Create a command-line-option value object in the unset state (i.e., OptionType::e_VOID == type()), using the specified basicAllocator to supply memory.
Note that (atypically) this constructor disallows 0 for basicAllocator; invoking the constructor with 0 dispatches to the constructor overload that explicitly accepts an int value for its first argument (see below).
| Name | Description |
|---|---|
| basicAllocator | memory allocator; null uses the default |