Primitives

In addition to various components that are usable with LCEL, LangChain also includes various primitives that help pass around and format data, bind arguments, invoke custom logic, and more.

This section goes into greater depth on where and how some of these components are useful.

📄️ Sequences: Chaining runnables

chaining-runnables}

📄️ Parallel: Format data

formatting-inputs-output}

📄️ Binding: Attach runtime args

binding-attach-runtime-args}

📄️ Lambda: Run custom functions

run-custom-functions}

📄️ Passthrough: Pass through inputs

passing-data-through}

📄️ Assign: Add values to state

adding-values-to-chain-state}

📄️ Configure runtime chain internals

configure-chain-internals-at-runtime}