Compilare: warning: unused imports: `fmt::Write`, `fs::write` --> main.rs:1:17 | 1 | use std::{char, fmt::Write, fs::write}; | ^^^^^^^^^^ ^^^^^^^^^ | = note: `#[warn(unused_imports)]` on by default warning: value assigned to `bf` is never read --> main.rs:96:13 | 96 | bf = get_question_result(&graph, sets, &question); | ^^ | = help: maybe it is overwritten before being read? = note: `#[warn(unused_assignments)]` on by default warning: unused variable: `i` --> main.rs:158:10 | 158 | for (i, node_index) in parent_nodes.iter().enumerate(){ | ^ help: if this is intentional, prefix it with an underscore: `_i` | = note: `#[warn(unused_variables)]` on by default warning: unused variable: `j` --> main.rs:163:14 | 163 | for (j, child_node_index) in graph.vector_node[*node_index].child_vector.iter().enumerate(){ | ^ help: if this is intentional, prefix it with an underscore: `_j` warning: unused variable: `i` --> main.rs:171:10 | 171 | for (i, set_index) in set_verctors.iter().enumerate(){ | ^ help: if this is intentional, prefix it with an underscore: `_i` warning: unused variable: `i` --> main.rs:182:10 | 182 | for (i, index) in all_sets_index.iter().enumerate(){ | ^ help: if this is intentional, prefix it with an underscore: `_i` warning: unused variable: `j` --> main.rs:204:14 | 204 | for (j, set_node) in all_sets_index.iter().enumerate(){ | ^ help: if this is intentional, prefix it with an underscore: `_j` warning: function `print_sets` is never used