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Improve writeup.

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Stephen Chung
2020-07-26 10:07:40 +08:00
parent 353df6bea1
commit 5e48478496
19 changed files with 156 additions and 89 deletions
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4
doc/src/start/builds/performance.md
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@@ -37,8 +37,8 @@ Use `ImmutableString`
Internally, Rhai uses _immutable_ [strings] instead of the Rust `String` type. This is mainly to avoid excessive
cloning when passing function arguments.
The encapsulated immutable string type is `ImmutableString`. It is cheap to clone (just an `Rc` or `Arc` reference
count increment depending on the [`sync`] feature).
Rhai's internal string type is `ImmutableString` (basically `Rc<String>` or `Arc<String>` depending on the [`sync`] feature).
It is cheap to clone, but expensive to modify (a new copy of the string must be made in order to change it).
Therefore, functions taking `String` parameters should use `ImmutableString` or `&str` (which maps to `ImmutableString`)
for the best performance with Rhai.