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Macro BOOST_VARIANT_ENUM_PARAMS

BOOST_VARIANT_ENUM_PARAMS — Enumerate parameters for use with variant.

Synopsis

BOOST_VARIANT_ENUM_PARAMS(param)

Description

Expands to a comma-separated sequence of length BOOST_VARIANT_LIMIT_TYPES, where each element in the sequence consists of the concatenation of param with its zero-based index into the sequence. That is, param ## 0, param ## 1, ..., param ## BOOST_VARIANT_LIMIT_TYPES - 1.

Rationale: This macro greatly simplifies for the user the process of declaring variant types in function templates or explicit partial specializations of class templates, as shown in the tutorial.


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