Recently I suddenly remembered this post posted by hjbolide on the Forum: http://www.jluopen.org/bbs/viewthread.php? Tid = 129At the end of the post, there was such an interesting experiment:
Const int A = 1; int * P = const_cast (& A); * P = 2;
IOS development-invalid reloadData (UI update error of sub-thread), reloaddataui
Today, I encountered a problem while writing a chat tool.
In the registered notification, Every time another user sends a message, the UITableView must be updated.
Recently in doing EXE volume optimization of things, so the VC10 compiler connector related options are all over againIn general, use/O1 for minimum volume optimizationAccording to the MSDN introduction,/o1 equals/og/os/oy/ob2/gs/gf/gy, which
The main content of this article:
The nature of Arc
Opening and closing of Arc
The arc modifier
ARC and Block
Arc and toll-free bridging
The nature of Arc
ARC is the compiler (time) attribute, not the runtime
This article comes from my personal arc learning note, which aims to summarize the key points of the Automatic Reference counting, automatic reference counting technology for iOS development in a concise way, so it doesn't involve all the details.
C + + temporary objects and optimizations for themThe real temporary objects in C + + are invisible and they do not appear in your source code.So when does it return to the temporary object? The main three moments:Three moments when a temporary
This first article will talk about some of the programming details of Nodejs.
1, traversing the array
For (var i=0, l=arr.length; i
One of the benefits of this is that it takes less than one step per loop to get the length of an array
The example in this article describes the method that JavaScript implements to display function call stacks. Share to everyone for your reference, specific as follows:
The function call relationship between many large JavaScript applications is
The Process Control block (PCB) in Linux TASK_STRUCT the structure is the PCB. The PCB is the unique identification of the process, the PCB is implemented by the linked list (for dynamic insertion and deletion). When the process is created, a PCB is
Yesterday took care of an urgent issue, the customer complained that the product upgrade system will be slow and CPU usage is very high, the customer is very strong temper, claiming not to resolve this problem as soon as possible to return, make us
Technorati Tags: Linux threadIndex:1. Create Thread Pthread_create2. Wait for thread to end Pthread_join3. Detach Thread Pthread_detach4. Create line Cheng Pthread_key_create5. Strikethrough Cheng Pthread_key_delete6. Set Thread data
Stack Overflow online already has a lot of examples, but rarely involved in the 64-bit and operating system Linux-related, and recently just good enough to study this, so write a series of blog posts, one to help their memories, and also for more
This article mainly introduces the C language array, a friend in need can refer to the What is an array name array is a contiguous amount of memory available. For example, declare an int array int array[]={1,2,3}; What does array represent?
Basic conceptsThe Pthread_cancel call does not wait for the thread to terminate, it only requests. The thread will continue to run after the cancellation request (PTHREAD_CANCEL) is issued.Until a cancellation point (Cancellationpoint) is reached. A
The distribution of C + + variables in memory in the written test often, although simple, but also easy to forget, so make a summary in this to deepen the impression.Write a test program first:
Copy Code code as follows:
#include
1. Pthread Thread Concept
The multithreading under Linux system follows the POSIX thread interface, called Pthread. Write a multithreaded program under Linux, you need to use the header file Pthread.h, the connection needs to use the library
When the database has a serious performance problem or hang, the server side Sqlplus also can not connect, at this time if you want to get the current state information of the database, in order to diagnose afterwards, then we very much need to
C/C ++ memory allocation and Memory Allocation
I. prerequisites-program memory allocation:
The memory occupied by a C/C ++ compiled program is divided into the following parts:1. stack: the stack zone is automatically allocated and released by the
SetTimeout is often used in Javascript to delay the execution of a function. After this sentence is executed, the alert window pops up with a delay of 1 second. Next, we will introduce the usage of the JavaScript call stack and setTimeout, if you
Since function Overloading is not available in C, it is troublesome to solve the problem of variable number of function parameters. The problem of implementing an indefinite Parameter Function in C language is solved by using the stack used to call
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