Boo is a statically typed language for the Common Language Infrastructure (aka. the Microsoft .NET platform). The syntax is highly inspired by Python, and hashes/lists/array are part of the syntax:
i = 5
if i > 5:
print "i is greater than 5."
else:
print "i is less than or equal to 5."
hash = {'a': 1, 'b': 2, 'monkey': 3, 42: 'the answer'}
print hash['a']
print hash[42]
for item in hash:
print item.Key, '=>', item.Value