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Multiple distinct objects: Difference between revisions
Added Rust
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<lang ruby>Array.new(n) { Foo.new }</lang>
which evaluates <code>Foo.new</code> <var>n</var> times and collects each result in an Array. This last form is also discussed [[Two-dimensional array (runtime)#Ruby|here]], on the correct construction of a two dimensional array.
=={{header|Rust}}==
<lang Rust>use std::rc::Rc;
use std::cell::RefCell;
fn main() {
let size = 3;
// Clone the given element to fill out the vector.
let mut v: Vec<String> = vec![String::new(); size];
v[0].push('a');
println!("{:?}", v);
// Run a given closure to create each element.
let mut v: Vec<String> = (0..size).map(|i| i.to_string()).collect();
v[0].push('a');
println!("{:?}", v);
// For multiple mutable views of the same thing, use something like Rc and RefCell.
let v: Vec<Rc<RefCell<String>>> = vec![Rc::new(RefCell::new(String::new())); size];
v[0].borrow_mut().push('a');
println!("{:?}", v);
}</lang>
{{out}}
<pre>["a", "", ""]
["0a", "1", "2"]
[RefCell { value: "a" }, RefCell { value: "a" }, RefCell { value: "a" }]</pre>
=={{header|Scala}}==
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