Returns a boolean indicating whether any users exist.

Examples

iex> any_users_exist?()
true

Returns an %Ecto.Changeset{} for tracking user changes.

Examples

iex> change_user(user)
%Ecto.Changeset{data: %User{}}

Creates a user.

Examples

iex> create_user(%{field: value})
{:ok, %User{}}

iex> create_user(%{field: bad_value})
{:error, %Ecto.Changeset{}}

Deletes a user.

Examples

iex> delete_user(user)
{:ok, %User{}}

iex> delete_user(user)
{:error, %Ecto.Changeset{}}

Gets a single user.

Returns nil if the User does not exist.

Examples

iex> get_user!(123)
%User{}

iex> get_user!(456)
nil

Gets a single user.

Raises Ecto.NoResultsError if the User does not exist.

Examples

iex> get_user!(123)
%User{}

iex> get_user!(456)
** (Ecto.NoResultsError)

Returns the list of users.

Examples

iex> list_users()
[%User{}, ...]

Updates a user.

Examples

iex> update_user(user, %{field: new_value})
{:ok, %User{}}

iex> update_user(user, %{field: bad_value})
{:error, %Ecto.Changeset{}}