Implicit Arguments in Cairo

Implicit arguments are something nobody likes (or wants to use) but are currently required to be explicitly written. This will change in future versions of Cairo (https://community.starknet.io/t/truly-implicit-arguments/491/5).

Basically they are internal book keeping for the compiler / Cairo VM. They're used to track the internal memory pointers across function calls. Without them, the compiler wouldn't know how/where to continue executing code after a function returns.

You can read more details here: https://www.cairo-lang.org/docs/how_cairo_works/builtins.html#implicit-arguments

ㅤ This answer was originally posted on Triality