But that’s a lot of resetting! We can save a bunch of bandwidth by instead tracking the current foreground and background color in our renderer and only emitting a new color escape sequence when our desired color changes. This is an annoying amount of bookkeeping but it substantially cuts down on the amount of escape codes emitted.
var tasks []task
，更多细节参见雷电模拟器官方版本下载
If you reserve a type for pointers to other arrays, and you always ref it
return ((union alloc_header *)data)[-1].length;
strict (default): Rejects writes when the buffer is full and too many writes are pending. Catches "fire-and-forget" patterns where producers ignore backpressure.