err name not resolved

parent class, the. class can still display the subclass name so that the object traversed from the array I can use . class to get what kind of child he is, and decide how to assign him a value.For example for ( Person * p in Array2) {if (p.class = = [Studentclass]) {NSLog (@ " is a student ");}Else {NSLog (@ " not a student ");}}if ([array[0]class] = = [Studentclass]) {NSLog (@ " is a student ");}Else{NSLog (@ " not a student, is %@", [array[0]class]

1. view the Host IP address resolved by the DNS host name Host CommandPurposeResolve a host name to an Internet address or an Internet address to a host name.SyntaxHost [-n [-a] [-c Class] [-d] [-r] [-t Type] [-v] [-w] [-z] Hostname | Address [Server]Hostnew [-a] [-c Class] [-d] [-r] [-t Type] [-v] [-w] [-z] Hostname | Address [Server]DescriptionThe/usr/bin/host

IP address cocould not be resolved: Temporary failure in name resolution, resolvedresolution Mysql logs were found to have the following warnings this morning: 140724 18:41:25 [Warning] IP address '192. 16.18.217 'cocould not be resolved: Temporary failure in name resolution140724 18:41:25 [Warning] IP address '192. 16

Today when you press F11 to debug a breakpoint while pressing in SSMs, the error pops up: "T-SQL debugging cannot be started. Failed to connect to Calculator ".". This is a temporary error that usually occurs when the host name is resolved ... ",Such as:Originally, when I connected to the native database, I used to use "." or "localhost".Workaround: Close exit SSMs and log in to SSMs with the computer

TNS-03505 name cannot be resolved TNS-03505 name cannot be resolved Symptom: [Oracle @ db01 admin] $ tnsping pri TNS Ping Utility for Linux: Version 11.2.0.4.0-Production on 15-JUN-2015 21:57:52Copyright (c) 1997,201 3, Oracle. All rights reserved. Used parameter files: TNS-03505: failure to resolve

] admin]$ Lslistener.ora samples shrept.lst sqlnet.ora Tnsname.ora Tnsnames.ora[[email protected] admin]$ chmod u+x tnsnames.ora [[email protected] admin]$ lltotal 24-rwxr-xr-x 1 Oracle oin Stall 711 June 22:08 listener.oradrwxr-xr-x 2 Oracle oinstall 4096 June one 21:56 samples-rw-r--r--1 Oracle oinstall5. The problem is resolved by modifying and replacing the listening file:[[emailprotected] admin]$ cat Tnsname.ora > tnsnames.ora[[emailprotect

PHP now has many class libraries that generate files, such as generating zip files, creating QR codes, and so on. These libraries are cool to use, but once you generate a file name with Chinese, it's most likely garbled.Problem: The generated Chinese file name will become garbledResolution: Using Functions: Iconv (), rename ()When generating the file name, the En

An interface was declared Public Interface UserService {messagebean setcurrentuser (user user); User Getcurrentuser (); }In different two packages implemented two times, unit test time is no problem, but the actual test when the two implementation of the call is wrong.Workaround: One of the implementation annotations@Service ("UserService")When called@Autowired @qualifier ("UserService") Private UserService UserService;Another with the default name@Au

Smarty PHP If the Smarty template is resolved with the same name (path different), the resulting compiled file is overwritten by the problem. For example File 1 $obj _tpl is the Smarty object $obj_tpl->settemplateroot (dirname (__file__)); $obj _tpl->display ("Index.tpl"); File 2 $obj _tpl is the Smarty object $obj_tpl->settemplateroot (dirname (__file__)); $obj _tpl->display ("Index.tpl"); File 1 and

My domain name is bound 192.168.1.3 in the local debugging, and later bound to 222.186.50.211 this IP address, after the effective all other computers are already pointing to this IP address, LAN, friends, Customers are already pointing to 222.186.50.211 this IP. But only my this computer or point to 192.168.1.3 this IP address, have restarted the computer several times, the computer IP has changed, also cleared the DNS cache, also repaired the comp

),(HOST_ENTRY->H_ADDR_LIST[0][2]0X00FF),(HOST_ENTRY->H_ADDR_LIST[0][3]0X00FF));}}}while (ch!=27);WSACleanup ();}/* The program using the socket must call the WSAStartup function before using the socket.The first parameter of the function indicates the socket version that the program requested to use,Where the high byte indicates the secondary version, the low byte indicates the main version;The operating system uses the second parameter to return the version information of the requested socket.

: Invalid column index.So I checked the parameters again, no problem.Can only search the Internet to find the answer.Searched several articles, did not find and this similar question.Looking at it, it suddenly occurred to me that the columns queried in SQL are consistent with the columns in the Java code to get them?It turns out that.The reason for the exception was found: There are no queries in SQL for the columns used in Java code.That is, Java uses code like this: Row.setid (arg0.getstring (

When plsql is connected to the oracle server, the error "the name cannot be resolved" is displayed. When we connect to the Oracle database using PLSQL. the configuration in ora is as follows: TAM = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST = 10.6.36.188) (PORT = 1521) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = TAM) www.2cto.com) after saving, log in with PLSQL with error: ORA-12154: TNS: Un

If the Smarty template is resolved with the same name (path different), the resulting compiled file is overwritten by the problem.

IIS7 using the URL write module to implement pan-resolved two-level domain name rewriting?? How to do it? Two-level domain rewrite Be realistic 1.WWW.SITE.COM/CCC all rewritten to WWW.SITE.COM/INDEX.PHP/CCC 2.ccc.site.com Rewrite to CCC.SITE.COM/INDEX.PHP/CCC I wrote the following 1 implementation but 2 how all have problems. Do not know how to help XML Code

A very, very small problem with Jndi in WebLogic: The error is as follows: Javax.naming.NameNotFoundException:Unable to resolve ' jdbc.mydb '. Resolved ' JDBC '; Remaining name ' MyDB ' at Weblogic.jndi.internal.BasicNamingNode.newNameNotFoundException (basicnamingnode.java:1180 ) at Weblogic.jndi.internal.BasicNamingNode.lookupHere (basicnamingnode.java:270) at Weblogic.jndi.internal.ServerNam

websites in China must be filed, no matter what domain name, as long as the site on the Chinese mainland server, must record, if not the record, is not allowed to operate the site in mainland China; Second, if the CN domain name of the Web server in the outside, if the computer room does not provide the record, you can fill out the "Domain name resolution state

script_filename $document _root$fastcgi_script_name; Include Fastcgi_params; } Location ~. *\. (Gif|jpg|jpeg|png|bmp|swf|flv|ico) $ { expires 30d; } Location ~. *\. (JS|CSS)? $ { expires 7d; } } Nginx the configuration method that binds a pan-resolved matching domain name to a subdirectory is as follows Copy Code code as follows: server { Listen 80; server_name domain.com *.