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from typing import List


def good_pair(nums: List[int]) -> int:
    good_pair_count = 0
    for i in range(len(nums)):
        for j in range(i+1, len(nums)):
            if nums[i] == nums[j] and i < j:
                good_pair_count += 1

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MongoDB C# Driver Cheat Sheet

(C) 2015 by Derek Hunziker, (C) 2017 by AppsOn

As of releasing MongoDB 3.4 and C# Driver v2.4, original cheatsheet by Derek is outdated. In addition, it has some deficiencies like connecting to MongoDB, creating indexes, etc. This updated version works fine with C# Driver v2.4.7 and MongoDB v3.4.

Setup

Define Document Models

Note: Defined models and collections will be used in entire cheatsheet.

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