大约有 41,000 项符合查询结果（耗时：0.0390秒） [XML]
AppInventor2有没有删除撤销功能？ - App应用开发 - 清泛IT社区，为创新赋能！
...法恢复了，有时真的有些不太方便。
不过不用着急，中文网已经推出了“复制屏幕”功能，可以完美复制屏幕中的普通组件、图片、附件、拓展、代码块。
修改之前，可以先复制以备份当前屏幕，这样修改起来更轻松~
复...
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...
Cluster analysis in R: determine the optimal number of clusters
...v18/i06/paper
# http://www.stat.washington.edu/research/reports/2006/tr504.pdf
#
library(mclust)
# Run the function to see how many clusters
# it finds to be optimal, set it to search for
# at least 1 model and up 20.
d_clust <- Mclust(as.matrix(d), G=1:20)
m.best <- dim(d_clust$z)[2]
cat("mod...
Remove header and footer from window.print()
...gain. If you need support for a browser that can't hable, you can create a PDF on the fly and print that (you can create a self-printing PDF embedding JavaScript on it), but that's a huge hassle.
share
|
...
关于美团大众点评的新名字的哥德巴赫猜想 - 资讯 - 清泛网 - 专注C/C++及内核技术
...司英文名字已经注册为“China Internet Plus Group”，直翻成中文就是“中国互联网+”。真是吓死宝宝了……如果是A股上市公司，这不得来个七八个涨停？
如果传言属实的话，美团和大众点评合并后新公司的野心可真够大的。不过...
Developing GUIs in Python: Tkinter vs PyQt [closed]
...eading (I used it and it works like a charm),... I even use it to generate PDF's (no other external libs needed). I would recommend Mark Summerfield's book though 'Rapid GUI Programming with Python and Qt' to get you on speed. Keep in mind that Qt comes with a GUI builder (Qt designer) which is the ...
Get MIME type from filename extension
...n/octet-stream"},
{".pcz", "application/octet-stream"},
{".pdf", "application/pdf"},
{".pfb", "application/octet-stream"},
{".pfm", "application/octet-stream"},
{".pfx", "application/x-pkcs12"},
{".pgm", "image/x-portable-graymap"},
{".pic", "i...
Shell script to send email [duplicate]
...oo@bar.com"
TO="foo@bar.com"
SUBJECT="test é"
MSG="BODY éé"
FILES="fic1.pdf fic2.pdf"
# http://fr.wikipedia.org/wiki/Multipurpose_Internet_Mail_Extensions
SUB_CHARSET=$(echo ${SUBJECT} | file -bi - | cut -d"=" -f2)
SUB_B64=$(echo ${SUBJECT} | uuencode --base64 - | tail -n+2 | head -n+1)
NB_FILE...
libevent对比libev的基准测试 - C/C++ - 清泛网 - 专注C/C++及内核技术
...接收数据。
使用的基准程序是bench.c，取自 libevent 发行版，经过修改以收集每次测试迭代的总时间，可选择启用事件观察器的超时以及可选择使用本机 libev API 并以不同方式输出时间。
对于 libevent，使用版本 1.4.3，而对于 libev...
How do I use spaces in the Command Prompt?
...
set "CMD=C:\Program Files (x86)\PDFtk\bin\pdftk"
echo cmd /K ""%CMD%" %D% output trimmed.pdf"
start cmd /K ""%CMD%" %D% output trimmed.pdf"
this worked for me in a batch file
shar...