Open Radar

 
Summary:
With Swift 2.1 (including the version shipped in Xcode 7.2 beta 3), the code at the end of this section will never finish compiling. Remove the amount of literals in the dictionary will not help until the count is down to single digit. Just by observation, the compilation time is growing exponentially.

let sampleInput = [
    "appts": [
        "00": ["date": "0"],
        "01": ["date": "1"],
        "02": ["date": "2"],
        "03": ["date": "0"],
        "04": ["date": "0"],
        "05": ["date": "1"],
        "06": ["date": "2"],
        "07": ["date": "0"],
        "08": ["date": "0"],
        "09": ["date": "1"],
        "10": ["date": "0"],
        "11": ["date": "1"],
        "12": ["date": "2"],
        "13": ["date": "0"],
        "14": ["date": "0"],
        "15": ["date": "1"],
        "16": ["date": "2"],
        "17": ["date": "0"],
        "18": ["date": "0"],
        "19": ["date": "1"],
        "20": ["date": "1"],
        "21": ["date": "1"],
        "22": ["date": "2"],
        "23": ["date": "0"],
        "24": ["date": "0"],
        "25": ["date": "1"],
        "26": ["date": "2"],
        "27": ["date": "0"],
        "28": ["date": "0"],
        "29": ["date": "1"],
        "30": ["date": "1"],
        "31": ["date": "1"],
        "32": ["date": "2"],
        "33": ["date": "0"],
        "34": ["date": "0"],
        "35": ["date": "1"],
        "36": ["date": "2"],
        "37": ["date": "0"],
        "38": ["date": "0"],
        "39": ["date": "1"],
    ]
]


Steps to Reproduce:
Try to compile the code. Remove some literals and try compile again.

Expected Results:
The code should compile in non-exponential time.

Actual Results:
As is, the code will never finish compiling.