Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
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Associative Sequence
An Associative Sequence is a Sequence which allows efficient retrieval of elements based on keys. For some of associative sequences such as set it is guaranteed that no two elements have the same key. Others, such as multiset, allow multiple elements with the same key.
In addition to Sequence's expressions the following expressions are valid.
| Expression | Expression type |
|---|---|
has_key<s,k>::type | A model of boolean Integral Constant |
count<s,k>::type | A model of Integral Constant |
order<s,k>::type | A model of Integral Constant or void_ |
at<s,k>::type | A type |
at<s,k,default>::type | A type |
| Expression | Complexity | Precondition | Semantics | Postcondition |
|---|---|---|---|---|
has_key<s,k>::type | Amortized constant time | |||
count<s,k>::type | Amortized constant time | |||
order<s,k>::type | Amortized constant time | |||
at<s,k>::type | Amortized constant time |
For any associative sequence s the following invariants always hold:
set
map
set_c
Sequences, Forward Sequence, Extensible Associative Sequence,