refactor!(core): delete the utils feature of the core crate (#254)

* remove the `utils` feature from the core crate

* update code

* fuse grid module files into a single file

* remove unused imports

benches/Cargo.toml

@@ -20,7 +20,7 @@ honeycomb.workspace = true
 rayon.workspace = true
 
 [dev-dependencies]
-honeycomb-core = { workspace = true, features = ["utils"] }
+honeycomb-core.workspace = true
 criterion = { workspace = true, features = ["html_reports"] }
 iai-callgrind.workspace = true
 rand = { workspace = true, features = ["small_rng"] }

examples/Cargo.toml

@@ -11,7 +11,7 @@ publish = false
 autoexamples = false
 
 [dev-dependencies]
-honeycomb-core = { workspace = true, features = ["utils", "io"] }
+honeycomb-core = { workspace = true, features = ["io"] }
 honeycomb-render = { workspace = true }
 honeycomb-kernels = { workspace = true }
 rand = { workspace = true, features = ["small_rng"] }
@@ -33,12 +33,6 @@ path = "examples/io/read.rs"
 name = "io_write"
 path = "examples/io/write.rs"
 
-# memory usage
-
-[[example]]
-name = "memory_usage"
-path = "examples/memory_usage/compute.rs"
-
 # parallelization
 
 [[example]]

honeycomb-core/Cargo.toml

@@ -14,7 +14,6 @@ publish = true
 
 [features]
 io = ["dep:vtkio"]
-utils = []
 
 # deps
 

honeycomb-core/src/attributes/collections.rs

@@ -204,24 +204,3 @@ impl<A: AttributeBind + AttributeUpdate> AttributeStorage<A> for AttrSparseVec<A
         self.remove_core(trans, &id)
     }
 }
-
-#[cfg(feature = "utils")]
-impl<T: AttributeBind + AttributeUpdate> AttrSparseVec<T> {
-    /// Return the amount of space allocated for the storage.
-    #[must_use = "returned value is not used, consider removing this method call"]
-    pub fn allocated_size(&self) -> usize {
-        self.data.capacity() * std::mem::size_of::<Option<T>>()
-    }
-
-    /// Return the total amount of space used by the storage.
-    #[must_use = "returned value is not used, consider removing this method call"]
-    pub fn effective_size(&self) -> usize {
-        self.data.len() * std::mem::size_of::<Option<T>>()
-    }
-
-    /// Return the amount of space used by valid entries of the storage.
-    #[must_use = "returned value is not used, consider removing this method call"]
-    pub fn used_size(&self) -> usize {
-        self.n_attributes() * size_of::<TVar<Option<T>>>()
-    }
-}