Write "null" to the specified output stream, and return a reference to stream.
Declared in <bdljsn_jsonnull.h>
std::ostream&
print(
std::ostream& stream,
int level = 0,
int spacesPerLevel = 4) const;Optionally specify an initial indentation level, whose absolute value is incremented recursively for nested objects. If level is specified, optionally specify spacesPerLevel, whose absolute value indicates the number of spaces per indentation level for this and all of its nested objects. If level is negative, suppress indentation of the first line. If spacesPerLevel is negative, format the entire output on one line, suppressing all but the initial indentation (as governed by level).
a reference to stream
| Name | Description |
|---|---|
| stream | output stream |
| level | initial indentation level |
| spacesPerLevel | spaces per indentation level |