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  String intern in Java


In Java, == is used to compare whether two objects have the same memory location, equals() is usually used to compare whether two objects have the same time and the same state.  When comparing two strings, normally we just want to know whether they have same content, so we can choose equals(). But since String comparison is so frequently needed, Java has worked on the String class to make == workable when comparing two String literals. The String class maintains a pool of emp...

   JAVA,STRING     2016-04-10 03:35:25


  Comex, the Hacker Behind JailbreakMe.com, Hired as Apple Intern


Comex, the hacker behind JailbreakMe.com, is joining Apple as an intern. JailbreakMe.com made it extremely easy for iOS users to jailbreak their devices simply by visiting a website. He announced the hiring on Twitter: It's been really, really fun, but it's also been a while and I've been getting bored. So, the week after next I will be starting an internship with Apple. Forbes unmasked Comex as Nicholas Allegra, a 19-year old Brown University student from Chappaqua, NY, by Forbes. In that arti...

   Apple,Comex,Jailbrealme,Intern,Leak,Hack     2011-08-26 02:35:57


  Memory related exception analysis in Java


Java Virtual Machine Specification divides the memory of JVM into several areas : Heap, Stack, The Program Counter register and Method area etc. In HotSpot JVM, heap is composed of Young, Tenured and Perm. There are different OutOfMemory error can happen in different memory area. Next is an overview of some of these OOM errors. StackOverflowError The JVM will allow only a specified number of stacks created nested. An JVM option -Xss can be set to determine the maximum stack size. If the num...

   Java, Memory model, Memory exception, OOM     2015-01-19 06:54:27


  Why Android Will Always Be Laggier Than iOS


One of the things that really stands out using an iPhone is just how smooth it feels compared to using Android. Where as Android is laggy, with a measurable interim between when you touch the screen and when the OS responds, iOS almost seems to anticipate what you want to do before your finger touches the display.How has Apple managed this incredible feat? A better question might be: “How has Google managed to screw up Android’s multitouch so much?” According to Andrew Munn — a sof...

   Android,iOs,Speed,UI Design,Lag     2011-12-07 03:17:18


  10 reasons why I "hate" working in Facebook


To me, the past two years in Facebook is simply a nightmare, To celebrate the upcoming 2 year anniversary, I decided to jump out of it. Facebook, I have so many reasons to hate you. However, for fear that readers find me too annoying, I take my complaints to be condensed into the top ten reasons.1. Why should submit so much code? In the past two years, the number of Facebook engineers is doubled, and the amount of code submitted by each engineer is also increased with the increase of the number ...

   Facebook,Hate,Leave     2012-08-17 13:34:05


  A brief guide to tech internships


Planning to be an Intern in the Bay Area during Summer 2012? Make sure to read an Intern's Guide to the Bay Area, and join the 2012 Facebook group.  (via this guy, via this guy) Joel Spolsky, from the Joel On Software blog and StackOverflow, wrote an article with Advice for Computer Science College Students back in '05. According to Joel,  No matter what you do, get a good summer internship. As such: here’s everything you ever wanted to know about tech internship...

   Internship,Advice,CS student     2012-02-01 04:48:31


  From College To Silicon Valley: Tips From A Veteran


Editor’s note: Pedram Keyani has been an engineer at Facebook since 2007. He is a manager on the Site Integrity team, the inventor of Keg Presence and a Hackathon enthusiast. Looking for internships and jobs after college can be exhilarating, especially for people with engineering and other technical expertise. In an otherwise tough job market, demand for software engineers is higher than ever right now. You may find that companies are actually competing to pay you for the knowledge you wo...

   Career,College,Silicon valley,Transition,Experience     2012-02-20 05:34:24


  5 Reasons to Join a Startup After Graduating


After I wrote my last post, a surprising number of people emailed me asking why I decided to join a startup after graduating from Duke. Many of those I heard from face similar decisions today: either they are college seniors choosing between a big company and a startup, or they are recent graduates who work at a big company and are thinking about making the switch. What’s interesting is that most are already leaning towards the startup career path: it seems they just want someone to assur...

   Startup,Graduation,Work,Advice,Passion,Learn     2011-11-23 08:12:13


  A Python Optimization Anecdote


Hi! I’m Pavel and I interned at Dropbox over the past summer. One of my biggest projects during this internship was optimizing Python for dynamic page generation on the website. By the end of the summer, I optimized many of dropbox.com’s pages to render 5 times faster. This came with a fair share of challenges though, which I’d like to write about today:The ProblemDropbox is a large website with lots of dynamically generated pages. The more pages that are dynamically generated from user in...

   Python,Anecodate,Optimization,Efficiency     2011-10-25 10:33:20