Andrzej Krzemienski 4e7405a233 Sane swap() for rvalue-aware compilers
When we detect that compiler supports rvalue references, we implement swap() in term of moves (as intuition suggests).
Otherwise we fall back to old tricks with default constructor+swap
2015-05-18 16:51:12 +02:00
2015-01-05 15:49:31 +01:00
2015-05-16 00:06:55 +02:00
2003-01-22 17:54:11 +00:00
2014-04-28 16:01:55 +02:00

optional

A library for representing optional (nullable) objects in C++.

optional<int> readInt(); // this function may return either an int or a not-an-int

if (optional<int> oi = readInt()) // did I get a real int
  cout << "my int is: " << *oi;   // use my int
else
  cout << "I have no int";

For more information refer to the documentation provided with this library.

Description
Boost.org optional module
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