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Idiom #34 Create a Set of objects

Declare and initialize a Set x containing objects of type T.

using System.Collections.Generic;
HashSet<T> x = new HashSet<T>();
import std.container: redBlackTree;
auto x = redBlackTree!T;
var x = new Set<T>();
x := make(map[T]struct{})
x := make(map[T]bool)
import Data.Set
x = empty :: Set T
class T {}
let x = new Set([new T]);
import java.util.Set;
import java.util.HashSet;
Set<T> x = new HashSet<T>();
use Moops;
use Set::Object qw();
class T {}
class Set::Object::T extends Set::Object {
    method BUILDARGS(T @items) { return {data => \@items}; }
    method insert(T @items) { $self->next::method(@items); }
my $x = Set::Object::T->new(T->new, T->new, T->new);
class T(object):

x = set(T())
require 'set'
x =
use std::collections::HashSet;
let x: HashSet<T> = HashSet::new();
val x = Set[T]()

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