This type represents the JSON null value. There is only 1 value of this type, so all objects compare equal, hash to the same value, etc.

Synopsis

Declared in <bdljsn_jsonnull.h>

class JsonNull;

Member Functions

Name

Description

print

Write "null" to the specified output stream, and return a reference to stream. 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).

Non-Member Functions

Name

Description

operator!=

Same as the related overload above for operator!=.

operator!=

Return false (unconditionally) as the specified lhs and rhs cannot have the different values.

operator==

Return true (unconditionally) as the specified lhs and rhs must have the same value.

operator==

Same as the related overload above for operator==.

swap

Exchange the values of the specified a and b objects. This exception provides the no‐throw exception‐safety guarantee. Note that, since a and b have the same value (a class invariant), this operation is a no‐op.

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