1. Unified Type System Scala has a unified type system, enclosed by the type Any at the top of the hierarchy and the type Nothing at the bottom of the hierarchy. All Scala types inherit from Any. # Using Any, Book extends AnyRef, and x is an Int that…
SummaryObject-oriented programming was supposed to unify the perspectives of the programmer and the end user in computer code: a boon both to usability and program comprehension. While objects capture structure well, they fail to capture system actio…
Appendix B 附录 B Figure B-1 The relationship between logical, linear, and physical addresses. 图B-1:逻辑地址.线性地址以及物理地址的关系图 The boot loader 系统启动器 When an x86 PC boots, it starts executing a program called the BIOS, which is stored in non-volatile memory on…
There are a number of algorithms that are typically used for system identification, adaptive control, adaptive signal processing, and machine learning. These algorithms all have particular similarities and differences. However, they all need to proce…
转:http://www.cnblogs.com/sage-blog/p/4323049.html 最近使用APKtool工具反编译APK老是提示不成功,错误如下: Exception in thread "main" brut.androlib.AndrolibException: Could not decode ars c file at brut.androlib.res.decoder.ARSCDecoder.decode(ARSCDecoder.java:56) at br…
The goal of this article is to provide some background information regarding the Kerberos related configuration steps of the FIM Portal and FIM Service. The article has been written in such a way so that most of the points can in fact be used for any…
1. DocumentsCluster will not support SELECT, it only contains database 0.All the nodes use TCP bus and binary protocol to communicate. Every node connect to cluster bus. The use gossip to talk.Some times we lost writing data1. master node dies right…
Doing well in your courses a guide by Andrej Karpathy Here is some advice I would give to younger students if they wish to do well in their undergraduate courses. Having been tested for many years of my life (with pretty good results), here are some…
http://queue.acm.org/detail.cfm?id=1854041 The July/August issue of acmqueue is out now acmqueue is free for ACM professional members. Non-members can purchase an annual subscription for $19.99 or a single issue for $6.99. Download the app from iTune…
http://rsync.samba.org/ 用的是rsync-3.0.6-12.el6.x86_64 Rsync version 3.1.1 released June 22nd, 2014 Rsync version 3.1.1 has been released. This is a bug-fix release. rsync is an open source utility that provides fast incremental file transfer. rsync is…
哈哈,几天连续收到百度两次电话,均是利好消息,于是乎不知不觉的自己的工作效率也提高了,几天折腾了好久终于在单机上配置好了hadoop,然后也成功的运行了一个用例,耶耶耶耶耶耶. 转自:http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-single-node-cluster/ Running Hadoop on Ubuntu Linux (Single-Node Cluster) Table of Conten…
Background Recently, I find that we need to type some very long gradle commands to run build, check, test, etc. It's very annoying, isn't it? Idea Can I write a script to run the gradle commands? Is that easy? If so, I only need to type 2 or 3 char…
