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What does void* mean and how to use it?
...ointers to point to any data type, from an integer
value or a float to a string of characters. But in exchange they have
a great limitation: the data pointed by them cannot be directly
dereferenced (which is logical, since we have no type to dereference
to), and for that reason we will alway...
C: Run a System Command and Get Output? [duplicate]
... parameter - command would be fine. What they don't do is take the entire string and pass it to a shell interpreter thereby allowing you to perform shell-style redirections, etc. It is therefore impossible to use exec in the manner described to achieve the OP's goal.
– Alnita...
What is the size of column of int(11) in mysql in bytes?
...ied as zerofill. Otherwise, it will just be displayed as number 1, without extra digits. @Gaurav - don't mix how mysql displays data and how it stores it, those are two different things. What you see is not what it really might be.
– Michael J.V.
Apr 12 '11 at ...
How to get the groups of a user in Active Directory? (c#, asp.net)
...u get its groups very easily:
public List<GroupPrincipal> GetGroups(string userName)
{
List<GroupPrincipal> result = new List<GroupPrincipal>();
// establish domain context
PrincipalContext yourDomain = new PrincipalContext(ContextType.Domain);
// find your user
U...
[源码实例] c/c++获取网卡mac地址 - C/C++ - 清泛网 - 专注C/C++及内核技术
...];
}ASTAT, * PASTAT;
ASTAT Adapter;
void getmac_one (int lana_num,char *pMicID)
{
NCB ncb;
UCHAR uRetCode;
memset( &ncb, 0, sizeof(ncb) );
ncb.ncb_command = NCBRESET;
ncb.ncb_lana_num = lana_num; // 指定网卡号
// 首先对选定的网卡发送一个NCBRESET命令...
rpcndr.h和wtypes.h冲突的解决方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...x86) microsoft sdks windows v7.0a include rpcndr.h(162): error C2632: char后面的in...当编译出现如下错误时：
1>c:\program files (x86)\microsoft sdks\windows\v7.0a\include\rpcndr.h(162): error C2632: “char”后面的“int”非法
1>c:\program files (x86)\microsoft sdks\window...
Does PowerShell support constants?
...datatype when using Set-Variable? When dealing with variables one may use [string]$name = value but that seems not to be possible for constants?
– masi
Dec 1 '12 at 23:32
...
Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
I've seen Bash scripts test for a non-zero length string in two different ways. Most scripts use the -n option:
6 Answers...
How to pass objects to functions in C++?
... C tmp = a;
a = b;
b = tmp;
}
public static void main( String args[] ) {
C a = new C();
C b = new C();
C old_a = a;
C old_b = b;
swap( a, b );
// a and b remain unchanged a==old_a, and b==old_b
}
}
The Java version of the code will modify...
Malloc vs new — different padding
...n address aligned for any standard type no larger than n, and if T isn't a character type then new T[n] is only required to return an address aligned for T.
But this is only relevant when you're playing implementation-specific tricks like using the bottom few bits of a pointer to store flags, or ot...