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

# Struct LambdaParameter

Module: `std::meta::expr`

```rust
pub comptime struct LambdaParameter
{ /* private fields */ }
```

A parameter in a [`LambdaExpression`](/aztec-nr-api/v6.0.0/std/meta/expr/struct.LambdaExpression.md).

## Implementations

```rust
impl LambdaParameter
```

```rust
pub comptime fn pattern(self) -> Expr
```

The parameter pattern.

```rust
pub comptime fn typ(self) -> Option<UnresolvedType>
```

The optional parameter type annotation.