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    <p>The problem you are having is related to the fact that <code>operator &lt;&lt; (ostream&amp;, char*)</code> is not a member of ostream, and your temporary ostream instance cannot bind to a non-<code>const</code> reference. Instead, it picks the <code>void*</code> overload, which is a member of ostream, and thus doesn't have that restriction.</p> <p>The best (but not easiest or most elegant, by any stretch of imagination!) would be to use the Boost Preprocessor to generate a large number of function overloads, each templated on a large number of objects (includes have been omitted and assuming <code>using namespace std;</code>):</p> <pre><code>#define MAKE_OUTPUT(z, n, data) \ BOOST_PP_TUPLE_ELEM(2, 0, data) &lt;&lt; BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(2, 1, data), n); #define MAKE_FORMAT(z, n, data) \ template &lt;BOOST_PP_ENUM_PARAMS_Z(z, BOOST_PP_INC(n), typename T)&gt; \ inline string format(BOOST_PP_ENUM_BINARY_PARAMS_Z(z, BOOST_PP_INC(n), T, p)) \ { \ ostringstream s; \ BOOST_PP_REPEAT_##z(z, n, MAKE_OUTPUT, (s, p)); \ return s.str(); \ } </code></pre> <p>It's not guaranteed to work exactly (wrote it without testing), but that's basically the idea. You then call <code>BOOST_PP_REPEAT(N, MAKE_FORMAT, ())</code> to create a series of functions taking up to N parameters that will format your string as you want to (replace N with the integer of choice. Higher values may negatively affect compile times). This should suffice until you get a compiler with variadic templates. You should read the boost preprocessor documentation, it has very powerful features for things like this. (you can subsequently <code>#undef</code> the macros, after calling the <code>BOOST_PP_REPEAT</code> invocation to generate the functions)</p>
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    1. POC++ format macro / inline ostringstream
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    1. COI'll upvote the first paragraph, but not the whole answer.
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      1. USDavid Norman
    2. COThanks, that's very informative. I haven't used Boost much, it's interesting to see what's in there.
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    3. COWhy can't it bind?
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      1. USMr Fooz
 

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