###  | # Boost.Python ## HolderGenerator Concept

Introduction
Concept Requirements

HolderGenerator Concept

## Introduction

A HolderGenerator is a unary metafunction class which returns types suitable for holding instances of its argument in a wrapped C++ class instance.

## Concept Requirements

### HolderGenerator Concept

In the table below, `G` denotes an type which models HolderGenerator, and `X` denotes a class type.

Expression | Requirements
`G::apply<X>::type` | A concrete subclass of instance_holder which can hold objects of type `X`.

Revised 20 May, 2002

© Copyright Dave Abrahams 2002. All Rights Reserved.

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