Copilot commented on code in PR #120:
URL: https://github.com/apache/datasketches-rust/pull/120#discussion_r3213341135


##########
datasketches/Cargo.toml:
##########
@@ -34,6 +34,18 @@ keywords = ["sketch", "hyperloglog", "probabilistic"]
 all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
 
+[features]
+default = []
+
+# Each sketch has its own feature, so that users can opt in to only the 
sketches they need.
+bloom = []
+countmin = []
+cpc = []
+frequencies = []
+hll = []
+tdigest = []
+theta = []

Review Comment:
   `default = []` makes the crate build with *no* sketches enabled unless the 
caller opts into features, which is a breaking change for existing users and 
conflicts with issue #32’s requirement that “by default, all sketches should be 
turned on”. Consider setting `default` to include all sketch features (or 
introducing an `all` feature that’s included in `default`).



##########
CONTRIBUTING.md:
##########
@@ -27,7 +27,7 @@ Rustup will read the `rust-toolchain.toml` file and set up 
everything else autom
 
 ```shell
 cargo version
-# cargo 1.85.0 (<hash> 2024-12-31)
+# cargo 1.86.0 (<hash> <date>)

Review Comment:
   The `cargo version` example output uses placeholders (`<hash> <date>`), 
which doesn’t match the actual format users will see and can be confusing when 
validating their toolchain setup. Consider using a real example string or 
removing the parenthesized portion entirely.
   



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