大约有 40,000 项符合查询结果（耗时：0.0396秒） [XML]
Html helper for
... (Note that FileExtensionsAttribute is available in MvcFutures. It will validate file extensions client side and server side.)
public class ViewModel
{
[Required, Microsoft.Web.Mvc.FileExtensions(Extensions = "csv",
ErrorMessage = "Specify a CSV file. (Comma-separated values)")]
...
.htaccess rewrite to redirect root URL to subdirectory
...
@GamErix This would be resolved to /aboveSubDir by either the browser or by the server.
– Gumbo
Jul 27 '12 at 5:47
|
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MySQL vs MongoDB 1000 reads
...form:
One index lookup on the collection (assuming the entity is fetched by id)
Retrieve the contents of one database page (the actual binary json document)
So a b-tree lookup, and a binary page read. Log(n) + 1 IOs. If the indexes can reside entirely in memory, then 1 IO.
In MySQL with 20 tabl...
Easy way to turn JavaScript array into comma-separated list?
...list? (I know how to iterate through the array and build the string myself by concatenation if that's the only way.)
17 Ans...
Get filename and path from URI from mediastore
...low to go look things up in the database.
You can get a bitmap from a uri by giving an input stream to the factory like you give a file to the factory:
InputStream is = getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(is);
is.close();
...
How to estimate how much memory a Pandas' DataFrame will need?
...
df.memory_usage() will return how many bytes each column occupies:
>>> df.memory_usage()
Row_ID 20906600
Household_ID 20906600
Vehicle 20906600
Calendar_Year 20906600
Model_Year 20906600
...
To include indexes, pass ...
Convert JavaScript string in dot notation into an object reference
...w would you turn this into a setter as well? Not only returning the values by path, but also setting them if a new value is sent into the function? – Swader Jun 28 at 21:42
(sidenote: sadly can't return an object with a Setter, as that would violate the calling convention; commenter seems to ins...
Entity Framework 4 Single() vs First() vs FirstOrDefault()
...overview of the different methods:
Find() - when you want to get an item by primary key. This will return null if it can't find an item. It will look in the context before going to the database (as pointed out by Yaron in the comments) which can be an important efficiency factor if you need to get...
How to position text over an image in css
...
How about something like this: http://jsfiddle.net/EgLKV/3/
Its done by using position:absolute and z-index to place the text over the image.
#container {
height: 400px;
width: 400px;
position: relative;
}
#image {
position: absolute;
left: 0;
top: 0;
}
#text {
z-...
Turning a Comma Separated string into individual rows
...ing > ''
)
SELECT
SomeID,
OtherID,
DataItem
FROM tmp
ORDER BY SomeID
-- OPTION (maxrecursion 0)
-- normally recursion is limited to 100. If you know you have very long
-- strings, uncomment the option
Output
SomeID | OtherID | DataItem
--------+---------+----------
1 | 9...