Create a nullable object having the null value.

Synopsis

Declared in <bdlb_nullablevalue.h>

NullableValue(bsl::nullopt_t const& nullopt) noexcept;

Description

Create a nullable object having the null value. If TYPE takes an optional allocator at construction, use the currently installed default allocator to supply memory for subsequent values assigned to this object.

Parameters

Name

Description

nullopt

disengaged‐optional tag

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