Bool returns a bool value of p or false when p is nil.

Float32 returns a float32 value of p or 0 when p is nil.

Float64 returns a float64 value of p or 0 when p is nil.

Int returns an int value of p or 0 when p is nil.

Int16 returns an int16 value of p or 0 when p is nil.

Int32 returns an int32 value of p or 0 when p is nil.

Int64 returns an int64 value of p or 0 when p is nil.

Int8 returns an int8 value of p or 0 when p is nil.

String returns a string value of p or "" when p is nil.

Uint returns an uint value of p or 0 when p is nil.

Uint16 returns an uint16 value of p or 0 when p is nil.

Uint32 returns an uint32 value of p or 0 when p is nil.

Uint64 returns an uint64 value of p or 0 when p is nil.

Uint8 returns an uint8 value of p or 0 when p is nil.