z = (x -> x, x -> x^2, x -> x^3, x -> x^4, x -> x^5, x -> x^6, x -> x^7, x -> x^8, x -> x^9, x -> x^10)
sizeof(z) # 0
z2 = ntuple(i -> (x -> x^i), 10)
sizeof(z2) # 80

julia> f1 = (i) -> x -> x^2
#101 (generic function with 1 method)

julia> f1(1)
#102 (generic function with 1 method)

julia> typeof(f1(1))
var"#102#104"

julia> sizeof(f1(1))
0

julia> f2 = (i) -> x -> x^i
#105 (generic function with 1 method)

julia> typeof(f2(1))
var"#106#108"{Int64}

julia> sizeof(f2(1))
8

julia> sizeof(f2(Int8(1)))
1

julia> @code_lowered(f2(10))
CodeInfo(
1 ─ %1 = Main.:(var"#106#108")
│   %2 = Core.typeof(i)
│   %3 = Core.apply_type(%1, %2)
│        #106 = %new(%3, i)
└──      return #106
)

gen.curr, gen.prev