[Issue 5660] yield syntax sugar

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=5660



--- Comment #10 from bearophile_hugs at eml.cc 2014-01-07 18:32:09 PST ---
I think a "yield" with an usage syntax like this (semantically similar to the
Python "yield") that's syntax sugar for a ForwardRange is a good and handy
addition to the language:


yield(int) foo() {
    yield 1;
    yield 2;    
}
void main() {
    import std.stdio, std.algorithm;
    foo.map!(x => x).writeln;
}


See also for an improvement:
http://www.python.org/dev/peps/pep-0380/

That explains the desire for also a "yield foreach" (this is not a replacement
for "yield", it's an addition):


yield(int) bar() {
    yield foreach foo();
}

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