common-workflow-language / common-workflow-language/user_guide
pulling out a specific member of an array
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描述
``` cwl
cwlVersion: v1.0
class: Workflow
inputs: []
steps:
generates_an_array:
run: array_of_files.cwl
in: {}
out: [ an_array_of_files ]
single_file_processor:
run: only_one_file_input_tool.cwl
in:
raw_file: # this is type: File
source: generates_an_array/an_array_of_files
valueFrom: $(self[0])
out: [ result ]
outputs:
result:
type: File
outputSource: single_file_processor/result
```
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