information of each oil storage point, distance distance is the distance from the end point"cout"No\tdistance\toil\n"; for(inti =0; i cout1"\ T""\t\t""\ n"; }}//recursion distance and oil storage capacityvoidRecursion (float*distance,float*oil,intCurfloatDis_sum) {if((dis_sum-distance) >=0.0001) {Out (distance, oil, cur);return; }Else{Oil[cur] = (cur+1) * capacity; Distance[cur] = Dis_sum + ((float) capacity)/(2* cur +1); Recursion (distance, oil, cur +1, Distance[cur]); }}intMain () {floatDist
one's available. Otherwise store the value.""" greenlet = self.greenlet assert getcurrent() is self.hub, "Can only use Waiter.switch method from the Hub greenlet" switch = greenlet.switch try: switch(value) except: self.hub.handle_error(switch, *sys.exc_info())Get the saved greenlet, switch to greenlet. switch (), and return to the method we just called reuslt. get. We can also see from the above assert that th
the pool is available for lending. If this information is invalid, a negative number is returned
Getnumactive
Returns the number of objects from the loan. If this information is not available, a negative number is returned
Clear
Clears all idle objects in the pool, optionally releasing their associated resources. Clearing idle objects must use the Pooledobjectfactory.destroyobject method
Close
Close the pool and release the associated res
Author: zhanhailiang Date: 2014-10-20
Application analysis
In daily development, the php.ini configuration session.auto_start=0 closes the session by default if you want to open the session to call Session_Start:
Kernel analysis By checking the source code, we know that session_start is defined as follows: 1881/* {{proto bool Session_Start (void
Sort Algorithm Analysis [5]: Merge and sort (with Python C ++ code), and algorithm analysis with python
Merge and sort: combines two sorted sequences into one.Algorithm principle
First look at the dynamic diagram:
The algorithm is described as follows:
Algorithm Implementation Python version:
#-*-Encoding: UTF-8-*-def merge_sort (list_one, list_two): # merge a
Non-code workflow analysis based on Office365-Basic Requirement Analysis of forms!
3.2 form creation
Based on the requirements, we need to define the following form List:
writebuffer of handle must be prim_file: Write
3. Call prim_file: Read to obtain the result.
Append:
1. Like read, it is also possible to reopen.
2. If the client does not set writebuffer during open, it will directly call prim_file: Write (HDL, data ).
3. the so-called writebuff is for a single handle, that is, to create an empty list for buffer during open, and to call prim_file if buffersize> limit set during client open at append: write writes all the buffer into the file. If buffersize
the data on the server. The specific process is as follows:
Client requests a protected resource for the server
The server sends a request to the client to request username and password.
Client sends user name and password to server
The server returns the appropriate data to the client
This authentication method is not secure, the client sends the user name and password is Base64 form encrypted text, this situation of the user name and password is exposed, if someone c
I believe that anyone who has used google's analytics knows about its powerful functions.
Due to work needs, we recently updated its urchin. the js Code is down and studied. since there are few annotations, it is difficult to understand the name. I studied it for one month. small success. rewrite the code and add comments. share with you. here, google's user identification
Spring Source Code Analysis-interface and abstract class analysis for Resource AccessStarting from today, we have taken a step-by-step approach to source code analysis. At the beginning, you must start with something simple. Let's start with Spring, and its Resource abstract
The instance code in this article has been placed in the GitHub javaexample:
GitHub Address: Https://github.com/mh47838704/JavaExample
The instance code in the article:
Https://github.com/mh47838704/JavaExample/tree/master/src/test/java/com/mh/JavaExample/cloader
The instance is placed in the test module of the project, the code path is Com.mh.JavaExample.clo
Spring's AOP implementation principle, brewing some days, before writing blog confidence is not very sufficient, so re-read one side of the implementation of AOP core code, but also from the Internet to find some examples of spring AOP analysis, but found that vinegar buy dog meat too much, the title tall, Most of the content is relatively superficial some of the introduction, may also be due to the relativ
after initialization, uboot calls start_kernel to run Linux kernel. just now, I simply looked at kernel 3.4. Now, the kernel runs init in the form of creating a kernel thread. For more information about Code , see init/main in Linux kernel code. c start_kernel-> rest_init: the kernel thread is created in rest_init. The Handler function of this thread is init_post, in init_post, the system calls run_init_
Spring Source Code Analysis-interface and abstract class analysis for Resource access, springresource
Starting from today, we have taken a step-by-step approach to source code analysis. At the beginning, you must start with something simple. Let's start with Spring, and its
): = pluginawareextensionmanager.get_instance () return extensionmiddleware (app, ext_mgr= ext_mgr) return _factoryThe function contains only one _factory function, which first obtains an instance of Pluginawareextensionmanager, which is an implementation of a singleton pattern, initialized at Apirouter initialization, and analyzed in the next section. Next, the constructor that initializes the extensionmiddleware,extensionmiddleware with Ext_mgr as a parameter is primarily to
remote host, add a JMX connection,Click the Threads tab on the right, select the main thread, and then click the Thread Dump button.Find the thread main information from the contents of the dump,Main thread Dump informationFrom the stack information of the main thread, you can see the sequence of calls to the program: Sparksubmit.main-Repl. Iloop.process, Main. The Org.apache.spark.repl.SparkILoop class inherits the Iloop class, and the Iloop process method invokes the LoadFiles (settings) and
From today on, I will start learning redis source code. The redis code is relatively small and very suitable for learning. It is a very good learning material, it looks like about 100 files, which are written in C language. I hope I can finally get rid of him. I don't need the C language for a long time and I will forget it. The first step in source code
The first step:
//path: phpcms/modules/content/content.php
//Construction method public
function __construct () {
parent::__ Construct ();
$this->db = Pc_base::load_model (' Content_model ');//content Model database operation class
$this->siteid = $this->get_siteid (); Current site ID
$this->categorys = GetCache (' Category_content_ '. $this->siteid, ' Commons ');//Detailed configuration information for all columns under the current site
//Permission Judgement
if (isset ($_get[' cati
"); return __res;}1. Function Purpose:Looking for mem_map[0 ... ( PAGING_PAGES-1)]. Spare items in the. That is, the mem_map[i]==0 item, if found.Returns the physical address, unable to find return 02. Tips:Why is this code implemented in C nested assembly?I personally think the C function will open up the stack frame. The task stack may be contaminated.At the same time, the function needs to be frequently called, in the assembly, the Register-level a
PHP source code analysis-session. auto_start configuration analysis
Author: zhanhailiang date:
Application Analysis
In daily development, if session. auto_start = 0 is configured in php. ini by default, session_start must be called to enable the session:
Kernel analysis
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