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Twenty Years of Linux according to Linus Torvalds
Summary: In an interview, Linus Torvalds talks about Linux’s multiple 20th birthdays and life with Linux.The Linux Foundation, the nonprofit organization dedicated to accelerating the growth of Linux, started the celebration of Linux’s 20th anniversary at the Linux Foundation Collaboration Summit, but when is Linux’s real birthday? Is it August 25th, when Linus announced the project? October 5th 1991, when 0.02, the first public release was made? I decided to go st...
Linux,Linus Tonalds,Interview,Developmen 2011-09-28 09:39:10
sorting in C++: 3 times faster than C.
If you don't know C++ well, you might be surprised how fast C++ can be sometimes. This is especially true when code involved is small, because then inlining - which is what C++ is very good at - and templating, which makes excessive inlining possible in the first place - has the most effect. The following code compares C and C++ sorting: #include <iostream>#include <algorithm>#include <vector>#include "stop_watch.inl" // see https://...
C++,Sorting,C,faster,efficiency 2012-03-17 12:59:45
Deep Dive into Spin Locks in Golang
In concurrent programming, a Mutex is a commonly used synchronization mechanism to protect critical resources and prevent data races. However, in certain specific scenarios, especially when the lock-holding time is short and the number of threads is limited, a more lightweight lock known as a Spin Lock can provide higher performance. What is a Spin Lock A Spin Lock is a form of busy-wait lock. When a thread attempts to acquire a lock held by another thread, it continuously checks the lock's stat...
Penrose Tiling in Obfuscated Python
Here’s a Python script which renders some Penrose tiling. Yes, this is valid Python code: _ =\ """if! 1:"e,V=100 0,(0j-1)**-.2; v,S=.5/ V.real, [(0,0,4 *e,4*e* V)];w=1 -v"def! E(T,A, B,C):P ,Q,R=B*w+ A*v,B*w+C ...
How One Missing `var` Ruined our Launch
Well, that was a veritable shitstorm (sorry for the language). Long story short, MelonCard was featured today on TechCrunch (along with other500Startups companies, also on VentureBeat, Forbes, …) and everything broke all at once. Every. little. thing. We had rolled out a huge change to MelonCard over the last few days to make our site a seamless “everything just updates†look-good / feel-good product using NodeJS lo...
JavaScript,NodeJs,jQuery,Variable,Scope,Global 2011-11-02 13:01:22
Difference between Enumeration and Iterator in java interview question and answer
This tutorial explains about what are the differences between Iterators and Enumeration and similarity of both interface which may be asked in a core java interview. Functionalities of both Iterator & Enumeration interfaces are similar that means both generates a series of all elements of the object which is to have its values iterated that can be traversed one at a time using next() method incase of Iterator and nextElement() method incase of Enumeration. The more powe...
Java,Iterator,Enumeration 2012-05-01 07:41:52
Why would I learn C++11, having known C and C++?
I am a programmer in C and C++, although I don't stick to either language and write a mixture of the two. Sometimes having code in classes, possibly with operator overloading, or templates and the oh so great STL is obviously a better way. Sometimes use of a simple C function pointer is much much more readable and clear. So I find beauty and practicality in both languages. I don't want to get into the discussion of "If you mix them and compile with a C++ compiler, it's not a mix ...
C++11,New feature,Study 2012-03-16 08:44:38
The "C is Efficient" Language Fallacy
I came across an article yesterday about programming languages, which hit on one of my major peeves, so I can't resist responding. The article is at greythumb.org, and it's called Programmer's rant: what should and should not be added to C/C++. It's a variation on the extremely common belief that C and C++ are the best languages to use when you need code to run fast. They're not. They're good at things that need to get very close to the hardware - not in the efficiency sense, but in the...
C,GCC,Fallacy,Evolvement 2012-01-09 08:54:46
The latest on Java-on-Java: the Oracle experiment that is gaining momentum
What is Project Metropolis? The not so hush-hush Project Metropolis is all set to implement Java on itself – popularly known in the developer community as Java-on-Java. Oracle has released updates on its progress, and they are very encouraging. The project will focus on building a JIT (just in time) compiler that is written in Java. It is being touted as the experimental clone of JDK (Java Development Kit) 10. Work on ‘ahead of time’ compiling and Graal compiler is also i...
HIRE JAVA DEVELOPERS 2017-05-22 08:49:32
GCC is compiled with C++ compiler
On 15 Aug, 2012, GCC merged a patch--Merge from cxx-conversion branch . This means GCC will be compiled with C++ compiler in the future, it also means that GCC will be implemented using C++. You may have following two puzzles: Why does GCC turn to C++? Without C++ compiler, how can we compile C++ codes? Why using C++? In GNU's C++ Conversion, we can find this description in the background section: Whether we use C or C++, we need to try to ensure that interfaces are easy to understan...
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