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1///2目录是否存在的检查:2boolCheckFolderExist(conststring&strPath)3{4WIN32_FIND_DATA wfd;5boolrValue =false;6HANDLE hFind = FindFirstFile(strPath.c_str(), &wfd);7if((hFind != INVALID_HANDLE_VALUE) && (wfd.dwFileAttributes &FILE_ATTRIBUTE_DIRECTORY))8{9rValue =true;10}11FindClose(h...
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1#include <iostream>2#include <fstream>34usingnamespacestd;56#defineFILENAME "*.dat"//指定文件名78intmain(void)9{10fstream _file;11_file.open(FILENAME, ios::in);12if(!_file)13{14cout<<FILENAME<<"没有被创建!"<<endl;15}16else17{18cout<<FILENAME<<"已经存在!"<<endl;19}2021cin....
full_path=system_complete( path(strPath, native ) );//判断各级子目录是否存在,不存在则需要创建if( !exists( full_path ) ) {boolbRet =create_directories(full_path);if(false==bRet) {return-1; } } strFilePath=full_path.native_directory_string();return0; ...
(TARGET_FILE_PATH "${BUILD_DIR}/${CONFIG_FILE}") # 添加自定义命令来复制配置文件 add_custom_command(TARGET ${TARGET_NAME} POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CONFIG_FILE_PATH} ${TARGET_FILE_PATH} COMMENT "Copying ${CONFIG_FILE} to build directory" ) end...
CDaoTableDef::CanUpdate Returns nonzero if the table can be updated (you can modify the definition of fields or the table properties). CDaoTableDef::Close Closes an open tabledef. CDaoTableDef::Create Creates a table which can be added to the database using Append. CDaoTableDef::Create...
Starting in Visual Studio 2022 version 17.1 Preview 2, if your top-level CMakeLists.txt exists in a subfolder and not at the root of the workspace, you'll be prompted whether you'd like to enable CMake integration or not. For more information, see CMake partial activation. Once CMake...
if(EXISTS "${NUTTX_DIR}/.config") message( FATAL_ERROR "Please distclean previous make build with `make distclean`") endif() if(NOT DEFINED BOARD_CONFIG) message(FATAL_ERROR "Please define configuration with BOARD_CONFIG")
not exists(RefPutFunctionCall rpfc | rpfc.getEnclosingBlock() = rs.getEnclosingBlock()) ) } } 大概的逻辑如下 首先使用this.getAChild*() = rs约束this为一个包含return语句的if结构 然后在加上一个exists语句确保 和rs同一个块的语句里面没有reutrn语句。