Mnemonics

v0.5.0

Mnemonics v0.5.0 Mnemonics.Snap View Source

Snapshot of tables.

iex> snap = Mnemonics.Snap.new
%Mnemonics.Snap{versions: %{}, cache: %{}}
iex> snap = Mnemonics.Snap.snap snap, :examples, 1
%Mnemonics.Snap{versions: %{examples: 1}, cache: %{examples: %{}}}
iex> snap[:examples].version
1
iex> get_and_update_in snap[:examples].cache[1], fn value ->
iex>   value = value || "example 1"
iex>   {value, value}
iex> end
{"example 1", %Mnemonics.Snap{versions: %{examples: 1}, cache: %{examples: %{1 => "example 1"}}}}

Link to this section Summary

Types

t()
table_snap()

Functions

new()

Create a new snap

snap(snap, table_name, version, cache \\ %{})

Snap the table with the version

Link to this section Types

Link to this type

t() View Source 
t() :: %Mnemonics.Snap{
  cache: %{optional(atom()) => term()},
  versions: %{optional(atom()) => pos_integer()}
}

Link to this type

table_snap() View Source 
table_snap() :: %{version: pos_integer(), cache: term()}

Link to this section Functions

Link to this function

new() View Source 
new() :: t()

Create a new snap.

iex> Mnemonics.Snap.new
%Mnemonics.Snap{versions: %{}, cache: %{}}
Link to this function

snap(snap, table_name, version, cache \\ %{}) View Source 
snap(t(), atom(), pos_integer(), term()) :: t()

Snap the table with the version.

iex> snap = Mnemonics.Snap.new
iex> Mnemonics.Snap.snap snap, :examples, 1
%Mnemonics.Snap{versions: %{examples: 1}, cache: %{examples: %{}}}

iex> snap = Mnemonics.Snap.new
iex> put_in snap[:examples], %{version: 1}
%Mnemonics.Snap{versions: %{examples: 1}, cache: %{examples: %{}}}