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Matthias Boehm commented on SYSTEMML-259: ----------------------------------------- just explain where this is coming from: originally our dml-bodied functions were meant to be side-effect-free, i.e., no prints and writes; without side effects, there is no point in having functions without returns. Anyway, I also think that this is a useful extension. The required changes should be fairly local to the language-level. > 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 > > 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} -- This message was sent by Atlassian JIRA (v6.3.15#6346)