| 54 | */ |
| 55 | template < typename DeleteContainer, typename ValueContainer > |
| 56 | index_t delete_vector_elements( |
| 57 | const DeleteContainer& to_delete, ValueContainer& values ) |
| 58 | { |
| 59 | OpenGeodeBasicException::check_assertion( |
| 60 | to_delete.size() == values.size(), |
| 61 | "[delete_vector_elements] Number of elements in the two vectors " |
| 62 | "should match" ); |
| 63 | const auto first_true = absl::c_find( to_delete, true ); |
| 64 | if( first_true == to_delete.end() ) |
| 65 | { |
| 66 | return 0; |
| 67 | } |
| 68 | index_t nb_removed_elements{ 0 }; |
| 69 | for( const auto i : |
| 70 | Range{ first_true - to_delete.begin(), to_delete.size() } ) |
| 71 | { |
| 72 | if( to_delete[i] ) |
| 73 | { |
| 74 | nb_removed_elements++; |
| 75 | } |
| 76 | else |
| 77 | { |
| 78 | values[i - nb_removed_elements] = std::move( values[i] ); |
| 79 | } |
| 80 | } |
| 81 | values.erase( values.end() - nb_removed_elements, values.end() ); |
| 82 | return nb_removed_elements; |
| 83 | } |
| 84 | |
| 85 | /*! |
| 86 | * Create a new vector containing only some elements from a given vector. |