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# holoscan::ParamInlinePatch

> Carry one fixed-size compute-originated field update request.

Carry one fixed-size compute-originated field update request.

The record is trivially copyable and contains no dynamic ownership. `has_expected_generation` controls whether `expected_generation` is authoritative.

```cpp showLineNumbers={false}
#include <holoscan/parameter_update.hpp>
```

---

## Member variables

| Name                      | Type              | Description                                      |
| ------------------------- | ----------------- | ------------------------------------------------ |
| `target`                  | `ParamAddress`    | Declared target field.                           |
| `value`                   | `ParamValue`      | Complete fixed scalar value.                     |
| `expected_generation`     | `ParamGeneration` | Expected latest-accepted generation, if enabled. |
| `has_expected_generation` | `bool`            | Whether the optimistic precondition is present.  |