thinkful bloc

//Viewcontroller.mBlock Usage Note//Created by Renlei on 15/9/5.Copyright (c) year Renlei. All rights reserved. //#import "ViewController.h"@interface viewcontroller () defines a global queue property that can be used in any method .@property (nonatomic,strong) nsoperationqueue *queue; @endUI controls with weak and strong are no problem in development , it is essential to meet all UI controls with strong UI controls are generally not loaded in lazy loading , UI controls are th

BlockBlock is used to save a piece of codeBlock's logo: ^Blocks are like functions: You can save code, return values, physical arguments, call methods as you call them.External variables can be accessed inside the blockBy default, the outer local variables cannot be modified inside the blockAdd the __block keyword to the local variable and the local variable can be modified inside the blockDefining block types with typedeftypedef int (^myblock) (int, int);You can then use this type of Myblock to

) Dictionarywithobjectsandkeys by objects array and keys array: (ID) firstobject, ... Creating an array with multiple key-value pairs Common dictionary operation functions -(BOOL) Isequaltodictionary: (Nsdictionary *) otherdic Tionary Determines whether two dictionaries are equal -(nsarray ) Objectsforkeys: (NSARRAYNBSP; ) keys Notfoundmarker: (ID) marker Returns an array of objects via a key-value array -(void) Enumeratekeysandobjectsusingblo

= Preparedstatement.executequery (); 20//Traverse query result set 21 while (Resultset.nexT ()) {System.out.println (resultset.getstring ("id") + "" +resultset.getstring ("username"); 23 }24} catch (Exception e) {e.printstacktrace ();}finally{27 Release resource (resultset!=null) {try {Resultset.close (); "Catch (SQLException e) {+//TODO auto-generated catch block33 E.printstacktrace ();}35}36 if (preparedstatement! =null) {PNs try {preparedstatement.clos

Main topic Thinking of solving problems Reference Code There is r red and G green blocks for construction of the Red-green tower. Red-green Tower can be built following next rules:Red-green Tower is consisting of some number of levels;Let the Red-green tower consist of n levels and then the first level of this tower should consist of n blocks, second level- of n?-? 1 blocks, the third one-of n?-? 2 blocks, and so on-the last level of such tower should consist o

. Location blocks with no modifier:if the specified string exactly matches therequested URI, Nginx retains the location blo Ck.3. Blocks with the ^~ modifier:if the specified string matches thebeginning of the requested URI, Nginx Retai NS the location block.4. Location blocks with ~ or ~* modifier:if the regular expression matches therequested URI, Nginx retains the location bloc K.5. Blocks with no modifier:if the specified string matches thebeginni

This is not the database administrator DBA, but the data block address Dba:data block address! A Data block Address (DBA) is the address of a Oracle Data block for access purposes.----from the discovery of Oracle kernel technology The structure of the DBA: after 8, DB A, the first 10 bits is the file number, followed by the block number. DBA conversion: After the dump comes out of the file, some DBAs have post-conversion results, such as: Rdba:0x010001c8 (4/456), and some DBAs do not have conver

Scanner = new Scanner (system.in);String str = scanner.nextline ();Dataoutputstream.writeutf (str);}}} catch (IOException e) {TODO auto-generated Catch blockE.printstacktrace ();}}}Clientpublic class Sockettest {public static void Main (string[] args) { try { Socket s = new socket ("localhost", 6669); while (true) { OutputStream out = S.getoutputstream (); DataOutputStream dataoutputstream = new DataOutputStream (out); System.out.println ("Qingshuohua"); Scanner Scanner = new Scanner (s

It took some time to learn the "Huang Cong" Enterprise Library 5.0 SeriesArticle. Original article address: http://www.cnblogs.com/huangcong/archive/2010/06/08/1753988.html. The article is illustrated and illustrated, so it is easy to learn. After learning, I have some knowledge about Enterprise Library, but it has not been applied to projects, in the future, I will study how to apply it to projects. 1. Microsoft Enterprise Library 5.0 series (1) caching Application Block (beginner) 2.

Config information store structure of this module in HTTP block. When the function succeeds, it returns the created Configuration object. If it fails, it returns NULL. */NULL,/* Init main configuration calls the function to initialize the configuration information store structure of this module in HTTP block. When the function succeeds, it returns NGX_CONF_OK. If it fails, it returns the Ngx_conf_error or error string */NULL,/* Create server Configuration Call this function creates the Config i

of this level 1 dump: Fri Feb 28 15:17:51 2014 DUMP: Date of last level 0 dump: Fri Feb 28 15:05:56 2014 DUMP: dumping/dev/sda1 (/boot) to/root/boot. dump.1 DUMP: Label:/boot DUMP: Writing 10 Kilobyte records DUMP: mapping (Pass I) [regular files] DUMP: mapping (Pass II) [directories] DUMP: estimated 20543 blocks. DUMP: Volume 1 started with bloc K 1 at: Fri Feb 28 15:17:52 2014 DUMP: dumping (Pass III) [directories] DUMP: dumping (Pass IV) [regular

(), you must call mplayer. prepare () // method 2 start mplayer = new MediaPlayer (); try {FileDescriptor fd = getResources (). openRawResourceFd (R. raw. lost ). getFileDescriptor (); // obtain the music data source mplayer. setDataSource (fd); // you can specify mplayer as the data source. setLooping (true); // set to loop playback} catch (IOException e) {// TODO Auto-generated catch bloc K e. printStackTrace ();} // method 2 end Log. I (TAG, "play

1. Microsoft Enterprise Library 5.0 series of tutorials (1) caching Application Block (beginner) 2. Microsoft Enterprise Library 5.0 series tutorial (1) caching Application Block (advanced) 3. Microsoft Enterprise Library 5.0 series tutorial (2) cryptography Application Block(Elementary) 4. Microsoft Enterprise Library 5.0 series tutorial (2) cryptography Application Block(Advanced) 5. Microsoft Enterprise Library 5.0 series (3) Validation Application Block(Elementary) 6. Microsoft Ent

self is used in bloc, a circular reference is generated. Let's say we don't need to delegate and use block to implement a tableveiw, like this:self.myTableView.selectionHandler = ^void(NSIndexPath *selectedIndexPath) { ...};The problem here is that self refers to the Tableview,tableview Application block in order to use it at some point in the future. TableView don't know when to set him to nil. If we cannot guarantee that a circular reference wil

', VERSIONS = ' 1 ', COMPRESSIO true N = ' SNAPPY ', min_versions = ' 0 ', TTL = ' 2147483647 ', keep_deleted_cells = ' F Alse ', BLOCKSIZE = ' 65536 ', in_memory = ' false ', BLOC Kca

how do you locate the kernel file on your hard disk?For the file system of a doubt, to the Linux ext file system, for example, the file is composed of Super block, Inode, data block, to read the data must find the Inode, from which to take out the file is what bloc blocks, but who records the location of the inode? Is it a principle of MBR with hard disk? The first few fixed locations of the hard disk partition are present, and then the system interr

('. Class03_tank_con '). Append (P) } Function _setbackover (w) {//Create Mask if ($ (' #MW_ Backover '). length>0 { $ (' #MW_BACKOVER '). Show (); return; } $ ("Body"). Append ( $ (". attr ("id", "mw_backover") . CSS ({ "Background-color": "#ddd", Position: fixed, Top: ' 0 ', Left: ' 0 ', ' width ': ' 100% ', ' height ': ' 100% ', ' display ': ' Bloc K ", Opacity: 0.5, ' Z-index ': Ten }) "; } return function (opt) { Opt=st.extend (sett

in the main txt2html module dmtxt2html are enough.' d2h_textfuncs.py ' Dynamic txt2html update " "Hot-pluggable replacement functions for txt2html" "" #--functions to massage bloc KS by Type #def titleify (blocks): #def authorify (block): # ... [More blocks massaging functions] ... #--Utility functions for text transformation #def adjustcaps (TXT): #def capwor DS (TXT): #def urlify (TXT): def typographify (TXT): # [module] Names R = Re.compile

, our first field to care about is the magic signature, and for ext2 and ext3 file systems, the value of this field should be exactly equal to 0xef53. If not, then this hard disk partition is definitely not a normal ext2 or ext3 file system. From here, we can also estimate that the compatibility of ext2 and ext3 must be strong, otherwise, the Linux kernel developer should choose a magic signature for the Ext3 file system.Another important field in Super Block is s_log_block_size. From this field

Java Swing is a flash-flash effect, but the idea is simply to create a thread that constantly switches through the images you want to display to achieve flicker. The main code is attached below. Class Twinkledthread extends thread{public boolean twinkledflag=false; Private long Currenttimemillis; Public Twinkledthread (Long Currenttimemillis) {this.currenttimemillis=currenttimemillis; @Override public void Run () {while (!twinkledflag) {try {