libraries

问题 I would like to do some experiments in computer graphics in Haskell. This will include doing some geometry calculations and ultimately writing a ray tracer. Which library should I pick for easy handling of vectors, matrices and relevant operations on them? There are few on Hackage including nice looking ones like vect and AC-Vector, but it's easy to miss a good candidate among so many different libraries. 回答1: For vectors and matrices that are used for transformations, vect probably is your

问题 I have python code that needs to do just a couple simple things to photographs: crop, resize, and overlay a watermark. I've used PIL, and the resample/resize results are TERRIBLE. I've used imagemagick, and the interface and commands were designed by packaging a cat in a box, and then repeatedly throwing it down a set of stairs at a keyboard. I'm looking for something which is not PIL or Imagemagick that I can use with python to do simple, high-quality image transformations. For that matter,

问题 In my quest to learn C++, I have come across dynamic and static libraries. I generally get the gist of them: compiled code to include into other programs. However, I would like to know a few things about them: Is writing them any different than a normal C++ program, minus the main() function? How does the compiled program get to be a library? It's obviously not an executable, so how do I turn, say 'test.cpp' into 'test.dll'? Once I get it to its format, how do I include it in another program?

问题 Like many others i have problems using boost libraries with windows. On Ubuntu 16.04 it works all very well with libboost-all-dev but on windows i have many problems. I try to build a cryptonote application which i can compile completely without any errors under linux. But i need also windows binaries so i did the steps to install the following tools: Visual Studio 2013 (vc120) CMake 3.10.1 Python 3.6.4 Boost 1.58 For boost i did the following steps: Installing boost from binary Run bootstrap

问题 I recently started using CodeLite since i though that it would be a great software, but i don't know how to add libraries to projects. Can anyone help me out ? 回答1: but i don't know how to add libraries to projects Assuming that you want to compile and link against some external libraries, these are the steps you need: Open your project settings (right click on the project->settings) -> Compiler -> Include Paths, and set here the location where the compiler can find your .h files Open project

问题 I want to be able to (pretty-)print the contents of my maps. They should have newlines and indentation rather than on a single line; ignoring the toString methods of collections/iterables/etc; and recursing into nested collections. This is especially of interest for me regarding maps. I suppose JSON'ing might be relevant, but I don't want to go that far, or at least - I don't want my code to have to know about JSON just for me to pretty-print it. What are my options (other than writing this

问题 I am trying to add a Library to an existing project inside eclipse. I am keeping the Project Folder itself and the Library Folder in a folder marked "ANDROID" on my desktop. When I try to Import > Existing Code into Workspace > Select "ANDROID".. the only project that gets added is the App itself and NOT the library. I even try to add the library on its own and it will show up on the import list but will not have a "ticked box" with the option of "Finish". I even right clicked my App -

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . is there a free recurrence library that is available that we could use ?, we are looking for something like we supply the date time and the type of recurrence (daily, Monthly, Weekly and the interval(say for every 2 weeks or months or days) and we get a list of future dates ??? Thanks Nen 回答1: I am using dday

问题 I'm trying to get the dlib library working in my c++ project and don't know what to do with my Makefile and the #include<...> in the header file of my script. I have placed my header file and my script in the src directory. A symbolic link has been made to the dlib library, the link is in the include directory (see the folder structure below). On the dlib website it says: You should not add the dlib folder itself to your compiler's include path Instead you should add the folder that contains

问题 My log file shows this error: ERROR - 2016-12-03 03:22:10 --> Severity: Warning --> fsockopen(): SSL operation failed with code 1. OpenSSL Error messages: error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol E:\xampp\htdocs\verime_v11\system\libraries\Email.php 2014 ERROR - 2016-12-03 03:22:10 --> Severity: Warning --> fsockopen(): Failed to enable crypto E:\xampp\htdocs\verime_v11\system\libraries\Email.php 2014 ERROR - 2016-12-03 03:22:10 --> Severity: Warning --> fsockopen()