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Difference between a Seq and a List in Scala
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418
In Java terms, Scala's Seq would be Java's List, and Scala's List would be Java's LinkedList.
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How does IPython's magic %paste work?
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138
You can't copy to IPython directly. This are the steps:
Copy the lines you want to copy into...
How do you remove the root CA certificate that fiddler installs
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Since Fiddler 4.6.1.5 the GUI is a bit different.
Go to Tools -> Fiddler Options -> HTTPS. Then click the "Actions" button and then "Reset All Certificates"
It will popup a message that it could take a while but it's really quick. Appro...
How to cancel a Task in await?
...= new CancellationTokenSource();
source.CancelAfter(TimeSpan.FromSeconds(1));
Task<int> task = Task.Run(() => slowFunc(1, 2, source.Token), source.Token);
// (A canceled task will raise an exception when awaited).
await task;
}
private int slowFunc(int a, int b, CancellationToken ...
不到20个积木块，我用App Inventor 2给女儿做了个接星星小游戏 - App应用开...
...少。
需求分析
女儿的"需求"其实很简单：
1. 星星从屏幕上方不断掉落
2. 底部有一个篮子可以左右移动
3. 接住星星加分，没接住就掉血
4. 分数越高越好玩
说白了就是一个经典的"跌落物体接住"小游戏，...
Why I can't change directories using “cd”?
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31 Answers
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Import pandas dataframe column as string not int
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154
Just want to reiterate this will work in pandas >= 0.9.1:
In [2]: read_csv('sample.csv', d...
Regular expression to match URLs in Java
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106
Try the following regex string instead. Your test was probably done in a case-sensitive manner...