Package and download a project
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There is a two-dimensional array. 0 represents the path, and-1 represents the wall. Find the shortest path of any two points.
Let's first look at how to find a path: finding a two-point path is a typical Maze problem in the data structure. The solution is as follows:
Start from a point and look for the four directions (top, right, bottom, left). In each step, add the value of the point that has elapsed to 1 to prevent repeated walking, and press the vertices that have passed into the stack (in
I spent a day writing my first ray tracing after lrj's guidance !!
First, we will try to add new elements, such as adding a sphere or a texture.
First, there is a mirror:
Then, the last one has a refraction
(There is also the phenomenon of total reflection !)
Er ~~~ Is it very serious? I learned a anti-sawtooth skill, but it still has a little effect:
In addition, the comparison of anti-aliasing (code writing is ugly .. Rendering the following
Today, I spent another day on ray tracing, but obviously, I have gained a lot.
First, it took half an hour to push the form of Sphere reflection and refraction, and then changed the position of the light source. The first figure shown below is as follows:
I was completely shocked. Why did it suddenly become so good? (We can compare the figure of yesterday)
Whack reminded me that I pulled the light source down, so the above walls experienced a halo,
Java. util. Tracing
Java. util. substring:
The Code is as follows:
/Package com. color. program. ball;Import java. util. collections;Public class ScannerTest {Public static void main (String [] args ){S = new partition (System. in );// Receive stringString str = s. next ();// Receive integerInteger I = s. nextInt ();// Receive doubleDouble d = s. nextDouble ();System. out. println (str + I + d );}}If you use a ternary ope
After using breakpoint tracing in iOS xcode, nslog is not supported, and the method Summary corresponding to po cannot be implemented. xcodenslog
After using breakpoint tracking today, we found that nslog could not be normal, and the corresponding value could not be printed using po. The value displayed at the breakpoint was nil. I checked it online, I have summarized the following feasible methods:
Method 1: Go to the project root directory-> PROGE
Log4net cannot output logs, and the tracing finds that IsErrorEnabled and so on are Flase.
Because this is a half-outsourcing project, the writing method is different from my previous habits, so I didn't see what went wrong.
The Code is as follows:ILog Log = LogManager. GetLogger (MethodBase. GetCurrentMethod (). DeclaringType );
Page_Load (sender, EventArgs e)
{
{
Log. Error ();
}
(Exception ex)
{
Log. Error ();
}
}
Log4net configuration is placed
Built-in commands for common stack tracing in JVM
Java programs may encounter program exceptions. In this case, you can use jstack and jmap under JDK to track and observe the memory stack information in JVM for analysis, however, it should be noted that it is generally unavailable in Windows or open-source versions. If you need to install corresponding development and debugging tools, the following is a simple description:
Generally, jstack is follo
Shell programming: before running shell script tracing and debug scripts, the most feared problem is the syntax error! So how can we debug it? Is there a way to determine whether there is a problem without directly running the scripts? Haha! Of course! Let's take the bash-related parameters for determination! C code [root @ www ~] # Sh [-nvx] scripts. sh option and parameter:-n: Do not run the script, only query syntax issues;-v: before running scloud
More than 20 thousand C ++ codes this month
Code, My head is dizzy... the light tracing ends here. There is no special plan. Basically, it compares the effect of Chen zihan's boss space to implement something that is easy to understand. In my spare time, the process of implementation is the process of trying and piecing together. This is the Menger sans Ge with 36096 triangles, only diffuse reflection (including mirror light), the original resolution
(filterconfig) throws servletexception {// set filterconfig to webxmlconfigurationstrategyimpl and set some of your own attribute values... super. initinternal (filterconfig); // call the initinternal (filterconfig) of the parent class )...} public void Init () {super. init (); // call the init ()...} of its parent class ()...}
Intuitive illustration (non-professional, manual funny ~) :Summary
This article starts from the integration of WEB projects and spring. Taking authenticationfilter in CA
This error is often returned when you use Silverlight to call remote WCF Ria service across domains: the remote server returned an error: notfound. This error cannot be debugged. What should I do? You can enable the tracing function of the WCF Ria service, record the trace file, and view it using Microsoft Service trace viewer.
Add the following content to the Web. config of the WCF Ria Service Project:
System. servicemodel> System. servicemodel>
functionsa ();//Now let's see what's the stack trace stored into Myobj.stackConsole.log (myobj.stack);//This would print the following stack to the console://At A (repl:2:1) //At repl:1:1 the line//At Realruninthiscontextscript (vm.js:22:35)//At siginthandlerswrap (vm.js:98:12)//At ContextifyScript.Script.runInThisContext (vm.js:24:12)//At Replserver.defaulteval (repl.js:313:29)//At bound (domain.js:280:14)//At Replserver.runbound [as Eval] (domain.js:293:12)//At replserver.online (repl.js:513
)Usage examples:#include #include int main (intChar *argv[]) { #ifdef DEBUG mtrace (); #endif int *a = NULL malloc(sizeof(int )); // We don't call the free function here. return 0 ;}In the above code, we did not call Muntrace (), nor is it recommended. The reason is that in Linux C not only are your programs tracking dynamic memory issues, C libraries are also used. If you call Muntrace (), that means the C library stops tracking dynamic memory.If you use a macro to def
I put this data in a file, I load it through the runtime, so that's fine. I was particularly puzzled at the time, not all memory? The same data, the same memory, so the difference is so big?At that time I did not understand, then know the Java memory structure, I will understand. The loaded data is placed in the heap, and the defined constants are placed in the PermGen space . The original device limitations, Ipanel Browser Default permanent space size is relatively small, resulting in I just w
There was an incident yesterday in the rice age. One student has not respected the security guards, and then triggered the violence, which is so that we should profoundly reflect on the matter, I write a few poems to commemorate. Thoughts on the incident of security tracing
The former two peach kill three, now guard to find students.
Overlord defeated book in mind, Soup Yao domineering don't think already.
Gentleman Wen Ruyu, curl Lady ya like Yu.
Title: Orthogonal matching Tracing (OMP) for the compression-aware reconstruction algorithm
In front of a number of basic bedding, this article gives the orthogonal matching tracking (OMP) algorithm matlab function code, and gives a single test routine code, the number m and the reconstruction success probability relationship curve drawing routine code, the signal sparsity K and the reconstruction success probability relationship curve drawing routin
Tags: class ref zip build Ofo ber details node trackingGRPC----http://www.cnblogs.com/ghj1976/p/4587736.html79452948Zipkin with MySQL in Docker-composeHttps://my.oschina.net/u/3020542/blog/1613016[docker Compose Build a Zipkin environment based on MySQL storage]https://github.com/openzipkin?page=2https://linode.com/docs/uptime/analytics/zipkin-server-configuration-using-docker-and-mysql/Uber,--jaeger zipkin--http://chuansong.me/n/1652405651727Https://www.ctolib.com/topics-119952.html[laravel + G
reaction is the character set problem, because the MySQL character set has a number of parameters, and in the use of Chinese, the character set conversion will be affected by many character sets in cline,connection,server,table, so there are often some garbled situation.So we first check whether the data in the main library is written properly, and the result is normal. Then according to the following structure:cline--> master--> SlaveSince the main library data is written correctly, you can on
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