大约有 41,000 项符合查询结果（耗时：0.0650秒） [XML]
How to detect input type=file “change” for the same file?
I want to fire an event when the user select a file. Doing so with .change event it works if the user changes the file every time.
...
Moving and vanishing lines of code; trouble with Eclipse's XML Editor
...t to Help > Install new software > What is already installed? Then I selected all the Android stuff from Google, selected Update, and now life is good again.
– rodrigo-silveira
Jan 7 '13 at 16:22
...
Generate random numbers using C++11 random library
...;
}
};
thread_local backoff_time_t backoff_time;
int main(int argc, char** argv) {
double x1 = backoff_time.rand();
double x2 = backoff_time.rand();
double x3 = backoff_time.rand();
double x4 = backoff_time.rand();
return 0;
}
~
...
How to get database structure in MySQL via query
...CHEMA.TABLES table. It contains metadata about all your tables.
Example:
SELECT * FROM `INFORMATION_SCHEMA`.`TABLES`
WHERE TABLE_NAME LIKE 'table1'
The advantage of this over other methods is that you can easily use queries like the one above as subqueries in your other queries.
...
Case conventions on element names?
...inent examples:
<a>1</a><b>1</b>
<xsl:value-of select="a+b"/>
outputs 2, as expected
<a>1</a><b>1</b>
<xsl:value-of select="a-b"/>
DOES NOT ERROR, BUT OUTPUTS NOTHING AT ALL
In the above code, you must put at least one space before a su...
Xcode 4, Core Data Model Version - Set Current Version
...d "View" button at the top right of the window).
In the Utilities sidepane select the File inspector (little paper icon on the top left)
You will see "Versioned Core Data Model" as a group so just change the "Current" drop-down to your new version.
...
How to style the parent element when hovering a child element?
I know that there does not exist a CSS parent selector , but is it possible to style a parenting element when hovering a child element without such a selector?
...
How to find all tables that have foreign keys that reference particular table.column and have values
...
Here you go:
USE information_schema;
SELECT *
FROM
KEY_COLUMN_USAGE
WHERE
REFERENCED_TABLE_NAME = 'X'
AND REFERENCED_COLUMN_NAME = 'X_id';
If you have multiple databases with similar tables/column names you may also wish to limit your query to a particul...
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: ...
Can a Windows batch file determine its own file name?
...hat I find interesting is that %nx0 won't work, given that we know the '~' char usually is used to strip/trim quotes off of a variable.
share
|
improve this answer
|
follow
...