RE: [Boost-Users] Getting the hang of Boost::Bind

9 Aug 2002


      
...
-----Original Message-----
From: Duane Murphy [mailto:duanemurphy@mac.com]
Sent: Friday, August 09, 2002 3:23 PM
To: Boost Users
Subject: Re: [Boost-Users] Getting the hang of Boost::Bind
--- At Fri, 9 Aug 2002 15:08:06 -0700, Tom Matelich wrote:
...
I have a vector of
class Landmark
{
public:
  std::string const& getName() const;
...
};
I want to do a find_if for a name that I have.
something like
std::find_if(begin, end, boost::bind(std::equalstd::string(???,
name_to_find)));
What do I put for the ??? ?
Nothing. Your done. :-) bind takes a pointer to a function 
(among other
things) as the first parameter. It then calls that function with the
parameters you specify. You use _1, etc for parameters that 
are input to
bind. In your case:
std::find_if(begin, end, boost::bind(std::equalstd::string,
name_to_find, _1)));
But I have to compare name_to_find to the result of _1.getName() don't I?

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