Why learn lambda functions?

Question

Are lambda functions really any useful (except creating one-liners)?Shall I consider learning them?

Answer 1

I would recommend to learn them.
With some packages you would need to pass a function as an argument to another function call, then you would not be able to pass local arguments if required.
Then you could use:
func1(lambda x=x, y=y: func2(x, y))
If you used Tkinter that information could be useful.

Answer 2

Why not?

Answer 3

it is largely used in java streams