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Why can't my program compile under Windows 7 in French? [closed]
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How do you calculate log base 2 in Java for integers?
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Is there a method that calculates a factorial in Java?
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answered May 21 '09 at 1:45
Karl the PaganKarl the Pagan
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How do you delete a column by name in data.table?
...of the following will remove column foo from the data.table df3:
# Method 1 (and preferred as it takes 0.00s even on a 20GB data.table)
df3[,foo:=NULL]
df3[, c("foo","bar"):=NULL] # remove two columns
myVar = "foo"
df3[, (myVar):=NULL] # lookup myVar contents
# Method 2a -- A safe idiom for e...
Eclipse error: “The import XXX cannot be resolved”
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NumPy: function for simultaneous max() and min()
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