Boost Users :
Subject: Re: [Boost-users] Boost.Format to a string
From: Szymon Gatner (szymon.gatner_at_[hidden])
Date: 2011-06-26 19:40:02
2011/6/27 John M. Dlugosz <mpbecey7gu_at_[hidden]>:
> I brought this up a while back, and I ran into it again yesterday. Using
> boost::format to produce a string, as opposed to sending it directly to
> cout, is awkward.
> boost::format ("blah blah blah") % exp1 % exp2 %exp3
> is fine in and of itself. But then what? You need to wrap the whole thing
> in extra parens to use str:
> std::string s= (boost::format ("blah blah blah") % exp1 % exp2
> WHY NOT allow implicit conversion to string?
> Or, some other mechanism that doesn't complicate the expression and bury the
> interesting part?
use str() free function:
std::string s = str(boost::format ("blah blah blah") % exp1 % exp2 %exp3)
same when passing format to functions taking std::string params
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