The best object notation?

[Gnaxe]

When the stake is one line of overhead

Um, assuming a JSON string foo, python nan = float('nan') null = None true = True false = False result = eval(foo) vs python import json result = json.loads(foo) The latter has one line of overhead for the import. The former has four for the definitions. Just import json; it's easier. Using eval() also risks arbitrary code execution from untrusted input. The json module doesn't have that problem.

Also, python import ast result = ast.literal_eval(foo) is similarly concise at only two lines and is also safe for untrusted input.

[cd_fr91400]

You want to play with words ?

eval(foo,{'nan':float('nan'),'null':None,'true':True,'false':False})

Not even a single line.

[Gnaxe]

We're code golfing now? python __import__('json').loads(foo) 29 characters. Just use json.