Today's Question:  What's your opinion about Alibaba mooncake incident?        GIVE A SHOUT

SEARCH KEYWORD -- Pointer



  C/C++ Pointer Declaration Syntax – It makes sense!


I never really liked the way pointers are declared in C/C++: int *a, *b, *c; // a, b and c are pointers to int The reason is that I am used to reading variable declarations as MyType myVar1, myVar2, myVar3; and I always read “int*” as the type “integer pointer”. I therefore wanted the following int* a, b, c; // a is a pointer to int, b and c are ints to mean that a, b and c all were of type int*, i.e. pointers to int. and I therefore found it slightly annoying to repea...

   C,Pointer,Declaration,Attempt     2012-02-22 05:43:58


  Smuggling data in pointers


While reading up on The ABA Problem I came across a fantastic hack.  The ABA problem, in a nutshell, results from the inability to atomically access both a pointer and a "marked" bit at the same time (read the wikipedia page).  One fun, but very hackish solution is to "smuggle" data in a pointer.  Example:#include "stdio.h"void * smuggle(void * ptr, int value){  return (void *)( (long long)ptr | (value & 3) );}int recoverData(void * ptr){  return (long long)ptr &...

   C,Pointer,Bit,Data,Atomic,Smuggle     2011-11-14 08:15:59


  Algorithm : Delete middle node from singly linked list


Questions about singly linked list are frequently asked during technical interviews. Today we will share with you one algorithm question about singly linked list. Here is the problem description. Assuming the only information you are giving is there is a pointer to a middle node of a singly linked list, no other information about the linked list is given. Please delete this node and don't affect the structure of the linked list. Initially you may think this question is easy if you know the hea...

   ALGORITHM,C,LINKED LIST     2015-10-30 05:21:25


  Why using anchors as buttons sucks


So let's say you're an awesome web developer making an awesome web app. One day, you add a link in the web app that has an event handler instead of an href. Testing it, you realize that your cursor doesn't change when hovering over it, unlike a normal link. You think for a minute and then give it a cursor:pointer style, which fixes the issue. You are happy.The next day, QA informs you that the link cannot be tabbed to. Confused, you do some research and find a solution to the problem: Sim...

   Anchor,Button,Link,Sucks     2012-02-05 07:22:39


  Facebook : App Center is more suitable for developers


Facebook recently announced that they will release their own app store named App Center. It will be released in a few weeks. At the same time, Facebook also released the introduction page of the App Center, it introduces to developers the process of app submission and the standards of app approval.Facebook allows developer to provide charged apps via App Center. Since it has over 900 million active users globally, so many developers are willing to develop apps on this platform. Facebook will dec...

   Facebook,App Center,Introduction     2012-05-13 01:03:56


  How To Build A Site That Looks Great On Every Screen


The responsive design revolution is upon us. With tablet and smartphone use soaring and changing our media habits, Web publishers no longer have a choice but to build designs that work properly on any device or screen size.The hard-working Silicon Valley design firm ZURB has recently released version 2.0 of its responsive design boilerplate kit called Foundation, which is a fundamental framework for a one-size-fits all Web project.Foundation is a CSS and Javascript framework that comes with...

   Website,Design,Device,Screen,Adaptable,Mobile     2011-10-31 10:46:32


  The ugliest C feature:


<tgmath.h> is a header provided by the standard C library, introduced in C99 to allow easier porting of Fortran numerical software to C. Fortran, unlike C, provides “intrinsic functions”, which are a part of the language and behave more like operators. While ordinary (“external”) functions behave similarly to C functions with respect to types (the types of arguments and parameters must match and the restult type is fixed), intrinsic functions accept arguments of several types a...

   C,,Fortran,Intrinsic functions,C99,Ugly     2011-12-26 08:33:27


  Function Pointers in C are Underrated


The function pointer in C is, in my opinion, one of the most ignored gems of the language. It’s the kind of feature you rarely need, and then suddenly, one day, you find yourself in dire need of it, as evidenced by the real-life use-case below. If you don’t know what a function pointer is in the first place, here’s the meat of it: it gives you the ability to pass a function around like a normal variable. If you know Python / Ruby / Lisp, you might know it by the name ‘lambda’, ...

   C,Pointer,Analysis     2012-03-24 05:23:09


  Tricks with Direct Memory Access in Java


Java was initially designed as a safe managed environment. Nevertheless, Java HotSpot VM contains a “backdoor” that provides a number of low-level operations to manipulate memory and threads directly. This backdoor – sun.misc.Unsafe – is widely used by JDK itself in packages like java.nio or java.util.concurrent. It is hard to imagine a Java developer that uses this backdoor in any regular development because this API is extremely dangerous, not portable, a...

   Java,Directly memory access,Tricks,JVM     2012-02-13 05:31:19


  Peter Thiel thinks tech innovation has 'stalled'


Peter Thiel says the United States no longer cares much about science or technology(Credit: Declan McCullagh/CNET)ASPEN, Colo.--One of the Internet's most influential investors and entrepreneurs is offering a dire prediction: the pace of technological change is stagnating.Peter Thiel, a co-founder of PayPal and early investor in Facebook, warned that--despite spectacular advances in computer-related fields over the last few decades--technological progress overall is actually "stalled out.""There...

   Peter Thiel,PayPal,Technology,Stack,Inno     2011-08-24 08:42:42