Method reserve

arrow-buffer/src/builder/mod.rs:179–181

(&mut self, n: usize)

    /// ```
    #[inline]
    pub fn reserve(&mut self, n: usize) {
        self.buffer.reserve(n * std::mem::size_of::<T>());
    }

    /// Appends a value of type `T` into the builder,
    /// growing the internal buffer as needed.