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# 7. The `VError` class

The `VError` class is the class thrown by the VIPS C++ API when an error is detected.

An `VError` object holds just one piece of information: a diagnostic string in English. There should be some sort of error code or class indicator, and diagnostic strings should be language independent. Next version!

Subsections

- 7.1 Constructors
- 7.2 Projection functions
- 7.3 Computing with `VError`
- 7.4 Convenience function