This class implements a special-use value-semantic variant type used to represent values parsed from process command lines.
Declared in <balcl_optionvalue.h>
class OptionValue;Accordingly, this class can represent values of any of the types defined in balcl_optiontype. Furthermore, that value can also be in a null state (defined type but no defined value) to represent allowed options that do not appear among the command-line arguments (and for which no default value has been configured).
| Name | Description |
|---|---|
OptionValue [constructor] | Constructors |
operator= | Assign to this object the value of the specified rhs object, and return a reference providing modifiable access to this object. |
allocator | Return the allocator used by this object to supply memory. |
hasNonVoidType | Return true if this object is in the unset state, and false otherwise. Note that if false == hasNonVoidType() then OptionType::e_VOID == type(). |
isNull | Return true if the value of this object (irrespective of non-void type) is null. The behavior is undefined unless true == hasNonVoidType(). |
print | Write the value of this object to the specified output stream. |
reset | Reset this object to its default constructed (unset) state. The existing value, if any, is destroyed. Note that on return OptionType::e_VOID == type(). |
set | Set the value of this object to the specified value. |
setNull | Set the value of this object, irrespective of that value's type, to its null state. |
setType | Set the type of this object to the specified type and the value to the default value of that type. |
swap | Efficiently exchange the value of this object with the value of the specified other object. |
the | the overloads |
type | Return the type of this command-line-option value. The type OptionType::e_VOID represents the unset state. |
operator BloombergLP::bslmf::NestedTraitDeclaration<OptionValue, HasPrintMethod> | Nested trait declaration for bslma::UsesBslmaAllocator. |
| Name | Description |
|---|---|
BloombergLP::balcl::swap | Swap the value of the specified a object with the value of the specified b object. |
BloombergLP::balcl::operator== | Return true if the specified lhs and rhs objects have the same value, and false otherwise. |
| Name | Description |
|---|---|
operator!= | Return true if the specified lhs and rhs objects do not have the same value, and false otherwise. |