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MySQL: determine which database is selected?
After calling mysql_select_db to grab a database, is there any way to later output the name of the database that is currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected").
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Best approach for designing F# libraries for use from both F# and C#
...ed automatically. For example:
type A(arg) =
member x.Invoke(f: Func<_,_>) = f.Invoke(arg)
let a = A(1)
a.Invoke(fun i -> i + 1)
So it makes sense to use Func/Action where applicable. Does this eliminate your concerns? I think your proposed solutions are overly-complicated. You can wr...
What's the Best Way to Shuffle an NSMutableArray?
... to answer by Ladd.
Edit: Changed (arc4random() % nElements) to arc4random_uniform(nElements) thanks to answer by Gregory Goltsov and comments by miho and blahdiblah
Edit: Loop improvement, thanks to comment by Ron
Edit: Added check that array is not empty, thanks to comment by Mahesh Agrawal
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Parsing domain from a URL
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Check out parse_url():
$url = 'http://google.com/dhasjkdas/sadsdds/sdda/sdads.html';
$parse = parse_url($url);
echo $parse['host']; // prints 'google.com'
parse_url doesn't handle really badly mangled urls very well, but is fine if you g...
How to empty a list?
...explanation of del, I'd refer to the docs: docs.python.org/reference/simple_stmts.html#the-del-statement
– fortran
Sep 9 '09 at 16:28
14
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Can I list-initialize a vector of move-only type?
...he following code through my GCC 4.7 snapshot, it tries to copy the unique_ptr s into the vector.
5 Answers
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How to export collection to CSV in MongoDB?
...eOk();var keys = []; for(var key in db.${collectionArray[$i]}.find().sort({_id: -1}).limit(1)[0]) { keys.push(key); }; keys;" --quiet`;
# now use mongoexport with the set of keys to export the collection to csv
mongoexport --host $host -u $user -p $pass -d $dbname -c ${collectionArray[$i]} -...
How to check Oracle database for long running queries
...SQL that is currently "ACTIVE":-
select S.USERNAME, s.sid, s.osuser, t.sql_id, sql_text
from v$sqltext_with_newlines t,V$SESSION s
where t.address =s.sql_address
and t.hash_value = s.sql_hash_value
and s.status = 'ACTIVE'
and s.username <> 'SYSTEM'
order by s.sid,t.piece
/
This shows locks....
Can I “multiply” a string (in C#)?
...ing this:
public static string Repeat(this string s, int count)
{
var _s = new System.Text.StringBuilder().Insert(0, s, count).ToString();
return _s;
}
I think I pulled that one from Stack Overflow some time ago, so it is not my idea.
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How to uninstall editable packages with pip (installed with -e)
...tualenv}/lib/python2.7/site-packages/ (if not using virtualenv then {system_dir}/lib/python2.7/dist-packages/)
remove the egg file (e.g. distribute-0.6.34-py2.7.egg) if there is any
from file easy-install.pth, remove the corresponding line (it should be a path to the source directory or of an egg ...