is-constant

Signed-off-by: Nicholas Gates <nick@nickgates.com>

Author: gatesn

vortex-array/src/aggregate_fn/fns/is_constant/mod.rs

@@ -33,7 +33,6 @@ use crate::aggregate_fn::AggregateFnId;
 use crate::aggregate_fn::AggregateFnVTable;
 use crate::aggregate_fn::DynAccumulator;
 use crate::aggregate_fn::EmptyOptions;
-use crate::arrays::BoolArray;
 use crate::arrays::Constant;
 use crate::arrays::Null;
 use crate::builtins::ArrayBuiltins;
@@ -51,6 +50,8 @@ use crate::scalar_fn::fns::operators::Operator;
 /// Check if two arrays of the same length have equal values at every position (null-safe).
 ///
 /// Two positions are considered equal if they are both null, or both non-null with the same value.
+///
+// TODO(ngates): move this function out when we have any/all aggregate functions.
 fn arrays_value_equal(a: &ArrayRef, b: &ArrayRef, ctx: &mut ExecutionCtx) -> VortexResult<bool> {
     debug_assert_eq!(a.len(), b.len());
     if a.is_empty() {