运行 Windows 10(内部版本 18362),使用 Node.js v10.16.0、npm v6.9.0 和 .Net Core v2.2.300。我通过 File->New Project 在 Visual Studio 2017 中创建了一个示例 React/Redux 应用程序,选择 ASP.NET Core Web 应用程序,然后选择 React.js 和 Redux。但是,当通过 Visual Studio 启动应用程序时,浏览器遇到 500 错误并说:
An unhandled exception occurred while processing the request.
AggregateException: One or more errors occurred. (One or more errors occurred. (The NPM script 'start' exited without indicating that the create-react-app server was listening for requests. The error output was: 'rimraf' is not recognized as an internal or external command, …Run Code Online (Sandbox Code Playgroud) 我刚刚第一次在C里玩,而且我不知道为什么malloc没有给我我预期的内存量.以下代码:
printf("Allocating %ld bytes of memory\n", 5*sizeof(int));
int *array = (int *) malloc(5*sizeof(int));
printf("%ld bytes of memory allocated\n", sizeof(array));
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结果是:
Allocating 20 bytes of memory
8 bytes of memory allocated
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我已经检查过我确实在调用malloc来给我20个字节,但是不明白为什么在调用malloc之后,指针只有8个字节.