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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

NameDescription
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.