add missing const

This commit is contained in:
Sébastien Loriot 2021-02-17 15:49:08 +01:00
parent d4947399ff
commit 05b4734a6e
1 changed files with 1 additions and 1 deletions

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@ -473,7 +473,7 @@ struct Constant_property_map
typedef KeyType key_type; typedef KeyType key_type;
typedef ValueType value_type; typedef ValueType value_type;
typedef value_type& reference; typedef const value_type& reference;
typedef boost::read_write_property_map_tag category; typedef boost::read_write_property_map_tag category;
Constant_property_map(const value_type& default_value = value_type()) : default_value (default_value) { } Constant_property_map(const value_type& default_value = value_type()) : default_value (default_value) { }