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Odd behavior when Java converts int to byte?
...umber scheme the most significant bit specifies the sign of the number. If more bits are needed, the most significant bit ("MSB") is simply copied to the new MSB.
So if you have byte 255: 11111111
and you want to represent it as an int (32 bits) you simply copy the 1 to the left 24 times.
Now, one...
How do I create multiple submit buttons for the same form in Rails?
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Changing the form action attribute on the fly is a more brittle solution. Using the commit attribute is less so. You could as an alternative wrap the second submit button inside a different form and pass a parameter that needs to be changed to the same action. But it is not m...
Merge PDF files
... documents page by page,
* merging documents page by page,
(and much more)
Here's a sample program that works with both versions.
#!/usr/bin/env python
import sys
try:
from PyPDF2 import PdfFileReader, PdfFileWriter
except ImportError:
from pyPdf import PdfFileReader, PdfFileWriter
...
How to export revision history from mercurial or git to cvs?
...l but it helps to make your revision history that's imported from CVS look more git-like (see man git-cvsimport for more info on how this is set up).
Depending on the size and history of the CVS repository, this first import will take a VERY long time. You can add a -v to the above command if you w...
Creating a textarea with auto-resize
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Why do C++ libraries and frameworks never use smart pointers?
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The bottom line is more like: if you want to distribute a prebuild version you have to do so for every compiler you want to support.
– josefx
Apr 27 '12 at 8:17
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How do you test that a Python function throws an exception?
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What's the -practical- difference between a Bare and non-Bare repository?
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Download a file from NodeJS Server using Express
...r is concerned, the file's name is just 'download', so you need to give it more info by using another HTTP header.
res.setHeader('Content-disposition', 'attachment; filename=dramaticpenguin.MOV');
You may also want to send a mime-type such as this:
res.setHeader('Content-type', 'video/quicktime'...
Nodejs Event Loop
... a simple yet optimized event loop for the process to run on. You can read more about libev here.
LibEio is a library to perform input output asynchronously. It handles file descriptors, data handlers, sockets etc. You can read more about it here here.
LibUv is an abstraction layer on the top of lib...