swig | software development tool that connects programs | Parser library
kandi X-RAY | swig Summary
kandi X-RAY | swig Summary
SWIG (Simplified Wrapper and Interface Generator). Version: 4.1.0 (in progress). Tagline: SWIG is a compiler that integrates C and C++ with languages including Perl, Python, Tcl, Ruby, PHP, Java, C#, D, Go, Lua, Octave, R, Scheme (Guile, MzScheme/Racket), Scilab, Ocaml. SWIG can also export its parse tree into XML. SWIG reads annotated C/C header files and creates wrapper code (glue code) in order to make the corresponding C/C libraries available to the listed languages, or to extend C/C++ programs with a scripting language. Up-to-date SWIG related information can be found at.
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QUESTION
I have a C function which takes, among other arguments, 3 arrays of differents types :
void create_signal(double ztab[], ..., int *pdata, ..., char ranging[], ...);
and I want to use this function in a Python module using SWIG.
I have already figured out how to use C functions which take in an array with numpy.i typemaps :
%apply (double* INPLACE_ARRAY1, int DIM1) {(double xtab[], int length)}
for instance,
or even 2 arrays of same type :
apply (double* INPLACE_ARRAY1, int DIM1) {(double xtab[], int length_x), (double ytab[], int length_y)}
but I can't figure out if it is possible to do so if the arrays are of different types (in my case, int
, double
, and char
), or if I should rewrite my own typemap.
Thanks for your help !
...ANSWER
Answered 2021-Jun-03 at 18:09Anyway, here goes an example
test.h
QUESTION
I have some Python classes being generated automatically using SWIG and I want to extend them.
The problem is, those classes have another method other than __init__
, called create
that returns a class instance (they are the real init).
I want to extend those classes with new methods but keep the original name.
I tried to implement __new__
method but it returns an instance of the parent class
I get why it happens, but I can't seem to find a way to change it while keeping the create
methods.
Let me show you an example with my current implementation attempt in order to explain:
File a:
...ANSWER
Answered 2021-May-28 at 20:59Here goes a simple example. I have created a simple static method for creating objects in C++ and wrapped this with SWIG. Afterwards, I extend the class with the same name for changing the method slightly.
example.h
QUESTION
I'm trying to get a RTL-SDR source block (or osmo sdr, since they both work) in GNU Radio, and it apparently must be obtained via the following command lines:
...ANSWER
Answered 2021-May-28 at 11:14Okay I got it!
This guy goes over the required libraries
https://www.youtube.com/watch?v=2IWtEkAHXFI
I was missing swig, and afterwards I was also missing liborc-0.4-dev
They can be installed via:
QUESTION
I get ValueError: xxx not found in gym registry, you maybe meant
when trying to register a custom environment in stable baselines 3. I tried the following commands:
ANSWER
Answered 2021-May-21 at 00:53This problem can be resolved with --gym-packages gym_basic
QUESTION
I see a java example about how to pass binary data in director callback from C++ to java , https://github.com/swig/swig/blob/90cdbee6a69d13b39d734083b9f91069533b0d7b/Examples/test-suite/director_binary_string.i , I'd like to do the same thing on C# with the same swig directive,
...ANSWER
Answered 2021-May-20 at 01:09Finally I got an alternative solution. Instead of passing binary data to C# side from C++, within the callback, the caller from C# proactively retrieves binary data. For example
Swig Interface
QUESTION
As it's discussed in gurobi documentation, gurobi engine is written in the C language. However, all languages supported by gurobi (Python, Java, Matlab, C#, and so on) provide an interface to gurobi engine and no heavy computation is performed in the API interface.
Considering Python, my question is how gurobipy makes the API calls to the C code from python. I read about it a little bit and I don't think they use SWIG or similar tools. I'd be thankful if somebody can clarify this to me.
Thank you all
...ANSWER
Answered 2021-May-13 at 17:44You are correct that the Gurobi solver is written in C. Gurobi currently provides APIs for C++, Java, .NET, Python, MATLAB and R; each of these call the C API directly. For Python, Gurobi provides Python classes that represent optimization models. These classes pass data and solutions to the Gurobi C API using Cython.
This only describes the Gurobi APIs; open-source APIs such as Pyomo or PuLP work differently.
QUESTION
Hi There Stackoverflow,
I am trying to program a NAO robot using Python. I would like to access some of the motion features of the NAO which require the "almath" module which I believe is installed as a part of the naoqi python sdk.
The naoqi python sdk is successfully installed on my machine and I have no problem importing "naoqi" into any of my scripts. However when trying to run any motion related scripts that require "almath" I run into the error seen in the second image. I am not sure why this module cannot be found when I have installed the naoqi library. The almathswig error is not well documented online so I thought I would put up a question to see if anyone can point my in the right track.
The error I am faced with is:
...ANSWER
Answered 2021-May-04 at 06:23I have experienced the same while working with Almath. However, could you directly install the chorographe Version 2.8.6.X from https://developer.softbankrobotics.com/nao6/downloads/nao6-downloads-windows.
After installing it you can right click on the canvas and do select Create New Box then "python"
In General Description write anything like Test then OK.
Double click on the Box and remove everything, then
import almath
After connecting the nodes run it,
Are you getting the same error.
If yes then you can 2.5 version.
There is some bug in the latest version. It is not working on my laptop as well. However Version 2.5 is working.
QUESTION
Here is SWIG typemap, that converts C++ types to Python types.
...ANSWER
Answered 2021-May-01 at 20:41SWIG already has a typemap for Java which does this for you. To use it all you need to do is use %apply
to tell SWIG it is what you want to use for those parameters:
e.g.
QUESTION
I'm trying to figure out how to build a python extension module using waf but I've got stuck. Consider a simple tree such as:
foo.h
...ANSWER
Answered 2021-Apr-29 at 06:51You can fix your current build by changing the library type from shared (shlib
) to static (stlib
), i.e.
QUESTION
I'm trying to use a C++ library from Go. I also have little experience with Go.
My C++ method looks like this:
...ANSWER
Answered 2021-Apr-20 at 16:30It looks like it's a problem with function overloading. I had 2 getAttribute
functions with the same name and different parameters. When I rename the method so that it's unique, Capacity()
and Get()
work (although range
doesn't).
It looks like Swig tried to generate wrapper code to call the correct method, but couldn't deal with different return types
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