I have an array of arrays:
arr = [["Foo1", "Bar1", "1", "W"],
["Foo2", "Bar2", "2", "X"],
["Foo3", "Bar3", "3", "Y"],
["Foo4", "Bar4", "4", "Z"]]
And I want an array containing only the third column of each of the arrays:
res = ["1", "2", "3", "4"]
How would I do that?
I want to type something like:
arr[][2]
But thinking more Ruby-like, I tried:
arr.select{ |r| r[2] }
but this returns the whole row.