Prim.rts_heap_size() and Prim.rts_memory_size()

[claudio]

This post describes the rts functions:

Motoko, Array, Memory

First of all, let me point out that constructing an array by repeated concatenation is not something you should do in production code. Since both operands need to be copied for each append, the cost of doing this is quadratic in the size of the final array. Assuming you want an immutable array, a more appropriate way is to create the complete array as mutable, initialise it via mutation, and then freeze it. As for the rts values: memory_size is the current size of the Wasm memory array (mostly…