Lambda functions are small, anonymous functions that can be declared inline rather than via full function declaration. Let's take a quick look at how to write them in Godot 4.
Text version and code snippets: https://shaggydev.com/2023/02/02/godo...
Godot docs: https://docs.godotengine.org/en/lates...
Corrections:
01:09 This only applies to local variables where the lambda is declared, such as the variable and lambda inside of _ready() in this example. Changes to variables declared at a higher scope are not subject to this, such as moving the variable declaration outside of the _ready() function.