我的Kafka主题包含由deviceId键入的状态.我想用来KStreamBuilder.stream().groupByKey().aggregate(...)保持状态的最新值TimeWindow.我想,只要主题按键分区,聚合函数就可以始终以这种方式返回最新值:
(key, value, older_value) -> value
这是Kafka Streams的保证吗?我应该使用自己的处理方法来检查时间戳吗?
在 matplotlib 中,我在轴上保留一个参考。如果包含轴的窗口已关闭,我想打开一个新图形。这个想法是继续在图形上添加绘图,直到它关闭,然后我打开一个新图形。请注意,新图的创建是由另一个图中的事件触发的。
如果它可以帮助您理解我正在尝试做的事情,这里是课程:
class DetailedPlot(object):
def __init__(self, figure):
self.origin_figure = figure
self.axis = None
self.print_figure = None
self.origin_figure.canvas.mpl_connect('button_press_event', self)
def __call__(self, event):
if event.xdata is None or event.ydata is None:
return
r = round(event.xdata - 0.025, 1)
l = round(event.ydata - 0.025, 1)
if self.axis is None or self.axis.belongs_to_a_closed_window():
self.print_figure = plt.figure()
self.axis = self.print_figure.add_subplot(111)
plotting_fcn(self.axis, r, l)
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我的目标是找到一个函数,例如belongs_to_a_closed_window
我爱vim,我真的很喜欢在写这些文字时把它包裹起来.来自Tim Pope的降价插件非常棒,而且当我尝试硬包装物品清单时,它就能完成工作.好的,我的意思是做正确的工作:
- here I write a long long long line that is longer than the 80 caracters of a line and therefore should be wrapped.
- This is a short line
- here I write another long long long line that is longer than the 80 caracters of a line and therefore should be wrapped.
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应该成为(申请gqap后):
- here I write a long long long line that is longer than the 80 caracters
of a line and therefore should be …Run Code Online (Sandbox Code Playgroud)