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Very large matrices using Python and NumPy
... simple as:
data = table[row_from:row_to]
The HDF library takes care of reading in the relevant chunks of data and converting to NumPy.
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What is the “-->” operator in C++?
After reading Hidden Features and Dark Corners of C++/STL on comp.lang.c++.moderated , I was completely surprised that the following snippet compiled and worked in both Visual Studio 2008 and G++ 4.4.
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Log4net does not write the log in the log file
...l
log4net.Config.XmlConfigurator.Configure();
somewhere to make log4net read your configuration? E.g. in Global.asax:
void Application_Start(object sender, EventArgs e)
{
// Code that runs on application startup
// Initialize log4net.
log4net.Config.XmlConfigurator.Configure();
}
...
Exit codes in Python
...exit 0 in the case everything was ok. Type a command, then echo $?: if you read 0, it returned without an error. The idea is to have standard tests. If the code xyz.py did not encounter any error, it SHOULD return 0!
– Bruno von Paris
Oct 15 '12 at 9:20
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In the shell, what does “ 2>&1 ” mean?
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Mon Jan 7 13:19:01 CET 2013
Unsetting this option and/or inquiring if already set.
$ set -o | grep noclobber
noclobber on
$ set +o noclobber
$ set -o | grep noclobber
noclobber off
$ date > $testfile ; cat $testfile
Mon Jan 7 13:24:27 CET 2013
$ rm $testfile
###4 - La...
Where to host an Open Source Project: CodePlex, Google Code, SourceForge? [closed]
I have been reading through the backlog of answered questions on SO regarding "How to promote an open source project". Not surprisingly, many of the answers pointed people to SoureForge/FreshMeat and other sites etc as well as blogging and whatnot. This started me thinking where is the best place to...
If a folder does not exist, create it
...to first create it, and then save my file to this folder. If the folder already exists, then just save the file in it.
17 ...
data.table vs dplyr: can one do something well the other can't or does poorly?
I'm relatively familiar with data.table , not so much with dplyr . I've read through some dplyr vignettes and examples that have popped up on SO, and so far my conclusions are that:
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I didn't find “ZipFile” class in the “System.IO.Compression” namespace
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Thanks for the info. I already had using System.IO.Compression; but then had to add a reference to using System.IO.Compression.FileSystem as you described above to get ZipFile to compile without the OP's original error.
– Hugh S...
Composer killed while updating
...file.
Run composer install on the live server.
composer install will then read from the .lock file, fetching the exact same versions every time rather than finding the latest versions of every package. This makes your app less likely to break, and composer uses less memory.
Read more here: https://...