Update champ.SVD.R to work with R >= 4.0 #31
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Checking class(beta) will return "matrix" and "array" (if beta is a matrix) since R 4.0.0, breaking champ.SVD. https://cran.r-project.org/doc/manuals/r-release/NEWS.html "matrix objects now also inherit from class "array", so e.g., class(diag(1)) is c("matrix", "array"). This invalidates code incorrectly assuming that class(matrix_obj)) has length one." Checking with inherits work before and after 4.0.0.
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Checking class(beta) will return "matrix" and "array" (if beta is a matrix) since R 4.0.0, breaking champ.SVD.
https://cran.r-project.org/doc/manuals/r-release/NEWS.html "matrix objects now also inherit from class "array", so e.g., class(diag(1)) is c("matrix", "array"). This invalidates code incorrectly assuming that class(matrix_obj)) has length one."
Checking with inherits work before and after 4.0.0.