wdl-engine 0.13.2

Execution engine for Workflow Description Language (WDL) documents.
Documentation 
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version 1.3

workflow non_empty_optional {
  output {
    # array that must contain at least one Float
    Array[Float]+ nonempty1 = [0.0]
    # array that must contain at least one Int? (which may have an undefined value)
    Array[Int?]+ nonempty2 = [None, 1]
    # array that can be undefined or must contain at least one Int
    Array[Int]+? nonempty3 = None
    Array[Int]+? nonempty4 = [0]
  }
}