wrapper

Recent FFTW wrapper in Java

点点圈 提交于 2019-12-03 17:21:06
问题 I'm seeking a minimal Java wrapper for a recent version of FFTW. The wrappers listed on the FFTW website are either out of date (jfftw-1.2.zip) or contain too much extra stuff (Shared Scientific Toolbox). A Google search suggests JFFTW3, which looks promising, but the download link is broken (does anybody have a mirror?) For those who want a pure Java FFT library, JTransforms looks very good. I'd prefer to use FFTW because it's about twice as fast, and it handles arbitrary dimensions d > 3.

Difference between container and wrapper

醉酒当歌 提交于 2019-12-03 12:23:24
问题 In a programming language (e.g. Java), what's the difference between container and wrapper (or is there a difference). I've heard both the terms used vaguely. 回答1: In programming languages the word container is generally used for structures that can contain more than one element, for example a Map , a Set or a List . These structures normally provide methods like contains , that are semantically suitable if the object can contain more than one item. A wrapper instead is something that wraps

Customize location of .so file generated by Cython

倾然丶 夕夏残阳落幕 提交于 2019-12-03 11:56:27
问题 I have a Cython package with wrappers of a C library. This is the tree structure of the package package/ _api.pxd _wrap.pyx setup.py wrapper/ __init__.py wrap.py Doing python setup.py build_ext --inplace puts the _wrap.so file in the top-level package/ directory which is normally required in most cases. However, my wrap.py needs the _wrap.so in the package/wrapper/ directory. I was wondering if there's a way in which setup.py could create the .so file in the desired place by itself without

Fragments - Do you have to use an Activity Wrapper around a fragment which comprises the whole Activity?

不问归期 提交于 2019-12-03 09:27:50
问题 Consider the sample app from developers.android.com This describes using Fragments like so: On a Phone you can use Fragment 1 on Activity A and fragment 2 on Activity B. On a tablet you have more real estate so you use Fragment 1 and Fragment 2 on Activity A. Great! ... But... On the first example (the one with a phone) you create an Activity with an xml file containing a single <fragment> and that's all, in the activity you only call setContentView() on that xml? That seems like a lot of

wrapper printf function that filters according to user preferences

百般思念 提交于 2019-12-03 08:44:36
问题 My program writes to a log and to stdout. Every message, however, has a certain priority and the user specifies in Preferences which priorities go to which stream (log or stdout). unsigned short PRIO_HIGH = 0x0001; unsigned short PRIO_NORMAL = 0x0002; unsigned short PRIO_LOW = 0x0004; The preferences is handled by some flags: unsigned short PRIO_LOG = (PRIO_HIGH | PRIO_NORMAL); unsigned short PRIO_STD = (PRIO_HIGH); The write_log function should work with the same parameters as the printf

Can you wrap the RolePrincipal in a custom IPrincipal object?

好久不见. 提交于 2019-12-03 08:37:30
I am using custom Membership and Role providers inside the ASP.NET framework with Forms Authentication. These are working great. The Role provider is using a cookie to persist the roles, saving a trip to the database on each web request. I am also using the UserData string inside the FormsAuthenticationTicket to store the UserId. I need to refactor my DAL out of the web project to its own project. The DAL has a dependency on retrieving the Current user’s ID as well as checking the roles for rights. How should my Authentication system change so I can use the Thread.CurrentPrincipal without

Using a php://memory wrapper causes errors

时光怂恿深爱的人放手 提交于 2019-12-03 08:25:32
I'm trying to extend the PHP mailer class from Worx by adding a method which allows me to add attachments using string data rather than path to the file. I came up with something like this: public function addAttachmentString($string, $name='', $encoding = 'base64', $type = 'application/octet-stream') { $path = 'php://memory/' . md5(microtime()); $file = fopen($path, 'w'); fwrite($file, $string); fclose($file); $this->AddAttachment($path, $name, $encoding, $type); } However, all I get is a PHP warning: PHP Warning: fopen() [<a href='function.fopen'>function.fopen</a>]: Invalid php:// URL

Automatically generate C# wrapper class from dll in Visual Studio 2010 Express?

佐手、 提交于 2019-12-03 07:38:11
问题 I was told by a colleague of mine that Visual Studio allows one to point to a .dll and auto-magically generate a C# wrapper class. Is this really possible? And if so, how does one go about achieving this? I've browsed the web, but have failed to come up with anything! Thanks all! Figured I'd share these resources as well, How to: Create COM Wrappers And courtesy of @Darin, Consuming Unmanaged DLL Functions 回答1: 3 cases: The DLL represents a managed assembly => you directly reference it in

Recent FFTW wrapper in Java

风流意气都作罢 提交于 2019-12-03 05:46:57
I'm seeking a minimal Java wrapper for a recent version of FFTW . The wrappers listed on the FFTW website are either out of date ( jfftw-1.2.zip ) or contain too much extra stuff ( Shared Scientific Toolbox ). A Google search suggests JFFTW3 , which looks promising, but the download link is broken (does anybody have a mirror?) For those who want a pure Java FFT library, JTransforms looks very good. I'd prefer to use FFTW because it's about twice as fast, and it handles arbitrary dimensions d > 3. I ended up using JNAerator to automatically generate JNA bindings from the header file fftw3.h .

不用 SWIG,Go 使用 C++ 代码的方式

跟風遠走 提交于 2019-12-03 05:31:44
将C++代码用C作一次封装,就可以让Go调用了。 这是一个C++头文件: #ifndef CGO_CPPGO_CLASS_H_ #define CGO_CPPGO_CLASS_H_ #include <stdint.h> class X { public: X(int32_t a); ~X(); void Plus(); int32_t Func(int32_t b); private: int32_t m_; }; #endif 这是对应的源文件: #include <iostream> using std::cout; using std::endl; #include "class.h" X::X(int32_t a) :m_{ a } { cout << "X::X" << endl; } X::~X() { cout << "X::~X" << endl; } void X::Plus() { m_ += 1; } int32_t X::Func(int32_t b) { return m_ + b; } 为了让Go感知不到C++(class、std::cout等)的存在,定义一个结构体: typedef struct _X_t { int unused; }X_t; 这个结构体来充当class X的作用。 完整的C头文件如下:(这个头文件中没有任何C++特有的东西!)