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Add new row to dataframe, at specific row-index, not appended?
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159
Here's a solution that avoids the (often slow) rbind call:
existingDF <- as.data.frame(mat...
Django “login() takes exactly 1 argument (2 given)” error
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answered Jul 15 '09 at 22:32
sthsth
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Ternary Operator Similar To ?:
...ist.getClass.getSimpleName |> {x => x.endsWith("$") ? x.init | x}
res1: String = List
Is this adequate for your needs?
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Omitting the first line from any Linux command output
I have a requirement where i'd like to omit the 1st line from the output of ls -latr "some path" Since I need to remove total 136 from the below output
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Preventing Laravel adding multiple records to a pivot table
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edited Jul 4 '17 at 14:33
answered Jul 4 '13 at 18:35
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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 ...
Arduino控制RGB三色LED灯实验、程序代码、连线图、仿真 - 创客硬件开发 - ...
...控制，针对Arudino UNO板子中带有"~"的3、5、6、9、10、11数字端口写入一个模拟值，通知高电平与低电平持续时间的比值控制LED的亮度变化或者电机的转速。例如：欲使得内置的Arudino UNO 中的led亮度变为原来的一般，编写anal...
Deny all, allow only one IP through htaccess
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12 Answers
12
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Splitting on last delimiter in Python string?
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Use .rsplit() or .rpartition() instead:
s.rsplit(',', 1)
s.rpartition(',')
str.rsplit() lets you specify how many times to split, while str.rpartition() only splits once but always returns a fixed number of elements (prefix, delimiter & postfix) and is faster for the singl...
How to detect current state within directive
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115
Also you can use ui-sref-active directive:
<ul>
<li ui-sref-active="active" class...