VS8 adds for each as a nonstandard unmanaged C++ extension
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Try it! The syntax is for each(type declaration in collection). I'm not compiling with /clr at all, and it works just fine. I've been using BOOST_FOREACH for awhile now (macro'd to foreach()), but it will be very hard to avoid this in the name of portability. :)
I'll be damned, it does work.
EDIT: MSDN.
#include <vector>#include <cstdlib>#include <algorithm>#include <iostream>using namespace std;int main(int argc, char* argv[]){ vector<int> numbers; generate_n(back_inserter(numbers), 10, rand); for each(int i in numbers) { cout<<i<<endl; } return 0;}EDIT: MSDN.
*holy cr%p!* [totally]
Hmm, BOOST_FOREACH? I can't find it in the 1.33 dist... is it only in CVS?
edit: Nevermind, found it here. YEAH!!!
Hmm, BOOST_FOREACH? I can't find it in the 1.33 dist... is it only in CVS?
edit: Nevermind, found it here. YEAH!!!
#if _MSC_VER >= 1400#define foreach(var, container) if(false) {} else for each(var in container)#else#define foreach(var, container) BOOST_FOREACH(var, container)#endifNow it's portable.
EDIT: ...as long as you only iterate over standard containers, since Boost.Foreach also supports iterating any Boost.Range.
[Edited by - jdhardy on December 3, 2005 3:21:16 PM]
which is weird, because we already have std::for_each. If only they'd chosen to add lambdas instead.
Now that's just plain messed up. I mean, everyone knows there is no such thing as a for each construct in C++, so, WTF? Adding obviously non-standard things like that is, in my opinion, not a very clever thing for Microsoft to do..
Huh, that does look intersting. Still, I'd prefer real lambdas built into the compiler, rather than brittle template hacks which produce 200-line error messages.
Quote:Original post by SirLuthor
Now that's just plain messed up. I mean, everyone knows there is no such thing as a for each construct in C++, so, WTF? Adding obviously non-standard things like that is, in my opinion, not a very clever thing for Microsoft to do..
It's probably just an artifact from the C++/CLI for each construct. Basically it was already in the compiler anyways.
Quote:Original post by SiCraneQuote:Original post by SirLuthor
Now that's just plain messed up. I mean, everyone knows there is no such thing as a for each construct in C++, so, WTF? Adding obviously non-standard things like that is, in my opinion, not a very clever thing for Microsoft to do..
It's probably just an artifact from the C++/CLI for each construct. Basically it was already in the compiler anyways.
Exactly. The for each, in construct was designed for C++/CLI, however in building it they also added support for arrays and standard C++ containers.
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