Where can I find the documentation for ruby qt?
(ex. rdoc)
There is also this http://techbase.kde.org/Development/Languages/Ruby
Well you can use the rbqtapi program to find which functions have been implemented, but it almost identically matches the Qt library. The only main difference is objects like QPushButton are actually named Qt::PushButton.
Related
I want to compare multiple sentences and find out the similarity between them. I have installed the WordNet::Similarity module. But I am not getting any way to how to use it.
Thanks in advance.
If you choose to use a module the bare minimum you need to do is read the documentation. There is a section called Typical usage examples. Other than that the distribution itself has examples included.
I would like to know which programming languages can be called by matlab.
for example I am quiet sure that matlab can use C function and maybe java.
I need this stuff for an industrial project so I need something that works well.
For example I have found some tutorial to call python function in matlab but they look to me not very good and stable solution.
I am not an expert of the field and my knowledge of matlab is very limited. So please be patience with the answer.
This project is related to machine learning and the software will probably run on a cluster.
EDIT according to this post Embedding Python in MATLAB seems that there are problem when importing numpy using python.
The only reason to use python in this environment is the numpy library.
Without that it is almost useless to me.
Do you think that I will encounter similar problem using java or c calling some mathematics libraries?
Most interfaces are listed here:
http://www.mathworks.de/de/help/matlab/external-interfaces.html
For Python I see different solutions:
COM on Windows platforms. This requires to register an application, check if this is possible and allowed on the cluster.
XMLRPC or SOAP. You may need to use Java-Classes in Matlab, but as you already realised this is very simple. Verify that the cluster has a Java VM available, many run matlab without java.
You can embed python code into c, which allows you to write mex functions which run c code: http://docs.python.org/2/extending/embedding.html
Use the command line interface for python.
Besides the documented limitations, I don't see any problem with these solution. If you are familiar with C or Matlab, I would choose the second or third option. This allows you to write a wrapper to access python with a very fundamental knowledge of matlab.
There are two main methods to achieve this:
Write MEX functions, which is basically C/C++ or Fortran methods, which use Matlab-specific API. You can then call these methods like you would any function written in M-language file. This is described here.
Call external libraries written in Java, .Net, C/C++, and COM servers. This is described here.
Both methods require good understanding of what you are doing, although I would argue that writing MEX function is much harder then referencing an existing library.
I'm not sure about programming language but You can do it by EXE file by running run('C:\someCompiledProgram.exe')
And if you need result you can use:
[status, result] = system('command')
You can read about it here:
http://nf.nci.org.au/facilities/software/Matlab/techdoc/ref/system.html
Just starting to learn scala for a new project. Have got to the point where I would like to define different properties files for the different environments the app is going to run on, ideally in a similar way to Rails - very lightweight, just one different properties file per environment that is loaded based on its name. I don't really care if it's a java properties file, YML or scala code.
In the spirit of not reinventing the wheel I've been looking to see if there is some accepted standard Scala way of doing this but I can't find one, I've found a few similar but not identical questions here where people suggest using system properties in the startup script but this feels like it would end up being a nightmare.
I could obviously implement it if needs be but feels like the sort of thing that should already exist. So - does it?
I'm using sbt if that makes a difference.
I know of Configgy. Also, Akka/Play 2.0 will be using Config, which looks nice too. See blog about the latter.
Basically, Configgy has been used for a while now, but has been deprecated, while Config will be all-new. However, having Config as the default Typesafe Stack configuration tool will probably make it the preferred tool for that pretty fast.
I have written a Configgy replacement called Configrity. It can use different input formats (like YAML), it's immutable, supports functional patterns and uses type class to convert automatically the values to the desired type.
I have written BeeConfig, a replacement for java.util.Properties except that it is a Scala API and uses UTF-encoded configuration files. It supports string interpolation, chaining and a bunch of other features. But its main objective is simplicity.
Bitbucket | Blog post
Rick
I'm looking for a directory of perl modules which are perl only. That means (in DSLIP speak):
Perl-only, no compiler needed, should be platform independent
As far as I see the well known search engines does not allow to search in this category only. Am I wrong? Maybe there is a nice way to get a complete module list...?
http://deps.cpantesters.org/ shows whether a module is not pure-perl. The criteria are explained in A Brief Note on Purity warnings, the source implementing this is somewhere in http://www.cantrell.org.uk/cgit/cgit.cgi/cpandeps/.
Combine this with visitcpan to get data for every distribution.
When using keys %:: to get a list of the currently loaded root namespaces, the Internals:: package is loaded by default (along with UNIVERSAL:: and a few others). However, I haven't found any documentation for the functions in Internals::
keys %{Internals::} returns SvREFCNT hv_clear_placeholders hash_seed SvREADONLY HvREHASH rehash_seed
All of these can probably be looked up in Perl's C API docs, but is there any Perl level documentation for them? Is the package stable? It's used by several core modules (Hash::Util for one), so I imagine it is, but the lack of documentation is a bit troubling.
I didn't see Internals.pm in the Perl distribution (different name maybe?), and it is not the Internals module up on CPAN.
Note: I fully understand that the functions in Internals:: are potentially dangerous, and I do not have any particular use in mind. I was reading through Hash::Util's source and came across it.
IIRC the code is not Internals.pm but libinternals.c. It looks like they used to be in universal.c in Perl 5.8 but got migrated out.
As per 03/2009 and Perl 5.10 they were not documented as per this perlmonks thread.
Also, in the same thread, ysth states:
Undocumented things in universal.c
should not be depended on; they should
only be used by core modules. They
aren't documented on purpose, to allow
them to be changed whenever and
however necessary. For those purposes,
the code is good enough documentation.