大约有 44,000 项符合查询结果（耗时：0.0556秒） [XML]
Divide a number by 3 without using *, /, +, -, % operators
...gt;> 2, sum);
num = add(num >> 2, num & 3);
}
if (num == 3)
sum = add(sum, 1);
return sum;
}
As Jim commented this works, because:
n = 4 * a + b
n / 3 = a + (a + b) / 3
So sum += a, n = a + b, and iterate
When a == 0 (n < 4), sum += floor(n / 3); i....
Maximum length of HTTP GET request
...
The limit is dependent on both the server and the client used (and if applicable, also the proxy the server or the client is using).
Most web servers have a limit of 8192 bytes (8 KB), which is usually configurable somewhere in the server configuration. As to the client side matter, the HT...
Convert Base64 string to an image file? [duplicate]
...ase64_string, $output_file) {
// open the output file for writing
$ifp = fopen( $output_file, 'wb' );
// split the string on commas
// $data[ 0 ] == "data:image/png;base64"
// $data[ 1 ] == <actual base64 string>
$data = explode( ',', $base64_string );
// we coul...
When to use ref and when it is not necessary in C#
... and also have some other worker functions that I pass the object to to modify the state. I have been passing it by ref to the worker functions. However I came across the following function.
...
Access-Control-Allow-Origin Multiple Origin Domains?
...e client, compare that to the list of domains you would like to allow, and if it matches, echo the value of the Origin header back to the client as the Access-Control-Allow-Origin header in the response.
With .htaccess you can do it like this:
# ----------------------------------------------------...
PHP Get Site URL Protocol - http vs https
... current site url protocol but I don't have SSL and don't know how to test if it works under https. Can you tell me if this is correct?
...
How can I check whether a option already exist in select by JQuery
...
This evaluates to true if it already exists:
$("#yourSelect option[value='yourValue']").length > 0;
share
|
improve this answer
|
...
How can I match on an attribute that contains a certain string?
...]
However, it will also find partial matches like class="catag bobtag".
If you don't want partial matches, see bobince's answer below.
share
|
improve this answer
|
follow...
Save An Image To Application Documents Folder From UIView On IOS
...want to store these images in Core Data, since that can impact performance if the data set grows too large. Better to write the images to files.
NSData *pngData = UIImagePNGRepresentation(image);
This pulls out PNG data of the image you've captured. From here, you can write it to a file:
NSArray...
git reset --hard HEAD leaves untracked files behind
...-f -d to get rid of untracked files and directories in your working copy.
If you need to reset the whole repository to master including all git submodules, run this script:
git reset --hard HEAD
git clean -f -d
git checkout master
git fetch origin master
git reset --hard origin/master
git pull
git...