type RangeFiller = Box<dyn Fn(usize, usize) + Send + Sync>;Expand description
Type-erased “fill this row-range of this column” closure.
Called with (offset, len) describing a contiguous half-open row range
[offset, offset + len) of one column. The concrete closure (captured at
.column::<T>() / .column_str() registration time) knows the column’s
element type and destination buffer, and writes exactly that range — no
other thread touches it (see the safety argument on RDataFrameBuilder).
Aliased Type§
struct RangeFiller(/* private fields */);Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 16 bytes