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);
}
}