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Bash command to sum a column of numbers [duplicate]
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edited Nov 9 '12 at 18:14
answered Jun 22 '10 at 19:47
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Appending to an empty DataFrame in Pandas?
... pd.DataFrame({"A": range(3)})
>>> df.append(data)
A
0 0
1 1
2 2
But the append doesn't happen in-place, so you'll have to store the output if you want it:
>>> df
Empty DataFrame
Columns: []
Index: []
>>> df = df.append(data)
>>> df
A
0 0
1 1
2 2
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How can I initialize a C# List in the same line I declare it. (IEnumerable string Collection Example
...};
Essentially the syntax is:
new List<Type> { Instance1, Instance2, Instance3 };
Which is translated by the compiler as
List<string> list = new List<string>();
list.Add("One");
list.Add("Two");
list.Add("Three");
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What's the best way to convert a number to a string in JavaScript? [closed]
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23 Answers
23
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Define preprocessor macro through CMake?
...tions(OPENCV_VERSION=${OpenCV_VERSION})
add_compile_definitions(WITH_OPENCV2)
Or:
add_compile_definitions(OPENCV_VERSION=${OpenCV_VERSION} WITH_OPENCV2)
The good part about this is that it circumvents the shabby trickery CMake has in place for add_definitions. CMake is such a shabby system, but...
tmux: How to join two tmux windows into one, as panes?
...ually I found the way to do that. Suppose the two windows are number 1 and 2. Use
join-pane -s 2 -t 1
This will move the 2nd window as a pane to the 1st window. The opposite command is break-pane
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HTML5 Canvas Resize (Downscale) Image High Quality?
...me details and adds noise.
Yet there's an exception to that : since the 2X image downsampling is very simple to compute (average 4 pixels to make one) and is used for retina/HiDPI pixels, this case is handled properly -the Browser does make use of 4 pixels to make one-.
BUT... if you use sever...
Pro JavaScript programmer interview questions (with answers) [closed]
... i < l; i++) {
result += arguments[i];
}
return result;
}
sum(1,2,3); // 6
And they should invoke it on your array like this (context for apply can be whatever, I usually use null in that case):
var data = [1,2,3];
sum.apply(null, data); // 6
If they've got those answers, they probab...
How might I convert a double to the nearest integer value?
...sibly in conjunction with MidpointRounding.AwayFromZero
eg:
Math.Round(1.2) ==> 1
Math.Round(1.5) ==> 2
Math.Round(2.5) ==> 2
Math.Round(2.5, MidpointRounding.AwayFromZero) ==> 3
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Accessing items in an collections.OrderedDict by index
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edited Apr 4 '15 at 3:21
answered Apr 7 '12 at 20:46
Ab...