api programming for dummies

, otherwise it is possible to write other characters other than the content that lpdata points to the registry.4. Code20180218_ Registry Programming Basics. CPP: The entry point that defines the console application. #include "stdafx.h" #include 5. Effect6. Reference:How do I use RegCreateKeyEx?Https://stackoverflow.com/questions/29115493/how-to-use-regcreatekeyex32-bit and 64-bit application Data in the Registryhttps://msdn.microsoft.com/en-us/library

members use the most FD, which specifies the target file descriptor that the event is subordinate to, and the PTR member can use to specify FD-related user data, but since opoll_data_t is a consortium, we cannot work with both FD and PTR. If you want to associate the file descriptor Hum User data for fast data access, you can use only other means, such as discarding the FD member, and the user data pointed to by the PTR pointer contains the FD#include The timeout parameter has the same meaning

extension."C:\\xyz\\bak\\x.ini" composite standard"Ccc\\ttt\\kk\\ini" is not/* Inference infers whether a full pathname is in the C drive and is an. ini extension."C:\\xyz\\bak\\x.ini" composite Standard "Ccc\\ttt\\kk\\ini" is not */package stringapi; public class Judgepath {public static void Main (string[] args) { //String s = "Ccc\\ttt\\kk\\ini"; String s = "C:\\xyz\\bak\\x.ini"; Boolean judge = false; if (S.startswith ("c:\\") s.endswith (". ini")) {//start wit

Msg_more Msg_more Msg_waitforone = 0x10000,/* Wait for at least one packet to return.*/#define MSG_WAITF Orone Msg_waitforone msg_cmsg_cloexec = 0x40000000/* Set close_on_exit for file Descripto R received through Scm_rights. */#define MSG_CMSG_CLOEXEC msg_cmsg_cloexec};8). Close/shutdown ()Two ways to close the socketI. Close () Completely close the socket channel, including read and write #include II. Shutdown () Enhanced flexibility to selectively turn off read or wri

#include "windows.h" #include "tchar.h" int apientry _twinmain (hinstance hinstance,hinstance hprevinstance,lptstr Lpcmdline,int ncmdshow) {MessageBox (NULL, Text ("hello,world!"), text ("haha"), MB_OK); return 0;}When using _tWinMain as the entry function, the third parameter type should be defined as LPTSTR, which represents the WCHAR * type#include "windows.h" #include "tchar.h" int apientry WinMain (hinstance hinstance,hinstance hprevinstance,lpstr Lpcmdline,int ncmdshow) {MessageBox (NULL,

(SOCKFD, (const struct sockaddr *) serveraddr, sizeof (serveraddr)) = =-1) err_exit ("Connect error"); Char buf[512]; while (Fgets (buf, sizeof (BUF), stdin)! = NULL) {if (write (SOCKFD, buf, strlen (buf)) = = =-1) err_exit ( "Write socket error"); memset (buf, 0, sizeof (BUF)); int readbytes = Read (SOCKFD, buf, sizeof (BUF)); if (readbytes = = 0) {cerr Attached-makefile. Phony:clean all CC = g++ Cppflags =-wall-g-pthread-std=c++11bin = Server Clientsources =

Library specifies the library file to be linked when the program is linked. You can set the project or use # pragma comment (Lib, "XXX. lib ") pre-compiled commands to implement links to the library files. Microsoft has also improved GDI and provided a class-based Application Programming Interface (GDI. This interface is intended for C/C ++ users. 1. Precautions for calling windowsapi As mentioned above, windowsapi is implemented through the dynamic

API programming: Controls in dialogbox message processing, such as editbox wm_char message, wm_paste message, ComboBox cbn_selchange message, and editbox en_change message. The sample code is as follows: // 1. Create a dialogShort showactivationdlg (hwnd hparent){Lresult LRET = 0;LRET = dialogbox (g_hinstthisdll, makeintresource (idd_dialog_activate), hparent, (dlgproc) dlgactivationproc ); Return (short) L

Controls created with the CreateWindow function, if you want to switch with the TAP key, the simplest way is: the main window has ws_ex_controlparent extension properties, the control has ws_tapstop properties.Then the most important thing is to make a judgment when dealing with the message loop : 1 while(GetMessage (msg, NULL,0,0))2 {3 if(! IsDialogMessage (hwnd, AMP;MSG))//Not the HWND, not the message.4 {5TranslateMessage (msg);6DispatchMessage (msg);7 }8 9}WI

(LISTENFD, (const struct sockaddr *) addr, sizeof (addr)) = =-1) err_exit ("Bind error"); if (Listen (LISTENFD, somaxconn) = =-1) err_exit ("Listen error"); Char buf[512]; int readbytes; struct sockaddr_in clientaddr; Remember: Be sure to initialize socklen_t Addrlen = sizeof (CLIENTADDR) here; while (true) {int clientfd = accept (LISTENFD, (struct sockaddr *) clientaddr, addrlen); if (clientfd = =-1) err_exit ("Accept error"); Print client IP address and port numb

CreateWindow can create a STAITC directly, but this static is opaque, if we set the window background to Gray_brush, then static will obviously have a white background, generally this is certainly very difficult to see.You can set a ws_ex_transparent extension property for static, and then intercept the wm_ctlcolorstatic message in the message callback function, dealing with textcolor and Bkmode, which is the text color and background mode:To set extended properties:1 SetWindowLong (hstatic,gwl_

Document directory Create a buffer Obtain and set buffered data Split and buffer data Copy buffered data Decodes buffered data For the list of articles in this series and the translation progress, see Node. js advanced programming: using Javascript to build scalable applications (〇) This article corresponds to the original article Part 2 Chapter 4: Node Core API Basics: Using Buffers to Manipulate,

Rm () throws IllegalArgumentException, IOException {Fs.delete (New Path ("/aa"), true);}public static void Main (string[] args) throws Exception {Configuration conf = new configuration ();Conf.set ("Fs.defaultfs", "hdfs://hadoopmaster:9000/");FileSystem fs = Filesystem.get (conf);Fsdatainputstream is = Fs.open (new Path ("/jdk-7u65-linux-i586.tar.gz"));FileOutputStream OS = new FileOutputStream ("c:/jdk7.tgz");Ioutils.copy (is, OS);}}Package ZHOULS.BIGDATA.MYWHOLEHADOOP.HDFS.HDFS1;Import java.i

, you can use the try...catch...finally statement to perform exception handling, which is used to catch exceptions caused by an error or to execute a throw statement. Its basic syntax is as follows:try {Here are the statements that may produce exceptions} catch (Error) {Here is the statement that is responsible for exception handling} finally {Here is the export statement}the code above attempts to create a canvas object and gets its context. If an error occurs, you can catch the error and know

Threepath[] Listedpaths = fileutil.stat2paths (status);Fourth Stepfor (Path p:listedpaths){SYSTEM.OUT.PRINTLN (P); }Fifth StepFs.close ();}public static void Getfilelocal () throws IOException, URISyntaxException{The first stepFileSystem Fs=getfilesystem ();Step TwoPath path=new path ("/zhouls/data/weibo.txt");Step ThreeFilestatus filestatus=fs.getfilelinkstatus (path);Fourth Stepblocklocation[] blklocations = fs.getfileblocklocations (filestatus, 0, Filestatus.getlen ());Fifth Stepfor (int i=0

/" + fileName + ". txt");SYSTEM.OUT.PRINTLN ("Merged file name:" +filename+ ". txt");Open the output streamOut = Fs.create (block);Loop 20120917 All files under the date directoryfor (Path p:listedpaths){in = Local.open (P);//Open input streamIoutils.copybytes (in, out, 4096, false); Copying dataClose the input streamIn.close ();}if (out! = null){Turn off the output streamOut.close ();}After looping through all the files in the 20120917-date directory, then 20120918,20120919,,,}}/**** @function

)) {Admin.modifycolumn (TableName, HCD);Admin.modifytable (TableName, Tabledesc);Admin.modifynamespace (NSD);}else{System.out.println (TableName + "not exist");}Admin.close ();} In production development, it is recommended to use a thread pool to dopublic void deletetable (String tableName) throws Masternotrunningexception, Zookeeperconnectionexception, ioexception{Configuration conf = hbaseconfiguration.create (GetConfig ());Hbaseadmin admin = new hbaseadmin (conf);if (admin.tableexists (TableN

(args[1]));//Output path Job.setmapperclass (Scoremapper.class);//MapperJob.setreducerclass (Scorereducer.class);//Reducer Job.setmapoutputkeyclass (Text.class);//Mapper key Output typeJob.setmapoutputvalueclass (Scorewritable.class);//Mapper value Output type Job.setinputformatclass (Scoreinputformat.class);//Set Custom input formats Job.waitforcompletion (TRUE);return 0;} public static void Main (string[] args) throws Exception{string[] Args0 =// {"Hdfs://hadoopmaster:9000/score/score.txt","H

Now in the company overtime, but, do not like the current job, want to go to change to C #, but the foundation is too weak, in hard study. Come onComment on this code another day, then go to move (Jia) Brick (ban) go ...1#include 2 /*3 Get System infomation and Copy to a File4 */5 intMainintargc, TCHAR argv [])6 {7 //File Handle8 HANDLE hfile;9 DWORD Dwwritten;Ten //Char Array to Store the Path of the System infomation One TCHAR Szsystemdir [MAX_PATH]; A //Get System Directory - gets

)).Map(_.split ("::") match { case Array (user, item, rate) = Rating (User.toint, Item.toint, rate.todouble)})Set number of stealth factors, number of iterationsVal Rank= 10Val numiterations= 5//CallALSClass ofTrainMethods, passing in the data to be trained and so on model trainingVal Model=ALS.Train(ratings, rank, numiterations, 0.01)Convert the training data into(User,item)Format to be used as a test model for predicting data (collaborative filtering of model predictions when the incoming(Use