[BUG] Add const keyword to methods wherever appropriate #63
Description
Note: You can contact @ashok-arora if you face any problem while solving this issue.
It is impossible to work with const Matrix objects as none of the methods are declared const.
Description
Using a const Matrix object I can't even call basic methods like row_length(), col_length(), print(), etc. as none of these are declared const` even though they are not changing the object value.
Expected Behavior
row_length(), col_length() and other methods not changing the object should run when called using a const Matrix object.
Actual Behavior
row_length(), col_length() and other methods not changing the object give error when when called using a const Matrix object.
Possible Fix
Add const keyword to methods which will not change the object value.