[#BloombergLP-balb-PerformanceMonitor-ConstIterator]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balb.adoc[balb]::xref:BloombergLP/balb/PerformanceMonitor.adoc[PerformanceMonitor]::ConstIterator
:relfileprefix: ../../../
:mrdocs:

Provide a mechanism that models the "Forward Iterator" concept over a collection of non‐modifiable performance statistics.

== Synopsis

Declared in `<balb_performancemonitor.h>`

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

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/balb/PerformanceMonitor/ConstIterator/difference_type.adoc[`difference_type`] 
| Defines a type alias for the type of the result of the difference between the addresses of two value types.
| xref:BloombergLP/balb/PerformanceMonitor/ConstIterator/iterator_category.adoc[`iterator_category`] 
| Defines a type alias for the tag type that represents the iterator concept this class models.
| xref:BloombergLP/balb/PerformanceMonitor/ConstIterator/pointer.adoc[`pointer`] 
| Defines a type alias for a pointer to this iterator's value type.
| xref:BloombergLP/balb/PerformanceMonitor/ConstIterator/reference.adoc[`reference`] 
| Defines a type alias for a reference to this iterator's value type.
| xref:BloombergLP/balb/PerformanceMonitor/ConstIterator/value_type.adoc[`value_type`] 
| Defines a type alias for the type of the result of dereferencing this iterator.
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/balb/PerformanceMonitor/ConstIterator/2constructor-09.adoc[`ConstIterator`]         [.small]#[constructor]#
| Create an instance of this class having an invalid value.
| xref:BloombergLP/balb/PerformanceMonitor/ConstIterator/operator_star.adoc[`operator*`] 
| Return a reference to the non‐modifiable value type of this iterator.
| xref:BloombergLP/balb/PerformanceMonitor/ConstIterator/operator_inc-02.adoc[`operator++`] 
| Increment operators
| xref:BloombergLP/balb/PerformanceMonitor/ConstIterator/operator_ptr.adoc[`operator‐>`] 
| Return a reference to the non‐modifiable value type of this iterator.
| xref:BloombergLP/balb/PerformanceMonitor/ConstIterator/operator_eq.adoc[`operator==`] 
| Return `true` if the specified `rhs` iterator points to the same instance of the iterator's value type as "this" iterator, and `false` otherwise. The behavior of this function is undefined unless the `rhs` iterator and "this" iterator both iterate over the same collection of Statistics.
| xref:BloombergLP/balb/PerformanceMonitor/ConstIterator/operator_not_eq.adoc[`operator!=`] 
| Return `true` if the specified `rhs` iterator does not point to the same instance of the iterator's value type as "this" iterator, and `false` otherwise. The behavior of this function is undefined unless the `rhs` iterator and "this" iterator both iterate over the same collection of Statistics.
|===


== Friends

[cols="1,4"]
|===
| Name| Description
| `xref:BloombergLP/balb/PerformanceMonitor.adoc[BloombergLP::balb::PerformanceMonitor]`
| Provides a mechanism to collect performance statistics for an arbitrary number of processes running on the local machine.
|===


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