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Creating dataframe from a dictionary where entries have different lengths
Say I have a dictionary with 10 key-value pairs. Each entry holds a numpy array. However, the length of the array is not the same for all of them.
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Remove duplicated rows using dplyr
I have a data.frame like this -
6 Answers
6
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How to make child process die after parent exits?
Suppose I have a process which spawns exactly one child process. Now when the parent process exits for whatever reason (normally or abnormally, by kill, ^C, assert failure or anything else) I want the child process to die. How to do that correctly?
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How can I sort a dictionary by key?
What would be a nice way to go from {2:3, 1:89, 4:5, 3:0} to {1:89, 2:3, 3:0, 4:5} ?
I checked some posts but they all use the "sorted" operator that returns tuples.
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Zooming MKMapView to fit annotation pins?
I am using MKMapView and have added a number of annotation pins to the map about a 5-10 kilometre area. When I run the application my map starts zoomed out to show the whole world, what is the best way to zoom the map so the pins fit the view?
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How do I detect the Python version at runtime? [duplicate]
I have a Python file which might have to support Python versions < 3.x and >= 3.x. Is there a way to introspect the Python runtime to know the version which it is running (for example, 2.6 or 3.2.x )?
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Int division: Why is the result of 1/3 == 0?
I was writing this code:
16 Answers
16
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Performant Entity Serialization: BSON vs MessagePack (vs JSON)
Recently I've found MessagePack , an alternative binary serialization format to Google's Protocol Buffers and JSON which also outperforms both.
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Fastest way to iterate over all the chars in a String
In Java, what would the fastest way to iterate over all the chars in a String, this:
8 Answers
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Sort a text file by line length including spaces
I have a CSV file that looks like this
11 Answers
11
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