大约有 37,000 项符合查询结果（耗时：0.0293秒） [XML]
Difference Between ViewData and TempData?
...ViewData["City"] = "surat";
return View();
}
try1.cshtm
<table>
<tr>
<th>Name</th>
<th>Twitter</th>
<th>Email</th>
<th>City</th>
<th>Mobile</th>
</tr>
<tr>
<td>@ViewData["...
Linq to Sql: Multiple left outer joins
...se id that was passed in
from category
// left join on categories table if exists
in expenseDataContext.CategoryDtos
.Where(c => c.Id == expense.CategoryId)
.DefaultIfEmpty()
// left join on expense type table if exists
from ...
Which method performs better: .Any() vs .Count() > 0?
...esh look on the problem.
Testing env:
EF 6.1.3, SQL Server, 300k records
Table model:
class TestTable
{
[Key]
public int Id { get; set; }
public string Name { get; set; }
public string Surname { get; set; }
}
Test code:
class Program
{
static void Main()
{
usi...
How would one write object-oriented code in C? [closed]
... (commTcp.open)(commTcp, "bigiron.box.com:5000");
Sort of like a manual vtable.
You could even have virtual classes by setting the pointers to NULL -the behaviour would be slightly different to C++ (a core dump at run-time rather than an error at compile time).
Here's a piece of sample code that...
What's the use of ob_start() in php?
...
$lvs_html = "<div>01 - component header</div>" ; // <table ><tr>" ;
include( "component_contents.php" ) ;
$lvs_html .= "<div>03 - component footer</div>" ; // </tr></table>" ;
return $lvs_html ;
} ;
//----------------------------...
Best way to do nested case statement logic in SQL Server
... NULL
END AS 'calculatedcol1',
col4,
col5 -- etc
FROM table
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#1071 - Specified key was too long; max key length is 767 bytes
...
767 bytes is the stated prefix limitation for InnoDB tables in MySQL version 5.6 (and prior versions). It's 1,000 bytes long for MyISAM tables. In MySQL version 5.7 and upwards this limit has been increased to 3072 bytes.
You also have to be aware that if you set an index on a...
What are the differences between segment trees, interval trees, binary indexed trees and range trees
...n add anything to Lior's answer, but it seems like it could do with a good table.
One Dimension
k is the number of reported results
| | Segment | Interval | Range | Indexed |
|--------------|--------------:|-----------:|---------------:|----------:|
|Preprocessing ...
Subqueries vs joins
...ed as a join in which case it executes the subquery for each record in the table rather then join the table in the subquery against the table you are querying. Some of the more "enterprisey" database are better at this, but they still miss it sometimes.
...
Imitate Facebook hide/show expanding/contracting Navigation Bar
... @Thuy great work man! So I have this working on perfectly on a table view controller except one thing... I have pull to refresh implemented at the top. It gets weird when trying to pull down and refresh. Might there be a workaround for this?
– aherrick
...