libraries

Get available modules

安稳与你 提交于 2019-11-27 12:55:13
问题 With PHP you have the phpinfo() which lists installed modules and then from there look up what they do. Is there a way to see what packages/modules are installed to import? 回答1: Type help() in the interpreter then To get a list of available modules, keywords, or topics, type "modules", "keywords", or "topics". Each module also comes with a one-line summary of what it does; to list the modules whose summaries contain a given word such as "spam", type "modules spam". help> modules 回答2: If you

Add external libraries to CMakeList.txt c++

限于喜欢 提交于 2019-11-27 12:22:28
I have my external library as shown in this picture that I create the symbolic links after: and the headers related to the library in other file: I'm working with ROS ubuntu and I need to add these libraries to my package to CmakeList.txt : cmake_minimum_required(VERSION 2.4.6) include($ENV{ROS_ROOT}/core/rosbuild/rosbuild.cmake) rosbuild_init() #set the default path for built executables to the "bin" directory set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin) #set the default path for built libraries to the "lib" directory set(LIBRARY_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/lib) #common

How to add libraries in C++?

馋奶兔 提交于 2019-11-27 12:16:31
问题 Yea this is a dumb question... However in both of my C++ classes we did not do this at all (except for native libraries: iostream, iomanip, etc.)... My question is can anyone provide a link that gives the general explanation of adding libraries to C++? I do realize what what #include means; it's just I have no clue on the linker/directories in a C++ IDE. So long question short; could I get a general explanation of terms used to link libraries in C++? I'm using c::b w/ MinGW. 回答1: This would

What is index.js used for in node.js projects?

拟墨画扇 提交于 2019-11-27 11:27:19
问题 Other than a nice way to require all files in a directory (node.js require all files in a folder?), what is index.js used for mainly? 回答1: When you pass a folder to Node's require(), it will check for a package.json for an endpoint. If that isn't defined, it checks for index.js, and finally index.node (a c++ extension format). So the index.js is most likely the entry point for requiring a module. See the official Docs here: http://nodejs.org/api/modules.html#modules_folders_as_modules. Also,

Garbage collection Libraries in C++ [closed]

久未见 提交于 2019-11-27 10:54:54
What free and commercial garbage collection libraries are available for C++, and what are the pros and cons of each? I am interested in hard-won lessons from actual use in the field, not marketing or promotional blurb. There is no need to elaborate on the usual trade offs associated with automatic garbage collection, but please do mention the algorithms used (reference counting, mark and sweep, incremental, etc.) and briefly summarise the consequences. Greg Hewgill I have used the Boehm collector in the past with good success. It's open source and can be used in commercial software. It's a

MatLab error: cannot open with static TLS

大城市里の小女人 提交于 2019-11-27 10:23:21
Since a couple of days, I constantly receive the same error while using MATLAB which happens at some point with dlopen . I am pretty new to MATLAB, and that is why I don't know what to do. Google doesn't seem to be helping me either. When I try to make an eigenvector, I get this: Error using eig LAPACK loading error: dlopen: cannot load any more object with static TLS I also get this while making a multiplication: Error using * BLAS loading error: dlopen: cannot load any more object with static TLS I did of course look for the solutions to this problem, but I don't understand too much and don

What are libtool's .la file for?

旧城冷巷雨未停 提交于 2019-11-27 10:02:02
What are libtool's .la files for? How are they used with a shared object? Artyom It is a textual file that includes a description of the library. It allows libtool to create platform-independent names. For example, libfoo goes to: Under Linux: /lib/libfoo.so # Symlink to shared object /lib/libfoo.so.1 # Symlink to shared object /lib/libfoo.so.1.0.1 # Shared object /lib/libfoo.a # Static library /lib/libfoo.la # 'libtool' library Under Cygwin : /lib/libfoo.dll.a # Import library /lib/libfoo.a # Static library /lib/libfoo.la # libtool library /bin/cygfoo_1.dll # DLL Under Windows MinGW: /lib

Normalize Array methods and return values

元气小坏坏 提交于 2019-11-27 09:20:35
Is there any JavaScript Array library that normalizes the Array return values and mutations? I think the JavaScript Array API is very inconsistent. Some methods mutate the array: var A = [0,1,2]; A.splice(0,1); // reduces A and returns a new array containing the deleted elements Some don’t: A.slice(0,1); // leaves A untouched and returns a new array Some return a reference to the mutated array: A = A.reverse().reverse(); // reverses and then reverses back Some just return undefined: B = A.forEach(function(){}); What I would like is to always mutate the array and always return the same array,

Java Eclipse Android Beginner Question - How to add libraries or Linked Folder. Beginner References

我的未来我决定 提交于 2019-11-27 08:36:59
问题 I'm just starting with Android developmenent using Eclipe and have already run into some basic questions. I have some beginning books such as "busy coders guide to Android..." and "Teach Yourself Android Application Dev't in 24 Hours", however, I'm not seeing some basic things covered. Can someone tell me how to set up a library and then use it in a project? I have some example code where they have a folder appearing in Ecliple called, "DataGatherLib" Right clicking and hitting properties

Add and link mysql libraries in a cmakelist.txt

亡梦爱人 提交于 2019-11-27 07:24:28
问题 I'm working in a project where I need to use MySQL LIBRARIES. I had success in the past, using a simple makefile where I wrote the specific flags. CFLAGS+=`mysql_config --cflags` LIB+=`mysql_config --libs` However... for my project is required to use a cmakelist and I'm having difficulties with that. I can add GTK libraries with this code: find_package(PkgConfig REQUIRED) pkg_check_modules(GTK REQUIRED gtk+-3.0) include_directories(${GTK_INCLUDE_DIRS}) link_directories(${GTK_LIBRARY_DIRS})