Method from_elem

crates/core/src/alloc/vec.rs:102–116

(elem: T, len: NonZeroUsize)

    #[doc(hidden)]
    #[inline]
    pub fn from_elem(elem: T, len: NonZeroUsize) -> Result<Self, OutOfMemory>
    where
        T: TryClone,
    {
        let mut v = Self::with_capacity(len.get())?;

        // Minimize calls to `TryClone` by always pushing `elem` itself as the
        // last element.
        for _ in 0..len.get() - 1 {
            v.push(elem.try_clone()?)?;
        }
        v.push(elem)?;

        Ok(v)
    }

    /// Same as [`std::vec::Vec::reserve`] but returns an error on allocation
    /// failure.