大约有 40,000 项符合查询结果（耗时：0.0561秒） [XML]
Why use 'virtual' for class properties in Entity Framework model definitions?
...nternally the code looks more like this:
public ICollection<RSVP> get_RSVPs()
{
return _RSVPs;
}
public void set_RSVPs(RSVP value)
{
_RSVPs = value;
}
private RSVP _RSVPs;
That's why they're marked as virtual for use in the Entity Framework, it allows the dynamically created classe...
How to unzip files programmatically in Android?
...
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
– Lou Morda
Jul 27 '12 at 22:00
...
Iterate over a list of files with spaces
...arr[@]}
do
newname=`echo "${arr[$i]}" | sed 's/stupid/smarter/; s/ */_/g'`;
mv "${arr[$i]}" "$newname"
done
${!arr[@]} expands to 0 1 2 so "${arr[$i]}" is the ith element of the array. The quotes around the variables are important to preserve the spaces.
The result is three renamed fi...
In C++, is it still bad practice to return a vector from a function?
... Guidelines.
Let's compare:
std::vector<int> BuildLargeVector1(size_t vecSize) {
return std::vector<int>(vecSize, 1);
}
with:
void BuildLargeVector2(/*out*/ std::vector<int>& v, size_t vecSize) {
v.assign(vecSize, 1);
}
Now, suppose we need to call these methods ...
Scala downwards or decreasing for loop?
... answered May 13 '14 at 21:54
LP_LP_
92477 silver badges1919 bronze badges
...
How can I export tables to Excel from a webpage [closed]
...ar">lfrtip',
"oTableTools": {
"sSwfPath": "/swf/copy_cvs_xls_pdf.swf"
}
} );
} );
So, quick to deploy, no browser limitations, no server-side language required, and most of all very EASY to understand. It's a win-win. The one thing it does have limits on, thoug...
Accessing MP3 metadata with Python [closed]
...ecific tag versions can be selected:
tag.link("/some/file.mp3", eyeD3.ID3_V2)
tag.link("/some/file.mp3", eyeD3.ID3_V1)
tag.link("/some/file.mp3", eyeD3.ID3_ANY_VERSION) # The default.
Or you can iterate over the raw frames:
tag = eyeD3.Tag()
tag.link("/some/file.mp3")
for frame in tag.fra...
How to allow to accept only image files?
...e or not.
Check if image file is an actual image or fake image
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
}
else {
echo "F...
Replace input type=file by an image
...ch would act exactly as an input type file (show the dialog box, and same $_FILE on submitted page).
I found some workaround here , and this interesting one too (but does not work on Chrome =/).
...
Find difference between timestamps in seconds in PostgreSQL
...
Try:
SELECT EXTRACT(EPOCH FROM (timestamp_B - timestamp_A))
FROM TableA
Details here: EXTRACT.
share
|
improve this answer
|
follow
...