JavaScript

var hash = {key1: 'value1', key2: 'value2'};

TypeScript

var hash: {[key: string]: string} = { "key1": "value1", "key2": "value2" };

Python

hash = {"key1": "value1", "key2": "value2"}

Ruby

hash = {:key1 => "value1", :key2 => "value2"}
# Ruby 1.9以降
hash = {key1: "value1", key2: "value2"}

Perl

my %hash = ("key1" => "value1", "key2" => "value2");

PHP

$hash = array('key1'=>'value1', 'key2'=>'value2');
// PHP5.4以降
$hash = ['key1'=>'value1', 'key2'=>'value2'];

Go

hash := map[string]string {
    "key1": "value1",
    "key2": "value2",
}

Swift

var hash: Dictionary = ["key1": "value1", "key2": "value2"]

Java

Map<String, String> hash = new HashMap<String, String>() {
    {
        put("key1", "value1");
        put("key2", "value2");
    }
};

C#

var hash = new Dictionary<string, string>()
    {
        {"key1", "value1"},
        {"key2", "value2"}
    };