[#bsl-type_index]
= xref:bsl.adoc[bsl]::type_index
:relfileprefix: ../
:mrdocs:

This class implements an in‐core value‐semantic type wrapping a standard `type_info` object.

== Synopsis

Declared in `<bslstl_typeindex.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class type_index;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:bsl/type_index/2constructor.adoc[`type_index`]         [.small]#[constructor]#
| Create a `type_index` object having a reference to the type designated by the specified `target`.
| xref:bsl/type_index/hash_code.adoc[`hash_code`] 
| Return the `hash_code` of the referenced `type_info` object.
| xref:bsl/type_index/name.adoc[`name`] 
| Return the `name` of the referenced `type_info` object.
| xref:bsl/type_index/operator_eq.adoc[`operator==`] 
| Return `true` if this and the specified `other` objects have the same value, and `false` otherwise. Two `type_index` objects have the same value if they refer to the same type.
| xref:bsl/type_index/operator_lt.adoc[`operator<`] 
| Return `true` if the type referenced by this object is ordered before the type referenced by the specified `other` object in the implementation defined ordering of types defined by the compiler, and `false` otherwise.
| xref:bsl/type_index/operator_le.adoc[`operator<=`] 
| Return `true` if the type referenced by this object is the same as the type referenced by the specified `other` object, or ordered before the type referenced by the `other` in the implementation defined ordering of types defined by the compiler, and `false` otherwise.
| xref:bsl/type_index/operator_gt.adoc[`operator>`] 
| Return `true` if the type referenced by this object is ordered after the type referenced by the specified `other` object in the implementation defined ordering of types defined by the compiler, and `false` otherwise.
| xref:bsl/type_index/operator_ge.adoc[`operator>=`] 
| Return `true` if the type referenced by this object is the same as the type referenced by the specified `other` object, or ordered after the type referenced by the `other` in the implementation defined ordering of types defined by the compiler, and `false` otherwise.
| xref:bsl/type_index/operator_3way.adoc[`operator<=>`] 
| Perform a three‐way comparison with the specified `other` object; return the result of that comparison.
|===



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