Add From<Vec<T>> and From<HashMap<String, T>> for Dynamic.

This commit is contained in:
Stephen Chung
2020-04-22 14:07:34 +08:00
parent c69647d9fd
commit c40c0a0bc3
2 changed files with 40 additions and 8 deletions

View File

@@ -535,6 +535,16 @@ match item.type_name() { // 'type_name' returns the name
}
```
The following conversion traits are implemented for `Dynamic`:
* `From<i64>` (`i32` if [`only_i32`])
* `From<f64>` (if not [`no_float`])
* `From<bool>`
* `From<String>`
* `From<char>`
* `From<Vec<T>>` (into an [array])
* `From<HashMap<String, T>>` (into an [object map]).
Value conversions
-----------------
@@ -684,7 +694,7 @@ fn main()
engine.register_result_fn("divide", safe_divide);
if let Err(error) = engine.eval::<i64>("divide(40, 0)") {
println!("Error: {:?}", *error); // prints ErrorRuntime("Division by zero detected!", (1, 1)")
println!("Error: {:?}", *error); // prints ErrorRuntime("Division by zero detected!", (1, 1)")
}
}
```
@@ -1430,6 +1440,7 @@ engine.register_fn("push", |list: &mut Array, item: MyType| list.push(Box::new(i
Object maps
-----------
[`Map`]: #object-maps
[object map]: #object-maps
[object maps]: #object-maps
@@ -1630,13 +1641,13 @@ ts == 42; // false - types are not the same
Boolean operators
-----------------
| Operator | Description |
| -------- | ------------------------------- |
| `!` | Boolean _Not_ |
| `&&` | Boolean _And_ (short-circuits) |
| `\|\|` | Boolean _Or_ (short-circuits) |
| `&` | Boolean _And_ (full evaluation) |
| `\|` | Boolean _Or_ (full evaluation) |
| Operator | Description |
| -------- | ------------------------------------- |
| `!` | Boolean _Not_ |
| `&&` | Boolean _And_ (short-circuits) |
| `\|\|` | Boolean _Or_ (short-circuits) |
| `&` | Boolean _And_ (doesn't short-circuit) |
| `\|` | Boolean _Or_ (doesn't short-circuit) |
Double boolean operators `&&` and `||` _short-circuit_, meaning that the second operand will not be evaluated
if the first one already proves the condition wrong.