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What's the difference between deque and list STL containers?
...list elements, and that even removal invalidates only the iterators that point to the elements that are removed. The ordering of iterators may be changed (that is, list::iterator might have a different predecessor or successor after a list operation than it did before), but the iterators themselves ...
How to append text to an existing file in Java?
..."myfile.txt", true);
BufferedWriter bw = new BufferedWriter(fw);
PrintWriter out = new PrintWriter(bw))
{
out.println("the text");
//more code
out.println("more text");
//more code
} catch (IOException e) {
//exception handling left as an exercise for the reader
}
Notes...
What is the difference between cout, cerr, clog of iostream header in c++? When to use which one?
... tried researching the difference between cout , cerr and clog on the internet but couldn't find a perfect answer. I still am not clear on when to use which. Can anyone explain to me, through simple programs and illustrate a perfect situation on when to use which one?
...
Easiest way to detect Internet connection on iOS?
...ke this
Reachability *networkReachability = [Reachability reachabilityForInternetConnection];
NetworkStatus networkStatus = [networkReachability currentReachabilityStatus];
if (networkStatus == NotReachable) {
NSLog(@"There IS NO internet connection");
} else {
...
How to declare or mark a Java method as deprecated?
...t;/pre></blockquote>
*
*/
@Deprecated
public void setBaseprice(int basePrice) {
}
remember to explain:
Why is this method no longer recommended. What problems arise when using it. Provide a link to the discussion on the matter if any. (remember to separate lines for readability <b...
C# difference between == and Equals()
...ly ignored in operator overload resolution, and that is indeed the whole point of my answer.
– Mehrdad Afshari
Jul 17 '12 at 17:22
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show 9 ...
Access denied for user 'root'@'localhost' while attempting to grant privileges. How do I grant privi
...m MySQL <= 5.1 via mysqldump ... --all-databases and then imported that into your MySQL >= 5.5, your users will have been replaced (of course), but your root will have the same problem as OP. And mysql_upgrade won't work - you have to add --force flag, i.e. mysql_upgrade -u root -p --force. Ho...
Versioning SQL Server database
..._history_ table, something like
create table VersionHistory (
Version int primary key,
UpgradeStart datetime not null,
UpgradeEnd datetime
);
gets a new entry every time an upgrade script runs which corresponds to the new version.
This ensures that it's easy to see what version o...
SQL update fields of one table from fields of another one
... update only selected row
AND a.id = b.id;
SQL Fiddle.
This syntax was introduced with Postgres 8.2 in 2006, long before the question was asked. Details in the manual.
Related:
Bulk update of all columns
With list of columns in B
If all columns of A are defined NOT NULL (but not necessarily B)...
Real differences between “java -server” and “java -client”?
...Server VM has been specially tuned to maximize peak operating speed. It is intended for executing long-running server applications, which need the fastest possible operating speed more than a fast start-up time or smaller runtime memory footprint.
The Client VM compiler serves as an upgrade for both...