what is stack exchange

in it, and apply all references to the object to the stack until the stack becomes empty. Empty stack means that we have marked all objects that can be reached by this root. WeRepeat this operation on all local variables, the registers that store the reference, and static variables. Once completed, we marked every object that the program can reach with no omissi

Step 1 in the online world: what is an Ethernet switch? a switch in the broad sense is a device that completes information exchange in a communication system. Of course, we have already popularized programmable switches, and the exchange process

Every time there is a new graphics card release, a rice, n rice heated debate is very detailed content, in addition to video card game performance, power, temperature and other key indicators, memory bit width is one of the controversial points, high-end graphics card with 384bit bit width or even 512bit bit width no problem, Again a bit of the video card with 25

log on again. To implement SSO, the following functions are required: 1. All application systems share an Identity Authentication System. A unified authentication system is one of the prerequisites for SSO. The main function of the authentication system is to compare the user login information with the user information library to authenticate the user login. After the authentication

blog now also has a lot of Baidu is not love included, but there are good choices, such as: Sina, 39 health, Baidu space, etc., the loss rate is what? that is, the blog was closed, Bowen was deleted, who let you start on the chain, the timing of the wild is not yet, so don'

We exchange links is built on both sides of the site PR similar situation, a PR1 station is very difficult and a PR6 station Exchange to link is this truth, the following said some of the principles of high quality link exchange.

Baidu's interviewer askedString a= "ABC";String B=new string ("ABC");These two values, a, B are equal, if all go inside HashSet, can put down?A: A==b, but A.equals (B) is equal, because it is equal, so all go to hashset inside, can only put aThis problem involves the concept of a constant pool,Q: What is the difference

the system to stop responding, which is what we often call "dead ". At this time, Microsoft's solution is thread. That is to say, the thread runs in the process. Speaking of threads, Let's first look at what is a thread:

TheSwiftprogramminglangauge can see closures, but does not quite understand what it is, what features it has, and what Objective-C can do? For beginners of programming, please advise me to see closures in The Swift programming langauge, but I don't quite understand what it

dizzy, and I will explain it below.Unsigned long a = 10, B, * pA; Pa = A; B = * pA; (* pA) ++;The first sentence above defines a pointer type variable PA through "* pa", that is, the compiler helps us allocate a 4-byte memory on the stack, and bind the first address to the PA (that is, form a ing ). Then " A" is a va

, being careful of RTCP, and take care of any possible issue so may arise when bridging WEBRT C to a different technology. Besides, as you know WebRTC are a moving target, and so any works today in the gateways world may not work Tomorrow:which means that keeping updated is of paramount importance. Anyway, this doesn ' t need to scare. Several good implementations is already available the address different

Full ollydbg tutorial 1. What is ollydbg? Ollydbg is a 32-bit assembly-analysis debugger with a visualized interface. It can solve the problem when no source code is available, and can solve the problem that other compilers cannot solve. Version 1.10 is the final release ver

for the future of data: SQL will become a slender waistIn the computer network, there is a concept called "waist structure". The idea has solved a key problem: Imagine a stack, the underlying hardware layer, and the top software layer on any given network device. There may be various network hardware in the middle, and there are a variety of software and applications. There

by the 5+3*6+2, the final result is 25. So what does the 2nd mean, this is actually a function pointer, the address of a function can be passed to a function pointer, let it call, but the macro is not! For example, the following code: Because Max