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HeartBleed: Should C be blamed for the HeartBleed bug?
There is a discussion about the security of applications written in C on Hacker News recently after the report of HeartBleed bug in OpenSSL. In this discussion, some people are saying that the applications written in C are unsafe. It seems all or most of the faults should be laid on C. I think this is biased. The language itself should not be blamed.Safety is a relative term for programming languages. No language is absolutely safe. We claim some languages like Java and C# are safer than C/C++ b...
C,HeartBleed,Analysis,Code review 2014-04-14 03:52:55
ConcurrentHashMap vs Collections.synchronizedMap()
ConcurrentHashMap and Collections.synchronizedMap() both provide thread-safe operations of collections of data. They are used in multithreaded programs to provide both thread safety and performance improvements. In many cases, we can use either of them. But the realization of thread safety is different for these two implementations. ConcurrentHashMap will create an HashEntry[] array internally to store the elements passed in from a Map, while Collections.synchronizedMap() will return a Synchroni...
ConcurrentHashMap,Collections.synchronizedMap 2014-09-18 05:04:59
Not better, but different
The most important feature of Apple products is usability--Simple, aesthetic, easy to use.Their products may not necessarily the most powerful, but they usually are the easiest to use. Following picture show a Mac (left) and a PC(right), which one looks better?Many products are trying to mimic these features, but one problem comes out:It's hard to keep a product simple while providing so many new features.If you continuously add new features to your product, your product will become more c...
Market positioning,Product manager 2012-05-19 13:29:20
Amazon is tesing in-app purchase service to chanllenge Apple and Google
According to Bloomberg News, Amazon is testing a service that allows Tablet PC users to purchase goods through mobile applications, this shows that Amazon may enter the market led by Google and Apple.According to Maria Ly, co-founder of the fitness club members card vendor Skimble which involves in the test project in the Amazon. Amazon is testing the in-app purchase service which allows users to subscribe to and purchase of goods in the application. Amazon spokesman Kinley Pearsall declin...
Amazon,in-app purchase service,Apple,Google 2012-04-04 08:18:18
Will Weibo's IPO be a success?
The Chinese version of Twitter -- Weibo is going to launch its IPO today on NASDAQ. The stock code is "WB" and its target price per share is set to $17. The total funds it's going to raise is around $328.44 million. Weibo claims it's the first Chinese SNS media to be listed on NASDAQ. Goldman Sachs and Credit Suisse are the joint lead underwriter of the IPO. They have gained one option from Weibo for validity of 30 days to buy 2.52 million shares of ADS. One interesting thing is Goldman Sachs ...
Alibaba pays all cash to acquire Youku Tudou
Alibaba announced that it had signed the agreement to acquire "China's YouTube" YouKu Tudou on November 6 Beijing Time. This deal will make Alibaba the leading entertainment and media company in China. The highlight of this deal is that Alibaba will pay all cash. When this acquisition is completed, shareholders from Youku Tudou can get cash with $27.60 per ADS. The board has approved this acquisition and they are asking the shareholders to vote to approve this deal. This deal is expected to be ...
JavaScript tips both novice and veteran developers can benefit from
In this post, we will share some less known but powerful JavaScript tips which can benefit both novice and veteran JavaScript developers. 1. Truncate array with array length We all know that object are passed by reference in JavaScript, but we may be bitten by this rule. Please check below example: var arr1 = arr2 = [1, 2, 3]; //Change arr1 arr1 = []; // arr2 will still be [1,2,3] arr1 and arr2 point to the same array [1,2,3] initially, later when arr1 repoints to [], the reference to arr2 is n...
JavaScript,Array,push 2013-08-21 04:09:10
Handle NXDomain error when resolving IP address in Ruby DNS resolver
In another post, we covered how to resolve SystemStackError when resolving IP address in Ruby. In this post, we would cover another common issue where a NXDomain error is returned when resolving an IP address. The NXDomain error means that the queried domain name does not exist in the DNS. In Ruby, DNS resolver library will use /etc/resolv.conf by default get the name servers to resolve the domain name. There are multiple DNS name servers can be specified in /etc/resolv.conf with below format. ...
RUBY,RUBY ON RAILS,NETWORK,DNS,NXDOMAIN 2017-07-16 01:39:23
Big Corporate Layoffs Hit Shenzhen IT Manufacturing Business
At 11:00 on March 29, 3 employees were ready to jump from Shenzhen Foxconn's longhua building G14. According to witnesses, those 3 employees were negotiating with company regarding the “Foxconn diversion plan”. Liu Kun, Foxconn public speaker, told reporters that many employees are working negatively to resist this plan, but Foxconn does not agree or support their actions in this way. " Company like Foxconn with large-scale labor-intensive manufacturing enterprises in Shenzhen, is f...
Former Microsoft Executive Vice President Qi Lu joins Baidu
Former Microsoft Executive Vice President Qi Lu joined Baidu(The largest search engine in China) on January 1, 2017. Qi will be group president and COO at Baidu. He will be in charge of Baidu's products, technology, sales and marketing and operations. And he will be the second most powerful person in Baidu just behind Robin Li, the founder and CEO of Baidu. At the same time, Robin Li will step away from daily operation of Baidu. In a statement, Robin Li said “Dr. Lu possesses a ...
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