Last change
on this file since 30960 was 30960, checked in by davidb, 8 years ago |
Switch to using Puppet to provision machine. Strongly based on files developed for spark-hdfs cluster
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File size:
986 bytes
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[30960] | 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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