| queryBuilder-package | Build Filtering Query from Configuration |
| attach_to_list | Combine two lists |
| default_conditions | Register new or list existing query conditions |
| default_operators | Register new or list existing query operators |
| err_msg | Generate error message |
| in_range | Check if value fits to a range |
| in_string | Check if character value matches the provided pattern |
| is_empty | Compare the string to empty value |
| lget_attr | Extract attribute of each element from a set of lists |
| listQueryConditions | Register new or list existing query conditions |
| listQueryOperators | Register new or list existing query operators |
| operator_name_prefix | Prefix used for renaming operators names |
| prefix_operators_name | Rename operators with the provided prefix |
| query-condition | Register new or list existing query conditions |
| query-operator | Register new or list existing query operators |
| query-rules | Define filtering query |
| queryBuilderConfig | Default object storing 'queryBuilder' configuration. |
| queryBuilderConfigClass | R6 class representing 'queryBuilderConfig' object. |
| queryCondition | Register new or list existing query conditions |
| queryGroup | Define filtering query |
| queryOperator | Register new or list existing query operators |
| queryRule | Define filtering query |
| queryToExpr | Parse query rules to R filtering expression |
| query_to_expr_bare | Convert query definition to expression |
| remove_by_name | Remove list elements by their names |
| rule_to_expr | Convert rule definition to expression |
| setQueryConditions | Register new or list existing query conditions |
| setQueryOperators | Register new or list existing query operators |
| substitute_q | Substitute expression stored as a variable |