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Function std.range.primitives.moveBack
Moves the back of rr.back in a
destroyable state that does not allocate any resources (usually equal
to its .init value).
Prototype
ElementType!R moveBack(R)( R r );
Example
struct TestRange
{
int payload = 5;
@property bool empty() { return false; }
@property TestRange save() { return this; }
@property ref int front() return { return payload; }
@property ref int back() return { return payload; }
void popFront() { }
void popBack() { }
}
static assert(isBidirectionalRange!TestRange);
TestRange r;
auto x = moveBack(r);
assert(x == 5);
Authors
Andrei Alexandrescu, David Simcha, and Jonathan M Davis. Credit for some of the ideas in building this module goes to Leonardo Maffi.