RS.CLIPPY.BOOL_TO_INT_WITH_IF

Using if to convert bool to int

This checker is a Clippy lint created by The Rust Project Contributors. The documentation shown here is a copy of the original documentation for: bool_to_int_with_if. Copyright ©2025 The Rust Team. All rights reserved.

What it does

Instead of using an if statement to convert a bool to an int, this lint suggests using a from() function or an as coercion.

Why is this bad?

Coercion or from() is another way to convert bool to a number. Both methods are guaranteed to return 1 for true, and 0 for false.

See https://doc.rust-lang.org/std/primitive.bool.html#impl-From%3Cbool%3E

Example

if condition {
    1_i64
} else {
    0
};

Use instead:

i64::from(condition);

condition as i64;