20130628-dojo-max-key-lambdas.ipynb

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    "a = [2, 3, -3, 3, 7, -7, 7, -7, -8, 8]\n"
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   "source": [
    "max(a, key = lambda x: x ** 2)"
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     "execution_count": 3,
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   "source": [
    "max(a, key = lambda x: a.count(x))"
   ]
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