问题
While using Octave in c++ code, if the octave value list contained a double matrix, I would retrieve it as out(0).matrix_value() (out is the octave_value_list). Is there something similar for symbolic variable/expression? I do not want to retrieve it as a string value, as I cannot use the string for further calculations.
来源：https://stackoverflow.com/questions/32068222/octave-symbolic-expression