1 Common variablestypedef int MYINT;You can use Myint instead of int to define the variable, the effect is the same2 Structure variables1) Struct person{int age;Char *name;}typedef Struct Person MyPerson;2) typedef Struct PERSON{int age;Char *name;}myperson;3) typedef Struct{int age;Char *name;}myperson;3 pointer variablestypedef char * String;4 Enumeration 1) enum Gender{Kgendermale,Kgenderfemale}typedef enum GENDER sex;2) typedef enum GENDER{Kgendermale,Kgenderfemale}sex;3) typedef enum{Kgend
Oracleasmalias file alias
Today, I saw a friend on the Internet asking: Why did I set log_archive_dest_1 In the ASM storage management mode to specify the archiving path, but I found two archived log files in ASM? (Not flashing back)
I checked some information and thought it was like this:Every file created in ASM gets a system-generated filename, otherwise known as a fully qualified filename (FQFN ). the fully qualified filename represents a compl
Activity-alias is designed for repeated use of Activity in android.
In the onCreate () method of the Activity, run getIntent (). getComponent (). getClassName (); may not be the name of the Activity, but may be the name of the alias, for example, in AndroidMenifest. xml has the following Configuration:
This application will create two entry points on the desktop, that is, two shortcut icons
In order to facilitate login to the server, we generally use putty, securecrt and so on tools. How does a terminal log on through a server alias?
You can create ~/.ssh/config files and specify logon information and authentication methods for each server, as follows:
$ vim ~/.ssh/config
Host www
HostName www.ttlsa.com
Port
User root
identityfile ~/.ssh/id_ Rsa.pub
identitiesonly Yes
Host bbs
HostName 115.28.45.104
User anotheruser
Tags: notation col from Port ACK member Div size BSPnot much to say directly on the statement SELECT a.ID, A.thumbnail, A. NAME, A.marketprice, A.memberprice, A.personname, A. STATUS, A.recieveorderdate, A.tracknumber, A.contact, A.reportsenddate, B. Tracknumber, A. Reportdownloadpath from ( SELECT Od.id, Ps.thumbnail, PS. NAME, Od.marketprice, Od.memberprice, Od.personname, od. STATUS, Od.recieveorderdate, Ol.tracknumber, Ol.contact, Od.reportsenddate, Od.reportsendorderlogisticid, Od.report
Today do bootstrap treeview, require input Node ID ID, parent node ID PID, textBut the SQL aliases executed are all uppercase, so the question of how to find the next ORCL alias is lowercaseThe code is as follows:Select t.fun_id "pid", T1. fun_id id,t1. FUN_NM text,t1. fun_id, T1. FUN_CD, T1. Fun_nm from T_sm_functions T, t_sm_functions T1 WHERE t.fun_id = T1. par_fun_id and t.fun_id = ' 5 ' and T1. fun_id Aliases appear in lowercase with double quote
In Linux, mis-typing the rm command is an easy task. Therefore, it is very important to avoid the harm caused by the rm command. In Linux, it is actually very easy to implement rm command interaction. you only need to simply use the rm-I command. However, if you input this information each time, the number of times you press the keyboard increases. here we can use the Linux alias to solve this problem. In Linux, mis-typing the rm command is an easy ta
Use of command alias in CentOSIn Linux, mis-typing the rm command is an easy task. Therefore, it is very important to avoid the harm caused by the rm command. In Linux, it is actually very easy to implement rm command interaction. You only need to simply use the rm-I command. However, if you input this information each time, the number of times you press the keyboard increases. here we can use the Linux alias
Use of command alias in LinuxIn Linux, mis-typing the rm command is an easy task. Therefore, it is very important to avoid the harm caused by the rm command. In Linux, it is actually very easy to implement rm command interaction. You only need to simply use the rm-I command. However, if you input this information each time, the number of times you press the keyboard increases. here we can use the Linux alias
This question is often asked on the Internet: Why does the alias I write not work under sudo?
$ Alias ' ll=ls-l '$ sudo ll A-private-dirSudo:ll:command not found
Why is that? Because under normal circumstances, alias only appears in the position of the command name of a simple command (most of the time the position of the first word) wi
parameter types supported by coherent operation
Alias is used to define the aliases string for the current data table
Help thinkphp Operation Way alias How to use, not the original ecological SQL notation
Thinkphp in the development of the document is not missing the introduction of alias? Mine is thinkPHP3.1.2 's development document.
Reply to discussion
Command 1: alias
An alias is used for convenience. If you have a frequently-used command for a long time, you can set an alias to be equivalent. For example, the default alias of LS-Alf is ll.
The alias format is as follows:
Ali
Use of command alias in LinuxIn Linux, mis-typing the rm command is an easy task. Therefore, it is very important to avoid the harm caused by the rm command. In Linux, it is actually very easy to implement rm command interaction. You only need to simply use the rm-I command. However, if you input this information each time, the number of times you press the keyboard increases. here we can use the Linux alias
System Environment: RHEL5.31. alias can set command aliasFor example:[Root @ localhost ~] # Alias // view the default system aliasAlias cp = 'cp-I'Alias l. = 'LS-d. * -- color = tty'Alias ll = 'LS-l -- color = tty'Alias ls = 'ls -- color = tty'[Root @ localhost ~] # Alias pw = passwd // set the passwd command[Root @ localhost ~] # PwChanging password for user roo
Article excerpt from: http://www.ttlsa.com/nginx/nginx-root_alias-file-path-configuration/NGINX Specifies the file path there are two ways to root and alias, the usage of the difference between the use of methods summarized under, convenient for everyone in the application process, rapid response. The main difference between Root and alias is how Nginx interprets the URI behind the location, which causes th
the-r option, namely: Ls-rt.2, Ls-h/home/hejianchao/demo/*abc in a person easy to understand the size of the file to display the/home/hejianchao/demo directory of the list of files ending with ABC.I usually use the ll simplified method to execute the LS command directly, LL, according to my settings, is equivalent to Ls-l.Here's the way to learn about alias usage. Alias is used to set the
Today, when doing statistical functions, this problem is encountered, because the query results are statistical data, that is, the use of the sum method generated by the field,SelectRefdate,sum(Triggercount) asTriggercount,sum( Case whenUnique_key is NULL Then 0 ElseTrigger_countEnd) asHitCount fromTriggerstatisticwhere User=:User andType=: type andRefdate>=: FromDate andRefdate: ToDateGroup byRefdateOrder byHitCountASCWill prompt that triggerstatistic does not exist HitCount propertyThen u
Aliasing occurs primarily on assignment issues:The assignment to the base data type is simple. The base data type stores the actual numeric value, not the reference to an object, so when you assign it, you copy the contents of one place directly to the other. For example, if you use a=b for the base data type, then B copies the contents of a. and b is not affected by this modification at all.However, when the object is "assigned", the situation changes. When you manipulate an object, we actually
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