an example of Hash[ *ary1.zip(ary2).flatten ]
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require 'pp' | |
# say you've loaded a csv file with a header row, but you don't have | |
# access to any nice csv library. All you've got is an array of rows, | |
# which are also arrays: | |
# | |
# [ | |
# [ a, b, c, d ], | |
# [ 1, 2, 3, 4 ], | |
# [ 5, 6, 7, 8 ], | |
# ... | |
# ] | |
# | |
# the first row is a header row, the rest are data. Then, you do this: | |
data = [ | |
[ :a, :b, :c, :d ], | |
[ 1, 2, 3, 4 ], | |
[ 5, 6, 7, 8 ], | |
[ 0, 0, 0, 9 ], | |
] | |
headers = data.shift | |
pp data.map {|row| Hash[ *headers.zip(row).flatten ] } | |
# ta da! |
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