Unordered associative containers (C++): Difference between revisions

Revision as of 14:40, 23 May 2012

Revision as of 08:39, 21 July 2012

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==Custom hash functions==

In order to use custom objects in std::unordered_map, a custom hash functorfunction must be defined. This function takes a const reference to the custom type and returns a size_t

<source lang="cpp">

struct X{int i,j,k;};