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When should we call System.exit in Java
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In that case, it's not needed. No extra threads will have been started up, you're not changing the exit code (which defaults to 0) - basically it's pointless.
When the docs say the method never returns normally, it means the subsequent line of code is effect...
What are the differences between a pointer variable and a reference variable in C++?
..., the lifetime of that object becomes the lifetime of the reference.
std::string s1 = "123";
std::string s2 = "456";
std::string s3_copy = s1 + s2;
const std::string& s3_reference = s1 + s2;
In this example s3_copy copies the temporary object that is a result of the concatenation. Whereas s3...
可重入函数、不可重入函数及线程安全 - C/C++ - 清泛网 - 专注C/C++及内核技术
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}
signal(SIGALRM,func);
alarm(1);
}
int main(int argc, char** argv)
{
signal(SIGALRM,func);
alarm(1);
for(;;)
{
if( ( ptr = getpwnam("sar") ) == NULL )
{
err_sys( "getpwnam error" );
}
}
return 0;
}
signal...
Is there a download function in jsFiddle?
...the very own, for example, http://jsfiddle.net/Ua8Cv, if you just type the extra /show at the address bar and hit enter (followed by the browser show source code shortcut) to get the source.
– heltonbiker
Sep 30 '12 at 18:32
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AngularJS: how to implement a simple file upload with multipart form?
...hen once all uploads are done, client sends another PUT/POST request which extra data and ids of the files that are uploaded for this request. Then the server would save the record with associated files. It is like gmail when you upload files and then send the email.
– danial
...
Difference between “git add -A” and “git add .”
.... and by doing that it makes his life easier even after accounting for the extra mental tax added to ensure that there're no sync problems? I wonder why Git doesn't furthur split add -u into two separate commands add -u1 and add-u2 whereby one works for files starting with numerals and the other for...
Selecting data from two different servers in SQL Server
... ]
[ , [ @location= ] 'location' ]
[ , [ @provstr= ] 'provider_string' ]
[ , [ @catalog= ] 'catalog' ]
Read more about sp_addlinkedserver.
You have to create linked server only once. After creating linked server, we can query it as follows:
select * from LinkedServerName.Datab...
How do you increase the max number of concurrent connections in Apache?
...s less which is 200 here, then this means that after 8 child processes, no extra process will start since we have defined an upper cap of MaxClients. This also means that if I set MaxClients to 1000, after 16 child processes and 400 connections, no extra process will start and we cannot service more...
MySQL Conditional Insert
...t have dual already, you need to create it. CREATE TABLE dual ( dummy CHAR(1) DEFAULT 'x' NOT NULL CHECK (dummy = 'x') PRIMARY KEY ); INSERT INTO dual VALUES('x'); REVOKE ALL ON dual FROM PUBLIC; GRANT SELECT ON dual TO PUBLIC;
– Jonathan Leffler
Feb 24 '...
What's the difference between IEquatable and just overriding Object.Equals()?
...ng. The compiler can optimize away upcasts For example object o = (object)"string"; But downcasting - string s = (string)o; - must happen at runtime.
– Josh
Apr 29 '10 at 5:58
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