implicit

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The implicit keyword is used to overload a conversion operator. For example, you may declare a Fraction class that should automatically be converted to a double when needed, and that can be automatically converted from int:

class Fraction(int numerator, int denominator)
{
    public int Numerator { get; } = numerator;
    public int Denominator { get; } = denominator;
    // ...
    public static implicit operator double(Fraction f)
    {
        return f.Numerator / (double) f.Denominator;
    }
    public static implicit operator Fraction(int i)
    {
        return new Fraction(i, 1);
    }
}

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