Consevutive calls to r.front
Dennis Ritchie via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Sun Jun 7 17:55:03 PDT 2015
On Monday, 8 June 2015 at 00:42:12 UTC, Mike Parker wrote:
> When implementing a custom range, is it correct to say that
> consecutive calls to r.front with no intervening calls to
> popFront should return the same value?
Yes. For examle:
import std.stdio, std.range;
template foo(T) {
auto foo(R)(R range) {
while (!range.empty) {
writeln(range.front);
// .front --> the first element of the range
range.popFront;
// .popFront --> to extract the first element of the
range
}
}
}
void main() {
foo!(int[])([1, 2, 3]);
}
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