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What is the difference between quiet NaN and signaling NaN?
I have read about floating-point and I understand that NaN could result from operations. But I can't understand what these are concepts exactly. What is the difference between them?
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Why modelVersion of pom.xml is necessary and always set to 4.0.0?
I have noticed that Maven's <modelVersion></modelVersion> of pom.xml is always set to 4.0.0.
4 Answers
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Wildcards in a Windows hosts file
I want to setup my local development machine so that any requests for *.local are redirected to localhost . The idea is that as I develop multiple sites, I can just add vhosts to Apache called site1.local , site2.local etc, and have them all resolve to localhost , while Apache serves a differ...
How to round a number to n decimal places in Java
What I would like is a method to convert a double to a string which rounds using the half-up method - i.e. if the decimal to be rounded is 5, it always rounds up to the next number. This is the standard method of rounding most people expect in most situations.
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Create list of single item repeated N times
I want to create a series of lists, all of varying lengths. Each list will contain the same element e , repeated n times (where n = length of the list).
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How do I create a list of random numbers without duplicates?
I tried using random.randint(0, 100) , but some numbers were the same. Is there a method/module to create a list unique random numbers?
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Peak memory usage of a linux/unix process
Is there a tool that will run a command-line and report the peak RAM usage total?
20 Answers
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Converting a column within pandas dataframe from int to string
I have a dataframe in pandas with mixed int and str data columns. I want to concatenate first the columns within the dataframe. To do that I have to convert an int column to str .
I've tried to do as follows:
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Insert a row to pandas dataframe
I have a dataframe:
11 Answers
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Putting an if-elif-else statement on one line?
I have read the links below, but it doesn't address my question.
Does Python have a ternary conditional operator? (the question is about condensing if-else statement to one line)
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