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MongoDB与内存 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术
...缓存的作用，如果是写操作，内存还可以把随机的写操作转换成顺序的写操作，总之可以大幅度提升性能。MongoDB并不干涉内存管理工作，而是把这些工作留给操作系统的虚拟内存管理器去处理，这样做的好处是简化了MongoDB的工...
How can I scale an image in a CSS sprite
...c="spacer.png">
<img class="sprite" alt="icon" src="sprite_800x160.jpg">
</a>
<a class="stretchy s2" href="#">
<img class="spacer" alt="" src="spacer.png">
<img class="sprite" alt="icon" src="sprite_800x160.jpg">
</a>
<a class="stretchy s3" href="#">...
How to pipe input to a Bash while loop and preserve variables after loop ends
...
This function makes duplicates $NUM times of jpg files (bash)
function makeDups() {
NUM=$1
echo "Making $1 duplicates for $(ls -1 *.jpg|wc -l) files"
ls -1 *.jpg|sort|while read f
do
COUNT=0
while [ "$COUNT" -le "$NUM" ]
do
cp $f ${f//sm/${COUNT}sm}
((COUN...
Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requir
...'.$fid.'/picture?type=large');
$file = dirname(__file__).'/avatar/'.$fid.'.jpg';
file_put_contents($file, $img);
Where $fid is your user id on Facebook.
NOTE: In case of images marked as "18+" you will need a valid access_token from a 18+ user:
<img src="//graph.facebook.com/{{fid}}/picture?a...
Bootstrap 3 Navbar with Logo
...<a class="navbar-brand myLogo" href="#">
<img src="yourLogo.jpg" />
</a>
</div>...
add a class, for example myLogo, and an img (your logo)
<a class="navbar-brand myLogo" href="#"><img src="yourLogo.jpg" /></a>.
Add CSS
.myLogo {
padding: ...
application/x-www-form-urlencoded or multipart/form-data?
..."
... multipart data
201 Created
Location: http://imageserver.org/../foo.jpg
In later resources you could simply inline the binary resource as link:
<main-resource&gt
...
<link href="http://imageserver.org/../foo.jpg"/>
</main-resource>
...
C++ HICON与HBITMAP相互转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++ HICON与HBITMAP相互转换HBITMAP转HICON 方法一：HICON HICONFromCBitmap( CBitmap& bitmap){BITMAP bmp;bitmap.GetBitmap(&bmp);HBITMAP hbmMask = ::CreateCompatibleBitm...HBITMAP转HICON
方法一：
HICON HICONFromCBitmap( CBitmap& bitmap)
{
BITMAP bmp;
bitmap.GetBitmap(&bmp);
...
image.onload event and browser cache
...;
img.onload = function () {
alert("image is loaded");
}
img.src = "img.jpg";
Fiddle - tested on latest Firefox and Chrome releases.
You can also use the answer in this post, which I adapted for a single dynamically generated image:
var img = new Image();
// 'load' event
$(img).on('load', fun...
Django Rest Framework File Upload
...parser_classes = (FileUploadParser, )
def post(self, request, format='jpg'):
up_file = request.FILES['file']
destination = open('/Users/Username/' + up_file.name, 'wb+')
for chunk in up_file.chunks():
destination.write(chunk)
destination.close() # Fi...
How can I extract a good quality JPEG image from a video file with ffmpeg?
...
To output a series of images:
ffmpeg -i input.mp4 -qscale:v 2 output_%03d.jpg
See the image muxer documentation for more options involving image outputs.
To output a single image at ~60 seconds duration:
ffmpeg -ss 60 -i input.mp4 -qscale:v 4 -frames:v 1 output.jpg
This will work with any video i...