Last change
on this file since 30903 was 30903, checked in by davidb, 8 years ago |
Vagrant provisioning files for a 4-node Hadoop cluster. See README.txt for more details
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File size:
986 bytes
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1 | #
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2 | # zip.rb
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3 | #
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4 |
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5 | module Puppet::Parser::Functions
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6 | newfunction(:zip, :type => :rvalue, :doc => <<-EOS
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7 | Takes one element from first array and merges corresponding elements from second array. This generates a sequence of n-element arrays, where n is one more than the count of arguments.
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8 |
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9 | *Example:*
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10 |
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11 | zip(['1','2','3'],['4','5','6'])
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12 |
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13 | Would result in:
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14 |
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15 | ["1", "4"], ["2", "5"], ["3", "6"]
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16 | EOS
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17 | ) do |arguments|
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18 |
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19 | # Technically we support three arguments but only first is mandatory ...
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20 | raise(Puppet::ParseError, "zip(): Wrong number of arguments " +
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21 | "given (#{arguments.size} for 2)") if arguments.size < 2
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22 |
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23 | a = arguments[0]
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24 | b = arguments[1]
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25 |
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26 | unless a.is_a?(Array) and b.is_a?(Array)
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27 | raise(Puppet::ParseError, 'zip(): Requires array to work with')
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28 | end
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29 |
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30 | flatten = function_str2bool([arguments[2]]) if arguments[2]
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31 |
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32 | result = a.zip(b)
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33 | result = flatten ? result.flatten : result
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34 |
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35 | return result
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36 | end
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37 | end
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38 |
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39 | # vim: set ts=2 sw=2 et :
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