# Functions and Generics

These examples cover higher-level function features that are already usable in the H-Series subset.

## Function overloading

Source file: `guppy_examples/guppy-features/supported/function-overloading.py`

```{literalinclude} ../../../guppy_examples/guppy-features/supported/function-overloading.py
:language: python
```

## First-class functions

Source file: `guppy_examples/guppy-features/supported/first-class-functions.py`

```{literalinclude} ../../../guppy_examples/guppy-features/supported/first-class-functions.py
:language: python
```

## Higher-order functions

Source file: `guppy_examples/guppy-features/supported/higher-order-functions.py`

```{literalinclude} ../../../guppy_examples/guppy-features/supported/higher-order-functions.py
:language: python
```

## Function type annotations

Source file: `guppy_examples/guppy-features/supported/function-type.py`

```{literalinclude} ../../../guppy_examples/guppy-features/supported/function-type.py
:language: python
```

## Generics

Source file: `guppy_examples/guppy-features/supported/generics.py`

```{literalinclude} ../../../guppy_examples/guppy-features/supported/generics.py
:language: python
```

This example manipulates its generic arrays under `@guppy.comptime`. Fixed-size
generic arrays may also be used in ordinary `@guppy` functions and follow the
usual [array rules](arrays.md).

## Protocols

Source file: `guppy_examples/guppy-features/supported/protocol.py`

```{literalinclude} ../../../guppy_examples/guppy-features/supported/protocol.py
:language: python
```