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The proposal for latches and barriers in C++ is already at its sixth
revision + an additional paper to propose std::flex_latch.
While I globally like the proposed interface, I wonder whether operator--
and operator-= could be overloaded to complement
or replace count_down in the proposed std::latch and std::flex_latch. I
feel that for this particular purpose, these operators
are meaningful and may even be more expressive than count_down.

As a note, I suppose that the name count_down may come from Java's
CountDownLatch.countDown, and Java is known not
to offer operator overloading.


N4204, Latches and Barriers:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4204.html
N4224, Supplements to Latches:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4224.html
Java's CountDownLatch:
http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/CountDownLatch.html

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<div dir=3D"ltr">The proposal for latches and barriers in C++ is already at=
 its sixth revision + an additional paper to propose std::flex_latch.<br>Wh=
ile I globally like the proposed interface, I wonder whether operator-- and=
 operator-=3D could be overloaded to complement<br>or replace count_down in=
 the proposed std::latch and std::flex_latch. I feel that for this particul=
ar purpose, these operators<br>are meaningful and may even be more expressi=
ve than count_down.<br><br>As a note, I suppose that the name count_down ma=
y come from Java's CountDownLatch.countDown, and Java is known not<br>to of=
fer operator overloading.<br><br><br>N4204, Latches and Barriers: <a href=
=3D"http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4204.html">htt=
p://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4204.html</a><br>N422=
4, Supplements to Latches: <a href=3D"http://www.open-std.org/jtc1/sc22/wg2=
1/docs/papers/2014/n4224.html">http://www.open-std.org/jtc1/sc22/wg21/docs/=
papers/2014/n4224.html</a><br>Java's CountDownLatch: <a href=3D"http://docs=
..oracle.com/javase/7/docs/api/java/util/concurrent/CountDownLatch.html">htt=
p://docs.oracle.com/javase/7/docs/api/java/util/concurrent/CountDownLatch.h=
tml</a><br></div>

<p></p>

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