From: "Eijiro Sumii" <eijiro.sumii@gmail.com>
To: "Caml List" <caml-list@inria.fr>
Cc: "Eijiro Sumii" <sumii@ecei.tohoku.ac.jp>
Subject: Stroustrup et al. propose to introduce "lambda closures" in C++
Date: Fri, 17 Mar 2006 19:07:32 +0900 [thread overview]
Message-ID: <a4d0794e0603170207x2c584885k6b928032e4929d40@mail.gmail.com> (raw)
Hi,
A friend of mine informed me of this report
Lambda expressions and closures for C++
Jeremiah Willcock, Jaakko Jarvi, Doug Gregor, Bjarne Stroustrup,
Andrew Lumsdaine
2006-02-26
http://public.research.att.com/~bs/N1968-lambda-expressions.pdf
and I thought you might be interested. (I searched a little and
didn't find any discussion on this report in this list.)
A few highlights:
----------------------------------------------------------------------
We propose to extend the C++ language with lambda expressions, and
define the semantics of these unnamed local functions via translation
to closures: function objects implemented using local classes.
...
void f() {
int sum = 0;
for each(a.begin(), a.end(),
<>(int x) -> int extern(sum) {return sum += x;});
}
...
2.1 Omitting the return type
The return type of a lambda expression can be omitted if the body
of the lambda function contains at most one return statement.
----------------------------------------------------------------------
Enjoy:-),
Eijiro
reply other threads:[~2006-03-17 10:07 UTC|newest]
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