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I didn't find “ZipFile” class in the “System.IO.Compression” namespace
I can't use "Zipfile" class in the name space "System.IO.Compression" my code is :
10 Answers
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Why use a prime number in hashCode?
I was just wondering why is that primes are used in a class's hashCode() method? For example, when using Eclipse to generate my hashCode() method there is always the prime number 31 used:
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Get the Row(s) which have the max count in groups using groupby
How do I find all rows in a pandas dataframe which have the max value for count column, after grouping by ['Sp','Mt'] columns?
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How to fix: Handler “PageHandlerFactory-Integrated” has a bad module “ManagedPipelineHandler” in its
I am configuring an MVC 3 project to work on a local install of IIS and came across the following 500 error:
19 Answers
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Reorder levels of a factor without changing order of values
...his worked. For some strange reason ggplot now correctly changed the order in the legend, but not in the plot. Weird.
– crangos
Mar 3 '10 at 23:57
7
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Why is the order in dictionaries and sets arbitrary?
I don't understand how looping over a dictionary or set in python is done by 'arbitrary' order.
6 Answers
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Do you leave parentheses in or out in Ruby? [closed]
When possible.. do you leave parentheses in or out in Ruby?
9 Answers
9
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Difference between float and decimal data type
What difference does it make when I use float and decimal data types in MySQL?.
12 Answers
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Renaming xcode 4 project and the actual folder
I know how to rename the project in Xcode 4, but how do you rename the source folder? The thing is that renaming the project in Xcode, does only rename within Xcode (Though it is progress compared to previous) - but why Xcode is not renaming the folder in the filesystem I don't know.
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Counting the number of elements with the values of x in a vector
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Then you can subset it:
> a[names(a)==435]
435
3
Or convert it into a data.frame if you're more comfortable working with that:
> as.data.frame(table(numbers))
numbers Freq
1 4 2
2 5 1
3 23 2
4 34 2
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