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Function `std.typecons.Nullable.toString`

Gives the string "Nullable.null" if isNull is true. Otherwise, the result is equivalent to calling std.format.formattedWrite on the underlying value.


						
				string toString();
				

				

				string toString() const;
				

				

				void toString(W)
				(
				

				  ref W writer,
				

				  scope const ref FormatSpec!char fmt
				

				)
				

				if (isOutputRange!(W, char));
				

				

				void toString(W)
				(
				

				  ref W writer,
				

				  scope const ref FormatSpec!char fmt
				

				) const
				

				if (isOutputRange!(W, char));

Parameters

Name	Description
writer	A `char` accepting output range
fmt	A `std.format.FormatSpec` which is used to represent the value if this Nullable is not null

Returns

A string if writer and fmt are not set; void otherwise.

Authors

Andrei Alexandrescu, Bartosz Milewski, Don Clugston, Shin Fujishiro, Kenji Hara

License

Boost License 1.0.