feat: add performance chart

README.md

@@ -100,12 +100,12 @@ cargo +nightly miri test --target i686-unknown-linux-gnu
 
 ## 📦 Similar crates
 
-`#[non-exhaustive]`
+`#[non_exhaustive]`
 
 | Name | Thread-safe cheap-clone | Local cheap-clone | Inline | Cheap slice  | Bytes | Cow<'a>  | Comment |
 | ---- | ----------- | ----- | ------ | ------ | ----- | ---- | :------ |
 | `hipstr` | 🟢 | 🟢 | 🟢 | 🟢 | 🟢 | 🟢 | obviously!
-| [`arcstr`](https://github.com/thomcc/arcstr) | 🟢* | ❌ | ❌ | ❌** | ❌ | ❌ | *use a custom `Arc`, **heavy slice (with dedicated substring type) |
+| [`arcstr`](https://github.com/thomcc/arcstr) | 🟢* | ❌ | ❌ | ❌** | ❌ | ❌ | *use a custom thin `Arc`, **heavy slice (with dedicated substring type) |
 | [`flexstr`](https://github.com/nu11ptr/flexstr) | 🟢* | 🟢 | 🟢 | ❌ |  ❌ | ❌ | *use an `Arc<str>` instead of an `Arc<String>` (remove one level of  indirection but use fat pointers) |
 | [`imstr`](https://github.com/xfbs/imstr) | 🟢 | 🟢 | ❌ | 🟢 | ❌ | ❌ | |
 | [`faststr`](https://github.com/volo-rs/faststr) | 🟢 | ❌ | 🟢 | 🟢 | ❌ | ❌ | zero-doc with complex API |
@@ -118,12 +118,20 @@ cargo +nightly miri test --target i686-unknown-linux-gnu
 | [`smallstr`](https://github.com/murarth/smallstr) | ❌ | ❌ | 🟢   | ❌ | ❌ | ❌ | |
 | [`smol_str`](https://github.com/rust-analyzer/smol_str) | ❌ | ❌ | 🟢* | ❌ | ❌ | ❌ | *but only inline string, here for reference |
 
-skipping specialized string types like [`tinystr`](https://github.com/unicode-org/icu4x) (ASCII-only, bounded), or bstr, or bytestring, or
+skipping specialized string types like [`tinystr`](https://github.com/unicode-org/icu4x) (ASCII-only, bounded), or bstr, or bytestring, or...
 
-In short, `HipStr`, one string type to rule them all…
+In short, `HipStr`, one string type to rule them all 😉
 
 [![How standards proliferate](https://imgs.xkcd.com/comics/standards.png)](https://xkcd.com/927/)
 
+## 🏎️ Performances
+
+While speed is not the main motivator for `hipstr`, it seems to be doing OK on that front.
+
+On my i7-8550U, under Arch Linux over Windows 11/WSL 2 (yeah I know 😅), the creation of a `HipStr` from a slice is competitive with other crates and the `std`:
+
+![string-comparison/chart.svg](string-comparison/chart.svg)
+
 ## 📖 Author and licenses
 
 For now, just me PoLazarus 👻 \

string-comparison/chart.gnu

@@ -0,0 +1,19 @@
+set style data lines
+set datafile separator comma
+set datafile columnheaders
+
+set key autotitle columnheader
+set title "string construction from string slice (non-borrowing)"
+set ylabel "time (nanoseconds)"
+set xlabel "string length (bytes)"
+set key outside right top vertical box
+set logscale x 2
+
+set output "chart.png"
+set terminal pngcairo size 1200,800 noenhanced font "Liberation Sans,14" linewidth 1.5
+
+plot for [i=2:*] 'data.csv' using 1:i with linespoints
+
+set output "chart.svg"
+set terminal svg size 1200,800 noenhanced font "Arial,Helvetica,14" linewidth 1.5 background rgb "white"
+replot