大约有 48,000 项符合查询结果（耗时：0.0445秒） [XML]
Why does Eclipse complain about @Override on interface methods?
...
Project specific settings may be enabled. Select your project Project > Properties > Java Compiler, uncheck the Enable project specific settings or change Jdk 1.6 and above not forgetting the corresponding JRE.
Incase it does not work, remove your project from...
Splitting a string into chunks of a certain size
...unkSize)
{
return Enumerable.Range(0, str.Length / chunkSize)
.Select(i => str.Substring(i * chunkSize, chunkSize));
}
Please note that additional code might be required to gracefully handle edge cases (null or empty input string, chunkSize == 0, input string length not divisible by...
How to sort the result from string_agg()
...
With postgres 9.0+ you can write:
select string_agg(product,' | ' order by product) from "tblproducts"
Details here.
share
|
improve this answer
|...
UITapGestureRecognizer breaks UITableView didSelectRowAtIndexPath
...ch.view isDescendantOfView:autocompleteTableView]) {
// Don't let selections of auto-complete entries fire the
// gesture recognizer
return NO;
}
return YES;
}
That took care of it. Hopefully this will help others as well.
...
How to make ng-repeat filter out duplicate results
... unique filter) and use it directly in the ng-options (or ng-repeat).
<select ng-model="orderProp" ng-options="place.category for place in places | unique:'category'">
<option value="0">Default</option>
// unique options from the categories
</select>
...
How can I easily convert DataReader to List? [duplicate]
... writing an extension method for this:
public static IEnumerable<T> Select<T>(this IDataReader reader,
Func<IDataReader, T> projection)
{
while (reader.Read())
{
yield return projection(reader);
}
}
You can then use LINQ...
How do you list the primary key of a SQL Server table?
...
SELECT Col.Column_Name from
INFORMATION_SCHEMA.TABLE_CONSTRAINTS Tab,
INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE Col
WHERE
Col.Constraint_Name = Tab.Constraint_Name
AND Col.Table_Name = Tab.Table_Name
...
Export Postgresql table data using pgAdmin
...
Just right click on a table and select "backup". The popup will show various options, including "Format", select "plain" and you get plain SQL.
pgAdmin is just using pg_dump to create the dump, also when you want plain SQL.
It uses something like this: ...
Checking if a field contains a string
...
The selected answer didn't work for me, but this one did (I'm executing mongo queries via docker exec commands) I think this one should be the selected answer because it appears to be more versatile.
– Arthu...
Create batches in linq
... int maxItems)
{
return items.Select((item, inx) => new { item, inx })
.GroupBy(x => x.inx / maxItems)
.Select(g => g.Select(x => x.item));
}
}
and the usage would be:
List<int> list = new L...