How to use try/catch from the MATLAB engine API

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Brandon Barker
Brandon Barker 2020-5-28
I'm trying to design a generic function from the MATLAB C Engine API that allows executing statements in a try/catch, and returning a wrapped result (wrapped differently depending on if the result is an error or success).
Related: https://www.mathworks.com/matlabcentral/answers/98043-how-can-i-capture-error-messages-when-working-with-matlab-engine-when-using-matlab-7-8-r2009a
As I understand it, engEvalString can only execute a single statement (mabye I'm wrong). If this is the case, since try/catch is inherrently multi-line in MATLAB, I'm not sure how to achieve the desired result.
Ultimately I'd like to have code that matches the following pseudo-code:
engEvalStringSafe(eng, statementString) =
tryStmt = """
try
struct('success', statementString);
catch ex
struct('failure', ex)
end"""
engEvalString(eng, tryStmt)

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