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What is the reason for performing a double fork when creating a daemon?
... a session leader has no controlling terminal, and opens a terminal device file that is not already associated with a session without using the O_NOCTTY option (see open()), it is implementation-defined whether the terminal becomes the controlling terminal of the session leader. If a process which i...
How to write a bash script that takes optional input arguments?
...tiple arguments, by analogy with the ls command which can take one or more files or by default lists everything in the current directory:
if [ $# -ge 1 ]
then
files="$@"
else
files=*
fi
for f in $files
do
echo "found $f"
done
Does not work correctly for files with spaces in the path, ...
How to load db:seed data into test database automatically?
...k primarily just loads the db/seeds.rb script. Therefore just execute that file to load the data.
load "#{Rails.root}/db/seeds.rb"
# or
Rails.application.load_seed
Where to place that depends on what testing framework you are using and whether you want it to be loaded before every test or just ...
Visual Studio 64 bit?
... of portability issues, Office64bit will still have to support old doc/xls files. I hope. On the other hand I completely agree with him: 90% of apps do not need to be ported to 64bit. Unfortunately that's not 90% of the customers think. They all demand native 64bit now :(
–...
multiprocessing: sharing a large read-only object between processes?
...ing child.
When parent reaches the end, close the pipe. Child gets end of file and finishes normally.
The child parts are pleasant to write because each child simply reads sys.stdin.
The parent has a little bit of fancy footwork in spawning all the children and retaining the pipes properly, bu...
Default value of function parameter
...
If you put the declaration in a header file, and the definition in a separate .cpp file, and #include the header from a different .cpp file, you will be able to see the difference.
Specifically, suppose:
lib.h
int Add(int a, int b);
lib.cpp
int Add(int a, in...
How do you modify a CSS style in the code behind file for divs in ASP.NET?
...om%2fquestions%2f657144%2fhow-do-you-modify-a-css-style-in-the-code-behind-file-for-divs-in-asp-net%23new-answer', 'question_page');
}
);
Post as a guest
Na...
Autoreload of modules in IPython [duplicate]
...d 2
Then your module will be auto-reloaded by default. This is the doc:
File: ...my/python/path/lib/python2.7/site-packages/IPython/extensions/autoreload.py
Docstring:
``autoreload`` is an IPython extension that reloads modules
automatically before executing the line of code typed.
This m...
Error when deploying an artifact in Nexus
...iled to deploy artifacts: Could not transfer artifact" "Failed to transfer file http:///my_artifact. Return code is: 400"
1...
How can I check which version of Angular I'm using?
...e a command line tool.
You can get the version number from the JavaScript file itself.
Header of the current angular.js:
/**
* @license AngularJS v1.0.6
* (c) 2010-2012 Google, Inc. http://angularjs.org
* License: MIT
*/
...