# Cheat Sheet

This page provides a quick reference for common functions in the NeoFaker package.

## [App](`Nf.App`)

{: .col-2}

### [`author()`](`Nf.App.author/0`)

```elixir
iex> Nf.App.author()
"José Valim"
```

### [`description()`](`Nf.App.description/0`)

```elixir
iex> Nf.App.description()
"Elixir library for generating fake data in tests and development."
```

### [`license()`](`Nf.App.license/0`)

```elixir
iex> Nf.App.license()
"MIT License"
```

### [`name(opts \\ [])`](`Nf.App.name/1`)

```elixir
iex> Nf.App.name()
"Neo Faker"

iex> Nf.App.name(style: :camel_case)
"neoFaker"
```

### [`semver(opts \\ [])`](`Nf.App.semver/1`)

```elixir
iex> Nf.App.semver()
"1.2.3"

iex> Nf.App.semver(:pre_release)
"1.2.3-beta.1"
```

### [`version()`](`Nf.App.version/0`)

```elixir
iex> Nf.App.version()
"1.2"
```

## [Blood](`Nf.Blood`)

{: .col-2}

### [`group()`](`Nf.Blood.group/0`)

```elixir
iex> Nf.Blood.group()
"B+"
```

### [`type()`](`Nf.Blood.type/0`)

```elixir
iex> Nf.Blood.type()
"B"
```

## [Boolean](`Nf.Boolean`)

{: .col-1}

### [`boolean(true_ratio \\ 50)`](`Nf.Boolean.boolean/1`)

```elixir
iex> Nf.Boolean.boolean()
false

iex> Nf.Boolean.boolean(75)
true
```

## [Crypto](`Nf.Crypto`)

{: .col-2}

### [`md5(opts \\ [])`](`Nf.Crypto.md5/1`)

```elixir
iex> Nf.Crypto.md5()
"e35cb102765cfc56df21ba4c16e6a636"

iex> Nf.Crypto.md5(case: :upper)
"E35CB102765CFC56DF21BA4C16E6A636"
```

### [`sha1(opts \\ [])`](`Nf.Crypto.sha1/1`)

```elixir
iex> Nf.Crypto.sha1()
"c8719790cdfff41c37c75e0c848d2b57535255aa"
```

### [`sha256(opts \\ [])`](`Nf.Crypto.sha256/1`)

```elixir
iex> Nf.Crypto.sha256()
"d0ff021e810fb8f3442a14393604b0661b02f0dfcb347d80c9580af3ab5e7e6c"
```

## [Gravatar](`Nf.Gravatar`)

{: .col-1}

### [`display(email \\ nil, opts \\ [])`](`Nf.Gravatar.display/2`)

```elixir
iex> Nf.Gravatar.display()
"https://gravatar.com/avatar/<hashed_email>?d=identicon&s=80"

iex> Nf.Gravatar.display("john.doe@example.com", fallback: :monsterid)
"https://gravatar.com/avatar/<hashed_email>?d=monsterid&s=80"
```