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企业级负载平衡简介 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...地大，从而使得单次哈希计算的速度变长，增加恶意人员破解密码的难度。反过来，如果有一百个人或者一千个人同时执行登陆操作，那么这么繁琐的哈希计算将导致登陆服务器产生“忙不过来”的情况。此时我们就需要使用负...
How Do I Use Factory Girl To Generate A Paperclip Attachment?
...tory:
factory :attachment do
supporting_documentation_file_name { 'test.pdf' }
supporting_documentation_content_type { 'application/pdf' }
supporting_documentation_file_size { 1024 }
# ...
end
share
|
...
User recognition without cookies or local storage
...hese)
Web Bugs (less reliable because bugs get fixed, but still useful)
PDF Bug
Flash Bug
Java Bug
Browsers
Click Tracking (many users visit the same series of pages on each visit)
Browsers Finger Print
- Installed Plugins (people often have varied, somewhat unique sets of plugins)
Cached ...
Create two blank lines in Markdown
...on-white-space. The benefit is that in Markdown flavours that include both PDF and HTML output options (including Rmarkdown), it should be understood in the same way for both output types, whereas I'm not sure how PDF output would interpret <br> or &nbsp;
...
淘宝应对双\"11\"的技术架构分析 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...我们选择了每分钟15000转的SAS硬盘，按照一个节点两台机器来计算，单位数据的存储成本约为4.5W/TB。相对应地，“冷数据”我们选择了每分钟7500转的SATA硬盘，单碟上能够存放更多的数据，存储成本约为1.6W/TB。
将冷热数据进行...
Reading and writing binary file
...using namespace std;
int main()
{
ifstream infile;
infile.open("source.pdf",ios::binary|ios::in);
ofstream outfile;
outfile.open("temppdf.pdf",ios::binary|ios::out);
int buffer[2];
while(infile.read((char *)&buffer,sizeof(buffer)))
{
outfile.write((char *)&buffer,sizeof...
Creating a ZIP Archive in Memory Using System.IO.Compression
...MVC
public ActionResult Index()
{
string fileName = "test.pdf";
string fileName1 = "test.vsix";
string fileNameZip = "Export_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".zip";
byte[] fileBytes = System.IO.File.ReadAllBytes(@"C:\test\test.pdf");
by...
Algorithm to implement a word cloud like Wordle
...
More information here: static.mrfeinberg.com/bv_ch03.pdf - Thanks Jonathan.
– Reto Aebersold
Mar 5 '11 at 15:28
...
Shell script to send email [duplicate]
...oo@bar.com"
TO="foo@bar.com"
SUBJECT="test é"
MSG="BODY éé"
FILES="fic1.pdf fic2.pdf"
# http://fr.wikipedia.org/wiki/Multipurpose_Internet_Mail_Extensions
SUB_CHARSET=$(echo ${SUBJECT} | file -bi - | cut -d"=" -f2)
SUB_B64=$(echo ${SUBJECT} | uuencode --base64 - | tail -n+2 | head -n+1)
NB_FILE...
Reserved keywords in JavaScript
...
Joseph, thanks for adding that info. I found that PDF in google, but didn't have time to open and read it all.
– benc
Oct 3 '08 at 17:10
...