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https://issues.apache.org/jira/browse/AIRFLOW-3985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16784974#comment-16784974
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ASF GitHub Bot commented on AIRFLOW-3985:
-----------------------------------------
potiuk commented on pull request #4810: [AIRFLOW-3985] Added unary + operator
for easier linear DAG building
URL: https://github.com/apache/airflow/pull/4810
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> Adding linear DAG relationships with unary operator
> ---------------------------------------------------
>
> Key: AIRFLOW-3985
> URL: https://issues.apache.org/jira/browse/AIRFLOW-3985
> Project: Apache Airflow
> Issue Type: New Feature
> Reporter: Jarek Potiuk
> Priority: Major
>
> It would be nice for development and testing to be able to build linear DAG
> dependencies with unary + operator rather than with << with automated
> upstream dependency to the previously added task.
> Often during development we need to inject/remove tasks between two other
> tasks and with unary operator it might be very easy to comment out whole
> lines of code.
> Example:
> {code:java}
> +op1
> +op2
> +op3{code}
> might be equivalent to:
> {code:java}
> op1 >> op2 >> op3{code}
> This way we can comment out one line:
> {code:java}
> +op1
> # +op2
> +op3{code}
> equivalent to:
> {code:java}
> op1 >> op3{code}
>
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