname ciscoasa
domain-name default.domain.invalid
enable password b4RZzua6LpNOeJCF encry... 阅读全帖
s*****g
发帖数: 1055
28
来自主题: EmergingNetworking版 - CLNS MTU问题
My thought:
ISIS transport uses 802.3 LLC, which has 3 extra bytes in the frame, this 3 bytes in
Ethernet II is used for data, EthernetII interface can accommodate 1500
bytes data which is typical interface MTU, so when it comes to CLNS/ISIS,
you want to make CLNS MTU to be 1500 - 3, which will be 1497. For other
flavors of interfaces which have larger interface MTU, you still want to set
to lower CLNS MTU 1497 such that LSPs won't be fragmented during flooding
from one flavor of interface to o... 阅读全帖
x*********n
发帖数: 28013
29
来自主题: EmergingNetworking版 - 对不起大家,再问一个配置。
想来想去没想明白。
2个interface是这样的,用的是public IP
interface FastEthernet0/0
description **** MPLS data interface *****
ip address 10.99.32.1 255.255.255.128
ip pim sparse-dense-mode
duplex full
speed 100
!
interface FastEthernet0/1
description **** Voice interface *****
ip address 10.99.33.1 255.255.255.128
ip pim sparse-dense-mode
duplex full
speed 100
WAN IP,multilink出去。
interface Multilink1
ip address 65.112.128.118 255.255.255.252
ppp multilink
ppp multilink fragment disable
ppp multilink group 1
然后这2个... 阅读全帖
S*A
发帖数: 7142
30
来自主题: Hardware版 - openwrt初体验 (转载)
Tomato 我没有用过,我一般避免用 Broacomm 芯片的路由。
因为那个不开源和稳定性的问题。Tomato 似乎只支持 Broadcomm。
我只是看了一下 screenshot。
Openwrt 的图形界面其实可以的,功能很强大。
感觉和其他流派比较大的差异在 Interface/网卡 管理。
Tomato 和 DDWRT 一般日常管理不需要理会 Interface。
每个 Interface 配置基本上是使用既定的模式,外加一些
变形的使用。
Openwrt 图形界面配置直接暴露 Interface 管理。
这个 Interface 和 网段的关系,还有那个 firewall zone
比较容易把新手搞晕。这个大概是 Openwrt WebUI 最不
user friendly 的地方。但是如果配复杂点的 subnet,
特别是使用 VLAN TAGGING 做不同网段的话,Wifi 和
内网的组合,Guest Wifi 等等。这个 Interface 管理就非
常好用。远胜于其他 firmware。
Openwrt 的设计理念基本上是个 Linux distro 而不仅仅... 阅读全帖
z*******3
发帖数: 13709
31
来自主题: Java版 - 报offer咯
吃了点生煎包
出去晒太阳了
其实abstract class和interface
都不过是一个单机的玩意
实际上后面对interface在不同虚拟机上的调用
搞出了rmi,rmi也不过是一个interface
然后rmi基础之上搞出了ejb
其实ejb说到底不过是一堆interface的定义
难道不是么?但是群众觉得太复杂
interface尚且如此,更何况是abstract class
说到底就是那个技术帖说的
当环境变化之后,你怎么可能要求别人的虚拟机跟你有同样的class?
这是一个joke
所以一个框架里面可能会出现abstract class,这没错
因为就是那么点人自己在搞,但是对外的接口
interface已经很离谱了,后来流行的趋势是用xml+reflection来替换这些东西
这就是为什么spring能够火起来的原因
再后来,xml都嫌太复杂,因为纠错什么很不方便
于是用annotation来搞,其实reflection和annotation能做的
理论上abstract class早就能做了,问题在于
你怎么能要求别人去继承你的abstract class?
这就是... 阅读全帖
z*******3
发帖数: 13709
32
来自主题: Java版 - 再论abstract class
之前说过我对abstract class的看法,倒是引来不少非议
尤其是有些人居然举出了例子,好,我们就从这个例子开始
有人说在这种情况下要使用abstract class
比如一个animal,有walk和sing方法
那么代码就是
public abstract class Animal{
public void walk(){System.out.println("walk")};
public abstract void sing();
}
然后对于具体的实现类,比如Cat,有如下实现
public class Cat extends Animal{
public void sing(){
System.out.println("cat sing");
}
}
这样一个类,好处就是“便于扩展”等等
OK,那么我们就从这个例子出发,说说为什么在j2ee环境中,我们不这么做
然后说说会怎么做
首先,在j2ee的环境中,关于animal这种实体
我们会在各个层面建立entity
比如在db层面建立一个表,叫做animal,然后有一个cat记录
然后通过orm,建立起一个dto之类的玩... 阅读全帖
z*******3
发帖数: 13709
33
来自主题: Java版 - 再论abstract class
之前说过我对abstract class的看法,倒是引来不少非议
尤其是有些人居然举出了例子,好,我们就从这个例子开始
有人说在这种情况下要使用abstract class
比如一个animal,有walk和sing方法
那么代码就是
public abstract class Animal{
public void walk(){System.out.println("walk")};
public abstract void sing();
}
然后对于具体的实现类,比如Cat,有如下实现
public class Cat extends Animal{
public void sing(){
System.out.println("cat sing");
}
}
这样一个类,好处就是“便于扩展”等等
OK,那么我们就从这个例子出发,说说为什么在j2ee环境中,我们不这么做
然后说说会怎么做
首先,在j2ee的环境中,关于animal这种实体
我们会在各个层面建立entity
比如在db层面建立一个表,叫做animal,然后有一个cat记录
然后通过orm,建立起一个dto之类的玩... 阅读全帖
c*****a
发帖数: 1638
34
你这个口气啊:)
那些结论都不过是行内早就讨论过的,都是废话,还车轱辘说半天干啥。关键就在于为
什么有结论,否则知其然不知其所以然有啥用呢
至于水平,老实说,我懒得和你这个水平讨论什么问题,夏虫不足语
冰,我只是提醒班上那些新进的朋友不要被引歪了。这个班上可能新入java的朋友比较
多,毁人伤RP,所以我才随便说2句。
下面给有兴趣这个话题的新学java的朋友:
java一切都是对象,那么标记一个对象的类型只有2种情况:要么继承一个类,要么实
现一个接口。
更进一步:在java原始设计enum的时候,enum要么是class或者abstract class,要么
是interface。zhaoce073说了半天就是enum不应该继承其他的(abstract)class。其
实根本不在于这个,如果这个理由是真的,可以想象一下,原始设计更应该是下面这样:
Enum是个interface,同时通过语法禁止enum继承任何其他class。这个可以取得同样的
效果,别忘了,(在很多interface支持者那里)理论上作为标记interface优于
abstract class(or normal... 阅读全帖
c*****a
发帖数: 1638
35
你这个口气啊:)
那些结论都不过是行内早就讨论过的,都是废话,还车轱辘说半天干啥。关键就在于为
什么有结论,否则知其然不知其所以然有啥用呢
至于水平,老实说,我懒得和你这个水平讨论什么问题,夏虫不足语
冰,我只是提醒班上那些新进的朋友不要被引歪了。这个班上可能新入java的朋友比较
多,毁人伤RP,所以我才随便说2句。
下面给有兴趣这个话题的新学java的朋友:
java一切都是对象,那么标记一个对象的类型只有2种情况:要么继承一个类,要么实
现一个接口。
更进一步:在java原始设计enum的时候,enum要么是class或者abstract class,要么
是interface。zhaoce073说了半天就是enum不应该继承其他的(abstract)class。其
实根本不在于这个,如果这个理由是真的,可以想象一下,原始设计更应该是下面这样:
Enum是个interface,同时通过语法禁止enum继承任何其他class。这个可以取得同样的
效果,别忘了,(在很多interface支持者那里)理论上作为标记interface优于
abstract class(or normal... 阅读全帖
f****y
发帖数: 33
36
本公司是位于上海附近的一家从事高速网络集成电路开发设计的初创公司,主要产品是
高端网络交换机芯片.我们迫切寻找在该领域工作多年,有丰富经验的海外优秀人才加盟
我公司.
我们现特招聘交换机芯片高级系统架构师,交换机芯片高级ASIC设计和验证主管,软件设
计和测试主管.我们的待遇优厚.如有兴趣,或要了解更多详情, 可以站内联系我.
职位详细介绍:
1) Ethernet Switch System Senior Architect
Job Description:
Responsible for defining ASIC SOC chip & system architecture for Ethernet
communications switch devices. The candidate must have eight or more years
experience with silicon device architectures, with at least five years
experience with Ethernet communications devices... 阅读全帖
p******s
发帖数: 229
37
please see the log as follows:
40 proc import datafile= 'C:Projectsrawdata.xls' out= w1
41 dbms= excel ;
The SAS/ACCESS Interface to PC Files is not installed. Please install this
module in order to IMPORT/EXPORT to these file types.
NOTE: The SAS System stopped processing this step because of errors.
Then I checked if SAS/ACCESS is installed. please see the following:
42 proc setinit ; run ;
NOTE: PROCEDURE SETINIT used (Total process time):
System birthday: 27FEB2013.
Operating Sys... 阅读全帖
f**d
发帖数: 768
38
来自主题: Neuroscience版 - eBook: From computer to brain
这是一本计算神经科学的优秀著作,全文拷贝这里(图和公式缺),有兴趣的同学可以
阅读
如需要,我可以分享PDF文件(--仅供个人学习,无商业用途)
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖
b**e
发帖数: 3199
39
来自主题: Military版 - 高科技出口管制的意思
具体包括以下领域
The representative general categories
of technology for which Commerce
currently seeks to determine whether
there are specific emerging technologies
that are essential to the national security
of the United States include:
(1) Biotechnology, such as:
(i) Nanobiology;
(ii) Synthetic biology;
(iv) Genomic and genetic engineering;
or
(v) Neurotech.
(2) Artificial intelligence (AI) and
machine learning technology, such as:
(i) Neural networks and deep learning
(e.g., brain modelling, time s... 阅读全帖
l****q
发帖数: 765
40
来自主题: Classified版 - [出售] ASUS K55A DH71 i7-3630QM $600 OBO
我想卖的物品:10 台 ASUS K55A DH71 i7-3630QM
单张面值:
$700 from
可接受价格(必须明码标价!):
$600.00 OBO
物品新旧要求:
Brand new sealed
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
Before me, after you.
付款方式说明:
BOA/chase/paypal/支付宝/billpay
其他补充说明:
广告的有效期:
Till gone
物品来源(Required for All Cards!):
Newegg
我的联系方式:
mitbbs
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
state and zip:
IL
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Specifications & Dimensions
Product Overview:
Color: Brown
Laptop Ty... 阅读全帖
l*********d
发帖数: 18
41
来自主题: JobHunting版 - Several Job Openings
500强公司,在离DC一小时的Warrenton VA。
要求有绿卡或美国公民。
如果感兴趣正在找工作的朋友可以把简历发给我,我可以内部推荐下。
email: l*************[email protected]
Software Engineer - UAV Sensor Applications-SOF000000BK
Qualifications
Software engineer with 2-5 years experience to perform development of real
time embedded flight control systems through full software development
lifecycle in a multidisciplinary avionics and aerospace environment.
Specific Responsibilities
•Design, code, test, and provide ongoing support for embedded systems
softwa... 阅读全帖
l*********d
发帖数: 18
42
来自主题: JobHunting版 - Job openings
500强公司,在离DC一小时的Warrenton VA。
要求有绿卡或美国公民。
如果感兴趣正在找工作的朋友可以把简历发给我,我可以内部推荐下。
email: l*************[email protected]
Software Engineer - UAV Sensor Applications-SOF000000BK
Qualifications
Software engineer with 2-5 years experience to perform development of real
time embedded flight control systems through full software development
lifecycle in a multidisciplinary avionics and aerospace environment.
Specific Responsibilities
•Design, code, test, and provide ongoing support for embedded systems
soft... 阅读全帖
S********n
发帖数: 4
43
来自主题: JobHunting版 - FMC has opening for 3 positions (转载)
【 以下文字转载自 Texas 讨论区 】
发信人: SPShouston (灌水加压), 信区: Texas
标 题: FMC has opening for 3 positions
发信站: BBS 未名空间站 (Mon Oct 24 12:01:18 2011, 美东)
Hi Folks
FMC has 3 openings for the subsea processing system, if you are interested,
you can send me your resume in txt to my bbs mail box. Thanks.
1. Electrical Power Engineer
Summarize briefly the major function and purpose of the position.
 Conceptual design of high-voltage subsea power distribution systems
to support the overall design of
subsea ... 阅读全帖
f******h
发帖数: 45
44
也找工作了一段时间了,从版上学了很多,上周G家面完了,求个bless。
之前的一些都挂了,还在继续找其他的。等定下来之后一定发面经回报本版。
谢谢大家啦!!
1. http://www.mitbbs.com/article_t/JobHunting/32005597.html
1) Implement a simple calculator (+,-,*,/);
2) Implement "+1" for a large integer;
3) How to match Ads to users;
4) How to extract useful information from a forum webpage (list all
kinds of useful signal you can think of)
5) How to detect the duplicate HTML pages (large scale);
6) Find all the paths between two places on Google map;
7)... 阅读全帖
w********a
发帖数: 621
45
来自主题: JobMarket版 - job opportunities in Billerica MA
My client in Billerica MA has following open positions.
The base salary for senior position is around 110K
The base salary for principal position is around 130K
Please send your resume to me if you are interested in one of the positions.
Thanks in advance.
====================================================================
Title: Enterprise Architect
Division: G&A
Department: Technology IT and Infrastructure
Location: USA - Massachusetts - Billerica
Description:
The Enterprise Architect will wo... 阅读全帖
m**********t
发帖数: 385
46
一、Healthcare-Clinical Application Specialist
Job:Marketing Communication;Primary Location:China-Jiangsu-Suzhou
Schedule:Full-time;Job Number 012105
Responsibilities:
•In Charge of clinical & technology training to physicians, patients
internal staffs.
•Forcefully support sales & marketing team by providing clinical and
technology materials.
•Collaborate with key customer to launch clinical study according to
marketing strategy
•Assist Academy Manager to run Academy proces... 阅读全帖
A*******o
发帖数: 2
47
Subject: Recruitment in Advanced Robotics Laboratory in the Chinese
University of Hong Kong, Hong Kong, China; and Shenzhen Institute of
Advanced Integration Technology, (Chinese Academy of Sciences/the Chinese
University of Hong Kong), Shenzhen, China
Advanced Robotics Lab has various research projects funded by both
governments and industry in the areas related to robotics, intelligent
vehicles, video surveillance, and human-machine interfaces. It is looking
for 15-20 competent scientists and ... 阅读全帖
S********n
发帖数: 4
48
来自主题: Working版 - FMC has opening for 3 positions (转载)
【 以下文字转载自 Texas 讨论区 】
发信人: SPShouston (灌水加压), 信区: Texas
标 题: FMC has opening for 3 positions
发信站: BBS 未名空间站 (Mon Oct 24 12:01:18 2011, 美东)
Hi Folks
FMC has 3 openings for the subsea processing system, if you are interested,
you can send me your resume in txt to my bbs mail box. Thanks.
1. Electrical Power Engineer
Summarize briefly the major function and purpose of the position.
 Conceptual design of high-voltage subsea power distribution systems
to support the overall design of
subsea ... 阅读全帖
w********a
发帖数: 621
49
My client in Billerica MA has following open positions.
The base salary for senior position is around 110K
The base salary for principal position is around 130K
Please send your resume to me if you are interested in one of the positions.
Thanks in advance.
====================================================================
Title: Enterprise Architect
Division: G&A
Department: Technology IT and Infrastructure
Location: USA - Massachusetts - Billerica
Description:
The Enterprise Architect will wo... 阅读全帖
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