[boost] [Property Map] put_get_helper, keys are passed by value

Subject: [boost] [Property Map] put_get_helper, keys are passed by value
From: ilker (busesbitermi_at_[hidden])
Date: 2013-04-29 10:32:47

Hello,
I require a pm which returns passed key (itself or a 'part' of it) as mapped
value. For this purpose I wrote another helper since boost::put_get_helper's
put function passes keys by value.
 
  // Pasted as a reminder
  template <class PropertyMap, class Reference, class K, class V>
  inline void
  put(const put_get_helper<Reference, PropertyMap>& pa, K k, const V& v)
  {
    static_cast<const PropertyMap&>(pa)[k] = v;
  }

Is there any way to accomplish this by not introducing another custom helper
? (may be there already something similar exists in boost)
Thanks.

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