How to

📄️ RunnableParallel: Manipulating data

manipulating-inputs-output}

RunnablePassthrough allows to pass inputs unchanged or with the addition

You can use arbitrary functions in the pipeline.

This notebook covers how to do routing in the LangChain Expression

Sometimes we want to invoke a Runnable within a Runnable sequence with

Oftentimes you may want to experiment with, or even expose to the end

You can also turn an arbitrary function into a chain by adding a

There are many possible points of failure in an LLM application, whether

You can use generator functions (ie. functions that use the yield

Once you create a runnable with LCEL, you may often want to inspect it

The RunnableWithMessageHistory lets us add message history to certain