string when not using an output range; void otherwise.Date.toISOString
string toISOString() const @safe pure nothrowConverts this Date to a string with the format YYYYMMDD. If writer is set, the resulting string will be written directly to it.
Parameters
writer | A char accepting output range |
Returns
A
void toISOString(W)(ref W writer) if (isOutputRange!(W, char)) constditto