10 hours ago, came across atrick-wied’s ninja object properties in JavaScript, that speaks of code as below:

var x = {};
x[""] = 1;
x[" "] = 2;
x["  "] = 3;

console.log(x);

x = {};
x[String.fromCharCode(1)] = 1;
x[String.fromCharCode(2)] = 2;
x[String.fromCharCode(3)] = 3;
x[String.fromCharCode(4)] = 4;

console.log(x);

This is not very obfuscated JS-code, but indeed fun to see spaces as object properties and space as ✐

On the same lines, out of interest tried exploring the same property in other languages:

Python:

>>> class A(object): pass
>>> a = A()
>>> setattr(a, ' ', 1)
>>> setattr(a, '  ', 2)
>>> setattr(a, '', 3)
>>> getattr(a, '')
3

Ruby:

irb(main):001:0> a = {}
=> {}
irb(main):002:0> a[' '] = 1
=> 1
irb(main):003:0> a['  '] = 2
=> 2
irb(main):004:0> a[' ']
=> 1
irb(main):005:0> a['  ']
=> 2

Perl:

$x = {};
$x->{' '} = 1;
say $x->{' '};
$x->{'  '} = 2;
say $x->{'  '};
$x->{'  '} = 3;
say $x->{'  '};

So it appears most of the major scripting languages have the ninja object property in them!