| // Different representations of the same number or string are treated as the same Map key. |
| |
| var m = new Map; |
| var test = function test(a, b) { |
| m.set(a, 'secret'); |
| assertEq(m.get(b), 'secret'); |
| m.set(b, 'password'); |
| assertEq(m.get(a), 'password'); |
| |
| assertEq(a, b); |
| }; |
| |
| // Float and integer representations of the same number are the same key. |
| test(9, Math.sqrt(81)); |
| |
| // Ordinary strings and ropes are the same key. |
| var a = Array(1001).join('x'); |
| var b = Array(501).join('x') + Array(501).join('x'); |
| test(a, b); |
| |
| // Two structurally different ropes with the same characters are the same key. |
| a = ""; |
| b = ""; |
| for (var i = 0; i < 10; i++) { |
| a = Array(501).join('x') + a; |
| b = b + Array(501).join('x'); |
| } |
| test(a, b); |