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Find the extension of a filename in Ruby
...t's really basic stuff:
irb(main):002:0> accepted_formats = [".txt", ".pdf"]
=> [".txt", ".pdf"]
irb(main):003:0> File.extname("example.pdf") # get the extension
=> ".pdf"
irb(main):004:0> accepted_formats.include? File.extname("example.pdf")
=> true
irb(main):005:0> accepted_f...
What is the meaning of single and double underscore before an object name?
...the exact meaning of having leading underscores before an object's name in Python, and the difference between both?
15 Answ...
【Perl】这段简单的print代码为啥没有任何输出？ - Python - 清泛IT社区，为创新赋能！
#!/usr/bin/perl
while(true){
print("begin observe.");
sleep(2);
}复制代码这段代码竟然没有输出，咋回事？
ChatGPT：你的代码没有输出的原因可能是因为缓冲机制。Perl 中的 print 函数默认是带有缓冲的，所以它会在...
Website screenshots
... outputs it in a ps file (ghostscript), then, convert it in a .jpg, .png, .pdf.. can be little slower with complex pages (and don't support all the CSS).
Else, you can use wkhtmltopdf to output a html page in pdf, jpg, whatever..
Accept CSS2.0, use the webkit (safari's wrapper) to render the page.....
Execute a command line binary with Node.js
...ec:
var exec = require('child_process').exec;
var cmd = 'prince -v builds/pdf/book.html -o builds/pdf/book.pdf';
exec(cmd, function(error, stdout, stderr) {
// command output is in stdout
});
If you need to use handle process I/O with streams, such as when you are expecting large amounts of ou...
Attach a file from MemoryStream to a MailMessage in C#
...tem.Net.Mime.MimeTypeNames like System.Net.Mime.MediaTypeNames.Application.Pdf
Based on Mime Type you need to specify correct extension in FileName for instance "myFile.pdf"
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How to download all files (but not HTML) from a website using wget?
...
To filter for specific file extensions:
wget -A pdf,jpg -m -p -E -k -K -np http://site/path/
Or, if you prefer long option names:
wget --accept pdf,jpg --mirror --page-requisites --adjust-extension --convert-links --backup-converted --no-parent http://site/path/
This ...
Workflow for statistical analysis and report writing
... I press "Go", Sweave dumps out a few score .tex files, and I run a little Python script to pdflatex them all. My predecessor spent ~6 weeks each year on these reports; I spend about 3 days (mostly on cleaning data; escape characters are hazardous).
It's very possible that there are better approac...
Capture HTML Canvas as gif/jpg/png/pdf?
...ible to capture or print what's displayed in an html canvas as an image or pdf?
12 Answers
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CoInitialize浅析一 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...769AEFC2 test ch, 10h ;判断标识第4位（从第0位开始）是否置位
769AEFC5 jnz loc_769D9D20 ; 服务器出现意外情况。
769AEFCB mov edx, ebx
769AEFCD and edx, 2
769AEFD0 ...