很多初学者喜欢用全局变量，因为这比函数的参数传来传去更容易让人理解。确实在很多场景下用全局变量很方便。不过如果代码规模增大，并且有多个文件的时候，全局变量就会变得比较混乱。你可能不知道在哪个文件中定义了相同类型甚至重名的全局变量，也不知道这个变量在程序的某个地方被做了怎样的操作。因此对于这种情况，有 ...

The iconic Java framework has evolved and modernized, integrating a host of new features without sacrificing power or ...

Researchers have designed an intelligent household robot capable of autonomous navigation, object detection, and sorting. This robot, equipped with advanced technologies like depth cameras, YOLOv11 ...

The Rhode Island School of Design uses recipes to teach the trial-and-error process of tweaking and refining a product. To study the method of iterative design ...

The Magnolia co-founder is teaming up with MasterClass to take viewers step-by-step through her design process so they can create their dream home Joanna Gaines is pulling back the curtain like never ...

Build both your frontend and backend in a single language, Python (pip install reflex), without JavaScript. Build both your frontend and backend in a single language, Python (pip install reflex), ...

Micro optics can replace bulky traditional optics with sleek, micro and nanostructured alternatives, enabling more advanced optical functions. These components, produced with semiconductor ...