Description

A |Variadic Sequence| is a member of a family of sequence classes with both variadic and numbered forms. If seq is a generic name for some |Variadic Sequence|, its variadic form allows us to specify a sequence of n elements |t1...tn|, for any n from 0 up to a `preprocessor-configurable limit`__ BOOST_MPL_LIMIT_seq_SIZE, using the following notation:

seq<|t1...tn|>

By contrast, each numbered sequence form accepts the exact number of elements that is encoded in the name of the corresponding class template:

seqn<|t1...tn|>

For numbered forms, there is no predefined top limit for n, aside from compiler limitations on the number of template parameters.

Expression requirements

|In the following table...| seq is a placeholder token for the actual |Variadic Sequence| name.

Expression semantics

typedef seq<|t1...tn|> s;
typedef seqn<|t1...tn|> s;

typedef seq<|t1...tn|>::type s;
typedef seqn<|t1...tn|>::type s;

Models

• |vector|
• |list|
• |map|

See also

|Sequences|, |Configuration|, |Integral Sequence Wrapper|

<reference anonymous="1" name="variadic">
    variadic

.. |variadic| replace:: `variadic`__

<reference anonymous="1" name="variadic forms">
    variadic forms

.. |variadic forms| replace:: `variadic forms`__

<reference anonymous="1" name="numbered forms">
    numbered forms

.. |numbered forms| replace:: `numbered forms`__