大约有 48,000 项符合查询结果（耗时：0.0599秒） [XML]
How can I pass a parameter to a setTimeout() callback?
...st isn't right.
UPDATE:
As Hobblin said in his comments to the question, now you can pass arguments to the function inside setTimeout using Function.prototype.bind().
Example:
setTimeout(postinsql.bind(null, topicId), 4000);
...
How to concatenate strings of a string field in a PostgreSQL 'group by' query?
...in any aggregate expression; otherwise, the order is undefined. So you can now write:
SELECT company_id, string_agg(employee, ', ' ORDER BY employee)
FROM mytable
GROUP BY company_id;
Or indeed:
SELECT string_agg(actor_name, ', ' ORDER BY first_appearance)
PostgreSQL 8.4 or later:
PostgreSQL ...
Setting Objects to Null/Nothing after use in .NET
... someType = new SomeType();
someType.DoSomething();
// someType is now eligible for garbage collection
// ... rest of method not using 'someType' ...
}
will allow the object referred by someType to be GC'd after the call to "DoSomething" but
void foo()
{
var someType = n...
How to list the files inside a JAR file?
... hey thanks... been looking for a way to do this for a few hours now !!
– Newtopian
May 19 '10 at 9:17
9
...
LINQ: Distinct values
...
IEqualityComparer<TKey> comparer)
{
HashSet<TKey> knownKeys = new HashSet<TKey>(comparer);
foreach (TSource element in source)
{
if (knownKeys.Add(keySelector(element)))
{
yield return element;
}
}
}
(If you pass...
How to disable and re-enable console logging in Python?
... this:
logger = logging.getLogger('my-logger')
logger.propagate = False
# now if you use logger it will not log to console.
This will prevent logging from being send to the upper logger that includes the console logging.
...
Which is faster: multiple single INSERTs or one multiple-row INSERT?
...
I know I'm answering this question almost two and a half years after it was asked, but I just wanted to provide some hard data from a project I'm working on right now that shows that indeed doing multiple VALUE blocks per insert...
Export Data from mysql Workbench 6.0
...
mysqldump: [ERROR] unknown variable 'delayed-insert=FALSE'
This error occurs on various systems and can be temporarily fixed by:
Going to the appropriate directory depending on the system:
a) Windows: C:\Program Files\MySQL\MySQL Workbench 6....
How to tell git to ignore individual lines, i.e. gitignore for specific lines of code [duplicate]
...'t work, and it also broke the previously working filter for python-files. Now I get this error all the time "error: external filter sed". Do you know how I can fix this or simply delete all filters?
– PaulMag
Nov 24 '14 at 13:27
...
Using the scrollwheel in GNU screen
...
Yes, I know about scrollback mode. I was hoping that I would not have to manually enter scrollback mode in order to use the mouse. Thanks.
– JesperE
Jan 24 '09 at 20:34
...