# implicit

suggest changeThe `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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