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$ l_n (n \ geq1) $, because the distance between the first $ N $ space jump is determined based on the previous information, so $ l_n $ about $ \ mathcal {f }_{ n-1} $ is measurable. So if the coordinates of the ship after the $ N $ space jump are $ \ overrightarrow {x_n} $, then \ [\ overrightarrow {x_n} = \ overrightarrow {X _ {n-1} + l_n \ overrightarrow {u_n }. \ quad n =, \ ldots \] where $ \ overrightarrow {x_0} = (R,) $ is the initial position of the spacecraft. Set $ T $ to the firs

him for time. Do not promise the "What will happen", "what will happen", or "What will happen later.4. Everything is defective. Do not make perfect things. Make sure that everything is stable and reliable and meets the original plan. 4. Reliable detailsMobile product development needs to deal with a variety of screens. It is really difficult to achieve good peop

because it is a parameter passed to the function. But most operator new (including the one in Clause 10) written for classes are designed only for specific classes, not for all classes, nor for all their subclasses. This means that for operator new of Class X, the internal behavior of the function is precise sizeof (x) when it comes to objects: Not big or small. However, due to inheritance, operator new in the base class may be called to allocate memory for a subclass object:Class base {Public:

command to print more information about the ongoing work. Common Errors During Patching------------------- When you use the patch command to install a patch, it tries to verify the integrity of the file in different ways.Check whether this file is a valid patch file and whether the code around the changed file is provided or not.Context match. These are only the two most basic integrity checks performed by the patch.If a patch encounters something that seems incorrect, there are two options. It

you know what the five best programs on the Internet are ?" They started scratching their heads. I told them: "The 1st name is bind (Berkeley Internet Name Daemon ). Every website of you depends on this program, which is maintained by a programmer with long hair in Sequoia. The 2nd name is sendmail or Apache. 75% of online emails are sent by Sendmail ." You can continue to count, all of which are Berkeley Software. People cannot see it all. Jenny: I remember that there were a lot of arguments a

still connected to the server. When you see "Ping? Pong! "Results in your status window, it means the server has pinged your client, and it has responded back with a pong to ensure the server that you are still connected. WhenThisDoes not happen and you disconnect without the server's knodge DGE, the server will automatically disconnect the user when it does not receive a response, resulting in a ping timeout. Ping timeouts occur to everyone. Broken

version of the application. Mode: Remove virtual memory Answer: So far, this is positive, that is, if it does not happen again when the next cold day arrives, it means this is the main cause. Append: If you use ghost to restore the OS, we recommend that you delete all *. pf files in the Windows \ prefetch directory because Windows needs to re-collect the physical address of the program. Some applications have errors in the memory of the "0x7cd64998"

phone is called. The game music is not stopped and there is no ringtone. Solution: Use hidennotify to release the sound. 6. Repeated calling of the graphics method by j2s' is the main cause of the slow running of nokia40.This is especially evident in cross-axis volutional games.In contrast, the servicerepaints and GC methods are not slow.Solution: create an image, draw the background on it, retain the desired part for each scroll, update the part to be updated, and then draw the image as a back

case, we seldom discuss ideas, but are only busy solving specific problems. How can this motor be better controlled? Can the convergence condition of this algorithm be weakened. In our words, this is called "just pulling your car without looking up at the road", and in their words, it is "just do it ". I am deeply touched by the differences in education in the West.Therefore, if we say that the fuzzy theory is similar to that of the orients. At least for me, this is because of people's misunder

[Wang Feng] Beijing welcomes you to be touched by music[Mo Wenwei] Let us all go beyond ourselves[Tan Jing] Beijing welcomes you to have a great dream.[CHAN yixun] a miracle will happen if you have the courage[Yan weiwen] Beijing welcomes you to create a new place for you[Dai Yuqiang] The charm in the flow is full of vigor[Wang Xia, Li shuangsong] Beijing welcomes you to share your breath in the sun[Liao changyong] refresh the score on yellow Land[Lin

and decided to study medicine in London. In the days to come, he went to the University of Edinburgh and Gottingen, and finally went back to the university of imanneur in Cambridge to end his studies. When he was a student, Yang studied the structure of human eyes, began to come into contact with some basic optical problems, and eventually formed his idea of fluctuating light. Yang's understanding is derived from the so-called "interference" Phenomenon in volatility. We all know that common sub

I just saw a comment from a reader in the article having your own ethics is lonely. He asked the most difficult question on the road to success-what will happen when you are making progress while your friends remain unchanged? I am looking for some suggestions and guidance, so I found this blog. I felt unhappy four years ago. I have no way out. I decided to seriously reflect on my life and decide to get rid of some bad habits and cultivate some good

expression (that is, create an object dynamically by using new), two things happen. First, allocate memory (via a function called operator new-see Item 49 and 51). Second, one or more constructors are called on these memory. When you use a delete expression (that is, using delete), there are two other things that happen: one or more destructors are called on these memory, and then the memory is recycled (v

. event to the direction away from element 2 to see if any ancestor elements are bound to a handler function during the bubbling phase. There was no such situation, so nothing happened. The opposite is the case:Element1.addeventlistener (' click ', Dosomething2,false)Element2.addeventlistener (' click ', Dosomething,false)Now if the user clicks on element 2 it will happen: Click events to enter the capture phase. See if there is an o

that, although it is declared and re-assigned, the Declaration and assignment are in two different script > const foo = 1 script > script > foo = 2 script > The engine in parsing the second Write in a row to report a static error (non-strict mode also reported static error), divided into two lines of silence failure (no static analysis of the error, and run-time error only in strict mode only reported).In the third case, when Tom Schuster on November 7, 14 to make the bug rea

, intentionally or unintentionally trying to protect ourselves, while secretly complaining that this is too much, too bad. It seems that we are always lacking in the power to solve some things. We can only watch things happen or watch things happen silently, and we should be patient as much as possible, this kind of deficiency may be related to individual abilities or may be subject to objective conditions.

. The variable also points to the created zval and adds the refcount of this zval to 1. At this time, the refcount of this zval is 2.PHP provides a function to help us understand the debug_zval_dump process: $var = 1; debug_zval_dump($var); $var_dup = $var; debug_zval_dump($var); ?> Output: long(1) refcount(2) long(1) refcount(3 What if you are surprised that VaR's refcount should be 1?We know that for simple variables, PHP uses parameters in the form of passing values

nature of a physical system. all physics involves is that when we start from an elementary perspective, we can know what is happening in a large scope, predict what will happen, and move forward along these conclusions. Increase in dimension My second topic is somewhat different. I call it the increase of dimension. let's start from the classic theory of complex variable functions again: the classic theory of complex variable functions is mainly to d

who have heard of Wang Feng's works have a certain understanding of his voice strength. The low phrase "Beijing welcomes me"You "have the unmeasurable potential of Wang Feng. [Mo Wenwei] Let us all go beyond ourselves. (Five colors in the community of Zhongshan Park) It's cute. I don't think I'm out of touch with the five colors! Mo Wenwei performed well in this music video, with a bright smile and a lively and youthful smi

table, or use the SQL option SQL _BIG_TABLES before you issue a query in question. See the 7.25 set option syntax. You can also use the -- big-tables option to start mysqld. This is exactly the same as using SQL _BIG_TABLES for all queries. 18.2.8 Commands out of sync in client Error If You get Commands out of sync in your customer code; You can't run this command now, You are calling the customer function in the wrong order!This may happen. For e