看着如今案头的繁忙，很难想象，在20世纪70年代，这门手艺曾因黄河水患和时代变迁几近凋零。明清鼎盛时期，朱仙镇作坊曾多达300多家，后来最难的时候，村里只剩下寥寥几家在苦撑。
void *ref(void *x) {
，详情可参考51吃瓜
The Writer is not a concrete class. Any object that implements write(), end(), and abort() can be a writer making it easy to adapt existing APIs or create specialized implementations without subclassing. There's no complex UnderlyingSink protocol with start(), write(), close(), and abort() callbacks that must coordinate through a controller whose lifecycle and state are independent of the WritableStream it is bound to.
We're excited about what HH-Routing brings to OsmAnd!