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Elixir-native LangChain, LangGraph, and DeepAgents for traceable LLM apps: OTP workflows, tools, memory, human-in-the-loop, streaming, custom clients/adapters, minimal deps, and WeaveScope tracing.
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lib/beam_weaver/graph/resume.ex
defmodule BeamWeaver.Graph.Resume do
@moduledoc """
Explicit resume values for graph interrupts.
Plain Elixir values work for normal resumes. Use `null/0` when the intended
resume value is `nil`, because bare `nil` is indistinguishable from "no
resume value was supplied" at API boundaries.
"""
defstruct [:value, null?: false]
@type t :: %__MODULE__{value: term(), null?: boolean()}
@spec null() :: t()
def null, do: %__MODULE__{null?: true}
@spec value(term()) :: t()
def value(value), do: %__MODULE__{value: value}
end