zhaomengit

// makeThumbnails6 makes thumbnails for each file received from the channel.
// It returns the number of bytes occupied by the files it creates.
func makeThumbnails6(filenames <-chan string) int64 {
    sizes := make(chan int64)
    var wg sync.WaitGroup // number of working goroutines
    for f := range filenames {
        wg.Add(1)
        // worker
        go func(f string) {
            defer wg.Done()

zhaomengit

def point_in_polygon(x, y, verts):
    """
    - PNPoly算法
    - xyverts  [(x1, y1), (x2, y2), (x3, y3), ...]
    """
    try:
        x, y = float(x), float(y)
    except:
        return False
    vertx = [xyvert[0] for xyvert in verts]