Last change
on this file since 30960 was 30960, checked in by davidb, 7 years ago |
Switch to using Puppet to provision machine. Strongly based on files developed for spark-hdfs cluster
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File size:
664 bytes
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1 | #
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2 | # flatten.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(:flatten, :type => :rvalue, :doc => <<-EOS
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7 | This function flattens any deeply nested arrays and returns a single flat array
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8 | as a result.
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9 |
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10 | *Examples:*
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11 |
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12 | flatten(['a', ['b', ['c']]])
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13 |
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14 | Would return: ['a','b','c']
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15 | EOS
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16 | ) do |arguments|
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17 |
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18 | raise(Puppet::ParseError, "flatten(): Wrong number of arguments " +
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19 | "given (#{arguments.size} for 1)") if arguments.size != 1
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20 |
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21 | array = arguments[0]
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22 |
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23 | unless array.is_a?(Array)
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24 | raise(Puppet::ParseError, 'flatten(): Requires array to work with')
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25 | end
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26 |
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27 | result = array.flatten
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28 |
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29 | return result
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30 | end
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31 | end
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32 |
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33 | # vim: set ts=2 sw=2 et :
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