---
name: "__gnu_pbds::detail::lu_counter_policy_base"
section: "3cxx"
platform: "linux"
package: "libstdc++-12-doc"
version: "12.4.0-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/__gnu_pbds::detail::lu_counter_policy_base/3cxx"
---

# \_\_gnu\_pbds::detail::lu\_counter\_policy\_base(3cxx)

Base class for list-update counter policy.

## NAME

\_\_gnu\_pbds::detail::lu\_counter\_policy\_base\< Size\_Type \> - Base class for list-update counter policy.

## SYNOPSIS

`#include <lu_counter_metadata.hpp>`

### Protected Types

typedef Size\_Type **size\_type**\

### Protected Member Functions

template\<typename Metadata\_Reference \> bool **operator()** (Metadata\_Reference r\_data, size\_type m\_max\_count) const\
 **lu\_counter\_metadata**\< size\_type \> **operator()** (size\_type max\_size) const\

## Detailed Description

### template\<typename Size\_Type\>

class \_\_gnu\_pbds::detail::lu\_counter\_policy\_base\< Size\_Type \>"Base class for list-update counter policy.

## Author

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