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Proposal to add a common cache operation of "get" or "insert", aka getsert #6

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Proposal to add a common cache operation of "get" or "insert", aka getsert #6

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9 changes: 9 additions & 0 deletions lib/stash.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,15 @@ defmodule Stash do
:ets.insert(cache, { key, value })
end

@spec getsert(atom, any, () -> any | any) :: any
deft getsert(cache, key, function) when is_function(function, 0) do
get(cache, key) || set(cache, key, function.())
end

deft getsert(cache, key, value) do
get(cache, key) || set(cache, key, value)
end

@doc """
Increments a key directly in the cache by `count`. If the key does not exist
it is set to `initial` before **then** being incremented.
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