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# Enclose
A convenient macro for cloning values into a closure.
[](https://travis-ci.org/clucompany/Enclose)
[](./LICENSE)
[](https://crates.io/crates/enclose)
[](https://docs.rs/enclose)
# Use
```rust
use enclose::enclose;
fn main() {
let clone_data = 0;
let add_data = 100;
my_enclose( enclose!((mut clone_data, add_data) || {
println!("#0 {:?}", clone_data);
clone_data += add_data;
println!("#1 {:?}", clone_data);
assert_eq!(clone_data, 100);
}));
assert_eq!(clone_data, 0);
}
fn my_enclose<F: FnOnce() -> R, R>(a: F) -> R {
a()
}
```
# Use 1
```rust
use std::sync::Arc;
use std::sync::Mutex;
use std::thread;
use enclose::enclose;
fn main() {
let mutex_data = Arc::new(Mutex::new( 0 ));
let thread = thread::spawn( enclose!((mutex_data => d) move || {
let mut lock = match d.lock() {
Ok(a) => a,
Err(e) => e.into_inner(),
};
*lock += 1;
}));
thread.join().unwrap();
{
let lock = match mutex_data.lock() {
Ok(a) => a,
Err(e) => e.into_inner(),
};
assert_eq!(*lock, 1);
}
}
```
# Use 2
```rust
use std::sync::Arc;
use std::sync::Mutex;
use std::sync::RwLock;
use std::thread;
use enclose::enclose;
fn main() {
let data1 = Arc::new(Mutex::new( 0 ));
let data2 = Arc::new(RwLock::new( (0, 2, 3, 4) ));
let count_thread = 5;
let mut waits = Vec::with_capacity(count_thread);
for _a in 0..count_thread {
waits.push({
thread::spawn( enclose!((data1, data2) move || {
//(data1, data2) ->
//let data1 = 'root.data1.clone();
//let data2 = 'root.data2.clone();
let mut v_lock = match data1.lock() {
Ok(a) => a,
Err(e) => e.into_inner(),
};
*v_lock += 1;
drop( data2 ); //ignore warning
}))
});
}
for a in waits {
a.join().unwrap();
}
{
//Check data1_lock
let data1_lock = match data1.lock() {
Ok(a) => a,
Err(e) => e.into_inner(),
};
assert_eq!(*data1_lock, 5);
}
{
//Check data2_lock
let data2_lock = match data2.write() {
Ok(a) => a,
Err(e) => e.into_inner(),
};
assert_eq!(*data2_lock, (0, 2, 3, 4));
}
}
```
# Use 3
```rust
use enclose::enclose;
use std::sync::Arc;
fn main() {
let clone_data = Arc::new(0);
let add_data = Arc::new(100);
my_enclose( enclose!((mut *clone_data, *add_data) || {
println!("#0 {:?}", clone_data);
clone_data += add_data;
println!("#1 {:?}", clone_data);
assert_eq!(clone_data, 100);
}));
assert_eq!(*clone_data, 0);
}
fn my_enclose<F: FnOnce() -> R, R>(a: F) -> R {
a()
}
```
# License
Copyright 2019 #UlinProject (Denis Kotlyarov) Денис Котляров
Licensed under the MIT License
|
