Question

pathPrefix("ball") {
pathEnd {
  complete("/ball")
} ~
  path(IntNumber) { int =>
    complete(if (int % 2 == 0) "even ball" else "odd ball")
  }
}

这里有什么'〜'符号

Answer 1

我假设您在Spray / Akka-HTTP上引用了--------------------------------------------------------------------------- AttributeError Traceback (most recent call last) <ipython-input-81-277aa1d02ff0> in <module>() 2 3 # Get the covariances ----> 4 np.cov(label0, rowvar=False) C:\Users\Matheus\Anaconda3\lib\site-packages\numpy\lib\function_base.py in cov(m, y, rowvar, bias, ddof, fweights, aweights) 3062 w *= aweights 3063 -> 3064 avg, w_sum = average(X, axis=1, weights=w, returned=True) 3065 w_sum = w_sum[0] 3066 C:\Users\Matheus\Anaconda3\lib\site-packages\numpy\lib\function_base.py in average(a, axis, weights, returned) 1143 1144 if returned: -> 1145 if scl.shape != avg.shape: 1146 scl = np.broadcast_to(scl, avg.shape).copy() 1147 return avg, scl AttributeError: 'float' object has no attribute 'shape'方法。它的作用是将两条路线连在一起：

在Spray中，/** * Returns a Route that chains two Routes. If the first Route rejects the request the second route is given a * chance to act upon the request. */ def ~(other: Route): Route = { ctx ⇒ route { ctx.withRejectionHandling { rejections ⇒ other(ctx.withRejectionsMapped(rejections ++ _)) } }是接受Route并返回RequestContext的函数的类型别名：

Unit

在Akka-HTTP中，它返回type Route = RequestContext ⇒ Unit：

Future[RouteResult]

当我们在scala REST服务中定义pathPrefix时，什么是'〜'符号注释？

1 个答案: