LangChain Expression Language

Nuno Campos and Harrison Chase talk through our new syntax, LangChain Expression Language (LCEL). The goal is to make it easier to construct complex chains and this webinar walks through how we built it and how to use it.

[@eugenmalatov5470]

How is it possible, such an important and helpful video gets so few views?

[@pavellegkodymov4295]

Great and very clear LCEL tutorial, thank you very much!

[@Edwinning247]

Hey, just want to say this webinar was awesome because it is really hard to understand where things are going and at what point they currently are at from just looking at the documentation updates. Would love to see more team webinars like this in the future especially when new functionality is coming out to understand the why behind it and not just the how/what. 🎉

[@girijeshthodupunuri1300]

Incredible Video, Been struggling with LCEL but this video solved all my confusions. We need one like this for Agents, especially Agent State graph.

[@boukm3n]

🗿 *it would be nice if you guys include some info in the description*

[@albertgao7256]

Wow, the chime-in of Harrison was so welcome... Because I was haveing the exact same confusion!!! Thanks!

[@zd676]

Nice! This is similar to the good old R syntax with %>%. Very useful!

[@1337kostas]

no

[@Canna_Science_and_Technology]

Just got done creating a few apps with Expression. LOVE it! so much better. Awesome Job guys...

[@kevon217]

Great enhancement!

[@SiD-hq2fo]

where was this live streamed (on which platform)

[@pypypy4228]

22:34 Please somebody explain. How is this possible to provide a context as a list of a documents but not as a string? I didn't think a chat model might understand a list data structure inside a final formatted prompt.

[@B0tch0]

I can see a lot of parallels with the rabbit os

[@pypypy4228]

and is Harrison in the vid the Harrison :)?

[@AI-in-Action952]

link to the code please