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| 01:33.07 | macsforme | if I have two independent C++ classes, and I want to override an operator that acts upon both, any tips for how to do that without creating a circular dependency? |
| 01:34.18 | macsforme | in my case, I have class Vector, class Matrix, and Vector& operator *= (const Matrix&) for multiplying a Vector by a Matrix |
| 01:36.04 | macsforme | so it seems like that should go inside of the Vector class... but Matrix isn't defined yet... Matrix has a lot of dependencies on Vector so I was trying to avoid having Vector also depend on Matrix |
| 01:36.38 | blast007 | forward declaration? |
| 01:37.47 | macsforme | I tried that, but the error I was getting suggested that it wanted Matrix to be fully defined |
| 01:39.34 | macsforme | Member access into incomplete type 'const Vector::Matrix' |
| 01:40.12 | blast007 | is Vector.cxx/cpp including Matrix.h? |
| 01:40.30 | macsforme | yes |
| 01:41.09 | blast007 | but I suppose Vector.h is not |
| 01:41.12 | macsforme | oh, I think I fixed it... moved the "class Matrix;" forward declaration outside of the Vector class definition to the top level |
| 01:41.19 | blast007 | ah |
| 01:41.31 | macsforme | thanks |
| 02:24.52 | the_map | follow the white rabbit |
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| 16:54.09 | JeffM | macsforme: templates |
| 16:55.02 | JeffM | that's the generic answer to your generic C++ question :) |
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| 16:55.24 | JeffM | and yeah you can't declare a class ref inside a class :) |
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| 23:59.11 | macsforme | how would I implement that using templates? |