What is the name of the feature available in nightly Rust that allows read signals to be functions instead of needing .get()?

[GabrielBarbosaGV]

Good day to all!

I am aware of the need for nightly Rust if we are to make use of this feature, but I do not know how it works. I've been searching for it with "Nightly Rust function call syntax", but didn't hit answers. Could someone point me to an explanation regarding the feature?

Many thanks for the great library and the help!

[gbj]

fn_traits and unboxed_closures

leptos/leptos_reactive/src/lib.rs

Lines 2 to 3 in 248beb4

	#![cfg_attr(feature = "nightly", feature(fn_traits))]
	#![cfg_attr(feature = "nightly", feature(unboxed_closures))]

[GabrielBarbosaGV]

Thank you very much!