libstdc++: __gnu_pbds::null_type Struct Reference

libstdc++

__gnu_pbds::null_type Struct Reference
Extensions » Policy-Based Data Structures » Traits

`#include <tag_and_trait.hpp>`

Inheritance diagram for __gnu_pbds::null_type:
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## Detailed Description

Represents no type, or absence of type, for template tricks.

In a mapped-policy, indicates that an associative container is a set.

In a list-update policy, indicates that each link does not need metadata.

In a hash policy, indicates that the combining hash function is actually a ranged hash function.

In a probe policy, indicates that the combining probe function is actually a ranged probe function.

Definition at line 210 of file tag_and_trait.hpp.

The documentation for this struct was generated from the following file:

- tag_and_trait.hpp