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https://issues.apache.org/jira/browse/SYSTEMML-259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15975582#comment-15975582
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Deron Eriksson commented on SYSTEMML-259:
-----------------------------------------
Fixed by https://github.com/apache/incubator-systemml/pull/463. Thank you
[~mwdus...@us.ibm.com] for tracking down the issue.
> If no return type specified, DML/PyDML function calls require an lvalue
> -----------------------------------------------------------------------
>
> Key: SYSTEMML-259
> URL: https://issues.apache.org/jira/browse/SYSTEMML-259
> Project: SystemML
> Issue Type: Improvement
> Components: APIs
> Reporter: Deron Eriksson
> Assignee: Deron Eriksson
> Priority: Minor
> Fix For: SystemML 1.0
>
>
> If a function is defined in DML or PyDML with no return type, and then this
> function is called, it requires an lvalue variable to be assigned the value
> returned from the function, even though no value is returned from the
> function.
> DML Example (assigning to z is required):
> {code}hello = function() {
> print('hi')
> }
> z = hello(){code}
> PyDML Example (assigning to z is required):
> {code}def hello():
> print('hi')
> z = hello(){code}
> DML Example (error: "function call needs to have lvalue (Quickfix: change it
> to 'tmpVar = hello(...)')"):
> {code}hello = function() {
> print('hi')
> }
> hello(){code}
> PyDML Example(error: "function call needs to have lvalue (Quickfix: change it
> to 'tmpVar = hello(...)')"):
> {code}def hello():
> print('hi')
> hello(){code}
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