大约有 16,000 项符合查询结果（耗时：0.0220秒） [XML]
Handling Dialogs in WPF with MVVM
...ser to an ajax type control.
This is very useful:
<BooleanToVisibilityConverter x:Key="booltoVis" />
as in:
<my:ErrorControl Visibility="{Binding Path=ThereWasAnError, Mode=TwoWay, Converter={StaticResource booltoVis}, UpdateSourceTrigger=PropertyChanged}"/>
Here's how I have one ...
Python: List vs Dict for look up table
...
@John Fouhy: the ints are not stored in the hash table, only pointers, i.e. hou have 40M for the ints (well, not really when a lot of them are small) and 60M for the hash table. I agree that it's not that much of a problem nowadays, still it'...
Comparing Dates in Oracle SQL
...
Single quote must be there, since date converted to character.
Select employee_id, count(*)
From Employee
Where to_char(employee_date_hired, 'DD-MON-YY') > '31-DEC-95';
share
...
What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?
...not used to get an identity, it's used to create an identity in a select...into query.
The session is the database connection. The scope is the current query or the current stored procedure.
A situation where the scope_identity() and the @@identity functions differ, is if you have a trigger on th...
How do you create a transparent demo screen for an Android app?
...
In your first activity find the view you wish to point to (findViewById). Then get its position relative to the root layout using this method. Send position to overlay activity in the intent. Do proper alignment.
– Benito Bertoli
Aug 31 ...
g++ undefined reference to typeinfo
...the error message you asked about.
It's very similar to the code:
extern int i;
int *pi = &i;
which states that the integer i is declared in another compilation unit which must be resolved at link time (otherwise pi can't be set to it's address).
...
Render Partial View Using jQuery in ASP.NET MVC
...oller has an action named details that does:
public ActionResult Details( int id )
{
var model = ...get user from db using id...
return PartialView( "UserDetails", model );
}
This is assuming that your partial view is a container with the id detailsDiv so that you just replace the entire...
Is there an auto increment in sqlite?
...Lite table whether you ask for it or not.
If you include a column of type INTEGER PRIMARY KEY, that column points at (is an alias for) the automatic ROWID column.
ROWID (by whatever name you call it) is assigned a value whenever you INSERT a row, as you would expect. If you explicitly assign a no...
On Duplicate Key Update same as insert
...ere would be no need to re-update it.
Alternatively, you can use:
INSERT INTO table (id,a,b,c,d,e,f,g)
VALUES (1,2,3,4,5,6,7,8)
ON DUPLICATE KEY
UPDATE a=a, b=b, c=c, d=d, e=e, f=f, g=g;
To get the id from LAST_INSERT_ID; you need to specify the backend app you're using for the same.
For L...
How to handle configuration in Go [closed]
...ration{}
err := decoder.Decode(&configuration)
if err != nil {
fmt.Println("error:", err)
}
fmt.Println(configuration.Users) // output: [UserA, UserB]
share
|
improve this answer
|
...