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Using jQuery to compare two arrays of Javascript objects
...s are in different order.
NOTE: This works only for jquery versions < 3.0.0 when using JSON objects
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How do you split a list into evenly sized chunks?
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Memoization in Haskell?
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f mf 0 = 0
f mf n = max n $ mf (n `div` 2) +
mf (n `div` 3) +
mf (n `div` 4)
You can get an unmemoized f by using fix f
This will let you test that f does what you mean for small values of f by calling, for example: fix f 123 = 144
We could memoize this by def...
How to set Python's default version to 3.x on OS X?
...tain Lion and the basic default Python version is 2.7. I downloaded Python 3.3 and want to set it as default.
21 Answers
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Python division
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or from __future__ import division, which the forces / to adopt Python 3.x's behavior that always returns a float.
>>> from __future__ import division
>>> (10 - 20) / (100 - 10)
-0.1111111111111111
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Add new row to dataframe, at specific row-index, not appended?
...ll:
existingDF <- as.data.frame(matrix(seq(20),nrow=5,ncol=4))
r <- 3
newrow <- seq(4)
insertRow <- function(existingDF, newrow, r) {
existingDF[seq(r+1,nrow(existingDF)+1),] <- existingDF[seq(r,nrow(existingDF)),]
existingDF[r,] <- newrow
existingDF
}
> insertRow(existi...
Fast permutation -> number -> permutation mapping algorithms
I have n elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements.
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Python 3: UnboundLocalError: local variable referenced before assignment [duplicate]
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Jakob BowyerJakob Bowyer
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how to return index of a sorted list? [duplicate]
...e sorted items in the list. For example, if the list I want to sort is [2,3,1,4,5] , I need [2,0,1,3,4] to be returned.
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