Standard conversions

Standard conversions

The standard conversions are those pre-defined conversions that can occur as part of a user-defined conversion.

Standard implicit conversions

The following implicit conversions are classified as standard implicit conversions:

Identity conversions (‎6.1.1)

Implicit numeric conversions (‎6.1.2)

Implicit reference conversions (‎6.1.4)

Boxing conversions (‎6.1.5)

Implicit constant expression conversions (‎6.1.6)

The standard implicit conversions specifically exclude user-defined implicit conversions.

Standard explicit conversions

The standard explicit conversions are all standard implicit conversions plus the subset of the explicit conversions for which an opposite standard implicit conversion exists. In other words, if a standard implicit conversion exists from a type A to a type B, then a standard explicit conversion exists from type A to type B and from type B to type A.