我试图在构建时将 jemalloc 库链接到我的应用程序中,使用它作为通用实现。根据https://github.com/jemalloc/jemalloc/wiki/Getting-Started,要使用的链接标志是:
\n\n-L`jemalloc-config --libdir` -Wl,-rpath,`jemalloc-config --libdir` -ljemalloc `jemalloc-config --libs`\nRun Code Online (Sandbox Code Playgroud)\n\n所以我做了以下CMakeLists.txt:
\n\ncmake_minimum_required(VERSION 2.8.12.2)\nproject(widget)\ninclude_directories(include)\nfile(GLOB SOURCES "src/*.cpp")\nadd_executable(widget ${SOURCES})\nset(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -L`jemalloc-config --libdir` -Wl,-rpath,`jemalloc-config --libdir` -ljemalloc `jemalloc-config --libs`")\nRun Code Online (Sandbox Code Playgroud)\n\n但是当我这样做时,make我收到以下错误:
Linking CXX executable widget\nc++: error: `jemalloc-config: No such file or directory\nc++: error: unrecognized command line option \xe2\x80\x98--libdir`\xe2\x80\x99\nc++: error: unrecognized command line option \xe2\x80\x98--libdir`\xe2\x80\x99\nc++: error: unrecognized command line option \xe2\x80\x98--libs`\xe2\x80\x99\nmake[2]: *** [widget] Error 1\nmake[1]: *** [CMakeFiles/widget.dir/all] Error 2\nRun Code Online (Sandbox Code Playgroud)\n boost::asio::io_service::run()boost::system::system_error如果出错,则抛出异常.我应该处理这个例外吗?如果是这样,怎么样?
我的main.cpp代码是这样的:
main()
{
boost::asio::io_service queue;
boost::asio::io_service::work work(queue);
{
// set some handlers...
**queue.run();**
}
// join some workers...
return 0;
}
Run Code Online (Sandbox Code Playgroud) 我是 nltk 的新手,想获取特定单词(例如“man”)的搭配,以便稍后我可以按频率过滤它们并按 PMI 分数对它们进行排序。
这是我检索包含“man”的二元组的试用代码,但它返回一个空列表:
>>> text = "hello, yesterday I have seen a man walking. On the other side there was another man yelling \"who are you, man?\""
>>> tokens = word_tokenize(text)
>>> finder = BigramCollocationFinder.from_words(tokens, window_size=5)
>>> filter_man = lambda w: "man" not in w
>>> finder.apply_word_filter(filter_man)
>>> finder.ngram_fd.items()
[(('have', 'seen'), 1), ((',', 'yesterday'), 1), (('on', 'the'), 1), (('I', 'have'), 1), (('of', 'another'), 1), (('walking', 'on'), 1), (('seen', 'a'), 1), (('hello', ','), 1), (('man', 'walking'), 1), (('side', …Run Code Online (Sandbox Code Playgroud)