> Aztec.nr API reference, v6.0.0 (mainnet and testnet). Index: https://docs.aztec.network/aztec-nr-api/v6.0.0/llms.txt

# Struct TransientValue

Module: `noir_aztec::transient`

```rust
pub struct TransientValue<T>
{ /* private fields */ }
```

A single value that lives for the duration of a single top-level PXE call.

Shared across all call frames of the same contract (private and utility alike) within one top-level PXE call. A contract can only ever access its own transient values; other contracts called within the same top-level PXE call cannot see them.

Values share the slot space with [`TransientArray`](/aztec-nr-api/v6.0.0/noir_aztec/transient/type.TransientArray.md)s: a value and an array at the same slot alias each other, so use distinct slots.

## Implementations

```rust
impl<T> TransientValue<T>
```

```rust
pub unconstrained fn at(slot: Field) -> Self
```

Returns a handle to the value at the given slot, which may already hold data stored by an earlier frame.

```rust
pub unconstrained fn store(self, value: T)
where
    T: Serialize
```

Stores a value at the given slot.

```rust
pub unconstrained fn read(self) -> Option<T>
where
    T: Deserialize
```

Returns the value previously stored at the slot with [`TransientValue::store`](/aztec-nr-api/v6.0.0/noir_aztec/transient/struct.TransientValue.md#store), or `Option::none()` if the slot holds no value.

```rust
pub unconstrained fn delete(self)
```

Deletes the stored value. Does nothing if the slot holds no value.