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C++: Difference between revisions
→std::unordered_set
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Also known as maps or associative arrays. | Also known as maps or associative arrays. | ||
====std::unordered_set==== | ====std::unordered_set==== | ||
[https://en.cppreference.com/w/cpp/container/unordered_set reference]<br> | |||
<code>#include <unordered_set></code><br> | <code>#include <unordered_set></code><br> | ||
This is a hashset.<br> | This is a hashset.<br> | ||
<syntaxhighlight lang="cpp> | <syntaxhighlight lang="cpp> | ||
std::unordered_set<int> my_set; | std::unordered_set<int> my_set; | ||
// | // Add | ||
my_set.insert(5); | my_set.insert(5); | ||
// Check contains | // Check contains | ||
my_set.find(5) != my_set.end(); | my_set.find(5) != my_set.end(); | ||
// Remove | |||
my_set.erase(5); | |||
</syntaxhighlight> | </syntaxhighlight> | ||
====std::unordered_map==== | ====std::unordered_map==== | ||
;Custom Keys | ;Custom Keys | ||