vector is NOT thread-safe and the program will crash at this time, so we need to synchronize the vector resource, which means "you are waiting when I access ". The program is roughly as follows:
DWORD winapi ctestthreaddlg: thread1 (lpvoid lpparam){Ctestthreaddlg * pdlg = (ctestthreaddlg *) lpparam;While (! Pdlg-> m_bexitthread){Outputdebugstring ("11111 ");Pdlg-> m_csforvec.lock ();Pdlg- gt; m_vectest.push_back ("111 ");Pdlg-> m_csforvec.unlock ();Sleep (10 );}Return 0;}
DWORD winapi ctestthre
installation directory to/etc/and rename it to my. CNF3. After opening my. CNF, add default-character-set = utf8 under [client] and [mysqld], save and close4. Start MySQL Service (bin/mysqld_safe )
Very simple, this change once and for all, in the future MySQL All Related default encoding is UTF-8, create a new table without setting again
It should be noted that the existing data in the current database still retains the existing encoding method, so you need to perform transcoding on your own.
still return a value using the out parameter. A method can have more than one out parameter. To use the out parameter, you must use the parameter as the out parameter to pass it to the method explicitly. The value of the out parameter is not passed to the out parameter. You do not need to initialize the variable passed as the out parameter. However, the out parameter must be assigned a value before the method is returned. The property is not a variable and cannot be passed as an out parameter.
Sgid special permissions, which are used for files or directories, that allow a normal user (others, who have execute privileges) to execute this file or directory temporarily, and to have the permissions of that file or directory group. The file or directory with Sgid special permissions is displayed in yellow, and the group permission execution bit is not X, but s.Example 1 action on the file:/bin/ls of the owner and the group are root, ordinary users do LS is not able to view the root user's
Vim diff in linux (debian) Reports error E97 solution 1: an error was reported when vim was used to compare two files. I used debian stable. vim is vim7.2 www.2cto.com 2 from aptitude. So I tracked diff www.2cto.com [html] root @ host: /usr/share/vim/vim72 # type diff is/usr/bin/diff root @ host: /usr/share/vim/vim72 # type vimdiff is/usr/bin/vimdiff root @ host: /usr/share/vim/vim72 # ll/usr/bin/vimdiff lrwxrwxrwx 1 root 25 []/usr/bin/vimdiff->/etc/alternatives/vimdiff * root @ host: /usr/share
server configuration, that is, os6 --- 221[mysqld]#wsrepwsrep_provider=/usr/lib64/libgalera_smm.sowsrep_cluster_address=gcomm://os6---221,os6-222,os6---223binlog_format=ROWdefault_storage_engine=InnoDBinnodb_autoinc_lock_mode=2wsrep_node_address=os6---221wsrep_sst_method=xtrabackup-v2wsrep_cluster_name=singulaxwsrep_sst_auth=“wsrep:wsrep”Start os6-221 Database/etc/init.d/myslqbootstrap-pxcCreate a replication user (this step only needs to be performe
core language. In addition, CT can be used no matter whether the program is interactive or non-interactive.
1. multi_scp_upload.sh Source code #! /Bin/bash# Author: yifangyou# Create time: 2011-05-17# Used to batch upload files or directories to the specified directory of the target machine through SCP# Configuration file format:# Ssh_hosts = ("1.1.1.1" "2.2.2.2 ")# Ssh_ports = ("22" "22"). The default value is 22, or the number is less than ssh_hosts. Use the default value.# Ssh_users = ("roo
For example, your host IP address is 192.168.1.8.
You have three sites: www.111.com, www.222.com, and www.333.com.
The corresponding website files are stored in the \ website \ 111; D: \ website \ 222; D: \ website \ 333 folder on the host.
Now open the Apache configuration file httpd. conf and set different domain names to different directories:
CopyCodeThe Code is as follows: namevirtualhost 192.168
Notes for call_user_func Functions
Parse error: syntax error, unexpected t_list, expecting t_string in
When using this function today, the above problem is always prompted. The precautions for using the tool are not described in the official manual.
Appendix:Mixed call_user_func (callback $ function [, mixed $ parameter [, mixed $...])Any built-in or user-defined functions can be passed, except for the language structures such as array (), echo (), empty (), eval (), exit (), isset (), list (),
Common Solution for CentOS yum errorsCentos-yum update problem-103When installing software on centOs. Error message:Cocould not retrieve into listhttp: // your list.centos.org /? Release = 6 arch = x86_64 repo = OS error was14: pycurl error 6-"Couldn't resolvehost 'using list .centos.org '"Cocould not retrieve into listhttp: // your list.centos.org /? Release = 6 arch = x86_64 repo = extras errorwas14: pycurl error 6-"Couldn't resolvehost 'using list .centos.org '"Cocould not retrieve into l
example,Create table A (a int, B int, c int, d float, primary key (a, B, c ))Now check the plan for the query:Select c, d from A where (a> 111 or a = 111 and(B> 222 or B = 222 and c> 333 ))You can see a table scan op is used, and the Where clause ended up in residue predicate.However, if you rewrite the query in an equivalent form:Select c, d from A where a> 111 or a = 111 and B>
Notes for call_user_func functions. Notes for the call_user_func function: parseerror: syntaxerror, unexpectedt_list, and expectingt_stringin are always prompted when using this function today. Refer to the official notes for the call_user_func function.
Parse error: syntax error, unexpected t_list, expecting t_string in
When using this function today, the above problem is always prompted. The precautions for using the tool are not described in the official manual.
Appendix:Mixed call_user_func
the function is to implement a stack that can handle only the INT data type:public class Stack{Private int[] items;private int count;public Stack (int size){Items = new Int[size];Count = 0;}public void Push (int x){For code clarity and simple familiarity with generics so that the stack is not considered beyond the size of the arrayItems[count++]=x;}public int Pop (){For code clarity and simple familiarity with generics it is therefore not considered when the stack is out of bounds when the arra
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