Are function calls and for loops too costly performance wise?

[gentlemanhal]

Similar thread that has some more details

Why is there such a massive overhead in calling a function?

Godot Version v4.3.stable.official Question extends Node2D func _ready() -> void: var s := Time.get_ticks_msec() var arr: PackedInt32Array for i in range(100_000): arr.append(f(i)) var e := Time.get_ticks_msec() print(e-s) func f(i: int) -> int: var res := i * i return res takes ~60-65ms replace arr.append(f(i)) with arr.append(i * i) takes ~5-6ms that is an extreme difference. how come there is such an overhead in calling a function? i dont see this is the other languages i use…