Method from_fields

arrow-array/src/builder/struct_builder.rs:177–184

Creates a new `StructBuilder` from [`Fields`] and `capacity`

(fields: impl Into<Fields>, capacity: usize)

    /// Creates a new `StructBuilder` from [`Fields`] and `capacity`
    pub fn from_fields(fields: impl Into<Fields>, capacity: usize) -> Self {
        let fields = fields.into();
        let mut builders = Vec::with_capacity(fields.len());
        for field in &fields {
            builders.push(make_builder(field.data_type(), capacity));
        }
        Self::new(fields, builders)
    }

    /// Returns a mutable reference to the child field builder at index `i`.
    /// Result will be `None` if the input type `T` provided doesn't match the actual