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Xcode里面如果target是framework，会有bundle identifier，请问有何用？.a库都没有这个id的啊！
Personal humble opinion:framework contains code and resource files, which is equivalent to a small project.Static library.a file is a collection of pure code.
.a file is just a simple binary file, .framework is a completed project
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Personal humble opinion:
framework contains code and resource files, which is equivalent to a small project.
Static library.a file is a collection of pure code.
.a file is just a simple binary file, .framework is a completed project