objc2 0.3.0-beta.3.patch-leaks

Objective-C interface and bindings to the Cocoa Foundation framework
Documentation 
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use objc2::foundation::{NSArray, NSDictionary, NSObject};
use objc2::ns_string;
use objc2::rc::autoreleasepool;

fn main() {
    // Create and compare NSObjects
    let obj = NSObject::new();
    #[allow(clippy::eq_op)]
    {
        println!("{:?} == {:?}? {:?}", obj, obj, obj == obj);
    }

    let obj2 = NSObject::new();
    println!("{:?} == {:?}? {:?}", obj, obj2, obj == obj2);

    // Create an NSArray from a Vec
    let objs = vec![obj, obj2];
    let array = NSArray::from_vec(objs);
    for obj in array.iter() {
        println!("{:?}", obj);
    }
    println!("{}", array.len());

    // Turn the NSArray back into a Vec
    let mut objs = NSArray::into_vec(array);
    let obj = objs.pop().unwrap();

    // Create a static NSString
    let string = ns_string!("Hello, world!");
    // Use an autoreleasepool to get the `str` contents of the NSString
    autoreleasepool(|pool| {
        println!("{}", string.as_str(pool));
    });
    // Or simply use the `Display` implementation
    let _s = string.to_string(); // Using ToString
    println!("{}", string); // Or Display directly

    // Create a dictionary mapping strings to objects
    let keys = &[string];
    let vals = vec![obj];
    let dict = NSDictionary::from_keys_and_objects(keys, vals);
    println!("{:?}", dict.get(string));
    println!("{}", dict.len());
}