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https://issues.apache.org/jira/browse/SYSTEMML-2077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16374310#comment-16374310
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LI Guobao commented on SYSTEMML-2077:
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Hi [~mboehm7], I have a problem of compiling the code. I wanted to launch a
test in the class MLContextTest. And I found the errors of compilation because
of the missing classes such as PydmlParser, DmlParser etc... And I saw that
they were excluded in the file .gitignore. So how can I compile the code for
launch a test?
Regards,
Guobao
> New eval builtin function
> -------------------------
>
> Key: SYSTEMML-2077
> URL: https://issues.apache.org/jira/browse/SYSTEMML-2077
> Project: SystemML
> Issue Type: Sub-task
> Reporter: Matthias Boehm
> Priority: Major
>
> This new eval builtin function aims to provide a concise language construct
> to evaluate dynamic expressions and functions.
> Similar to R's eval function
> (https://stat.ethz.ch/R-manual/R-devel/library/base/html/eval.html), this
> would allow us to evaluate dynamically constructed expressions. There are two
> major sub tasks here: the invocation of given function pointers and the
> evaluation of dynamic expressions given as strings. Initially, we would focus
> on the former by allowing call such as {{R = eval(fname, A, B, C)}}. So far
> SystemML does not provide second-order functions which requires explicit
> {{if-else}} conditions for ensemble learning workloads. With this new
> {{eval}} function we could store a list of function names in a frame {{F}}
> and dynamically call them via {{R[i, ] = eval(F[i,1], A, B, C)}}.
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