 Details of that conversion are unspecified.
2) For this expression to be valid, the key must be
associated with some value, otherwise the result is undefined.
3) The value type of the property map must model Output Streamable.</p>
<pre class="literal-block">
void put(const any&amp; key, const any&amp; value)
</pre>
<p>Given a representation of a key and a representation of a value, the
key and value are associated in the property map.</p>
<p>Requirements:
1) The object passed as the key must be convertible