Version 0.89.0

[kmcgrady]

Release date: Sep 22, 2021

Highlights

• Introducing st.experimental_memo and experimental_singleton, a new primitive for caching! See our blog post
• Streamlit allows developers to configure their hamburger menu to be more user-centric

Notable Changes

• We updated our UI to a more polished look with a new font.
• We now support theme.base in the theme object when it’s sent to custom components.
• We’ve modified session state to reset widgets if any of their arguments changed even if they provide a key.
  • Some widget behavior may have changed, but we believe this change makes the most sense. We have added a section to our documentation describing how they behave.

Other Changes

• Bug fixes: Support svgs from a URL (#3809) and that do not start with <svg> tag (#3789)

See our demo app demonstrating these new features!

[feliperoque]

Nice job. Though is there a way to insert a thumbnail through my app url so people who i had shared can know what the url it’s about?

[fredzannarbor]

is there a single place, command line, or method that can list all experimental or beta features?

[ryanlampkin]

So I posted this in the v1.0 announcement, but it appears this “widget state” change was implemented here, in v.0.89.

https://discuss.streamlit.io/t/version-1-0-0/17805/5

“Some widget behavior may have changed, but we believe this change makes the most sense.” I think more needs to be said about this (e.g. why was this change made, what are the benefits). This change seems to impact my app’s functionality a great deal and I’m not sure how to reconfigure to accommodate.

[kmcgrady]

That is on our radar as something to do! There’s huge value in sharing your work. There are few challenges we need to tackle to make it “Streamlit-y” (ie. fast and simple). All I can say for now is Stay Tuned.

[kmcgrady]

Ah! We could definitely be making it easy for experimental and beta features to be displayed.

For what it’s worth, currently, there are no beta features that I see. All of the ones that exist are deprecated for their proper place in Streamlit without a prefix.

As for experimental, we have a few:

• experimental_rerun - Rerun the script immediately.
• experimental_get_query_params and experimental_set_query_params allows you to retrieve and set the query params of the application.
• experimental_memo and experimental_singleton From the release notes today
• experimental_show - this predates me, but the doc in code says “Write arguments and argument names to your app for debugging purposes.”

Hope that helps!