# [−][src]Function std::intrinsics::needs_drop

    pub const extern "rust-intrinsic" fn needs_drop<T>() -> bool

🔬 This is a nightly-only experimental API. (`core_intrinsics`)

intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library

Returns `true` if the actual type given as `T` requires drop glue; returns `false` if the actual type provided for `T` implements `Copy`.

If the actual type neither requires drop glue nor implements `Copy`, then may return `true` or `false`.

The stabilized version of this intrinsic is `std::mem::needs_drop`.