contract_check_requires in core::intrinsics - Rust
Description: Check if the pre-condition `cond` has been met.

# Function contract_check_requires

Source

    pub const fn contract_check_requires<C: Fn() -> bool + Copy>(cond: C)

🔬This is a nightly-only experimental API. (`contracts_internals` #128044)
Expand description

Check if the pre-condition `cond` has been met.

By default, if `contract_checks` is enabled, this will panic with no unwind if the condition returns false.

Note that this function is a no-op during constant evaluation.