forwardDifference

Compute Forward Difference of range.

TODO: Is there a difference between whether R r is immutable, const or mutable?

TODO: If r contains only one element return empty range.

forwardDifference

(

)

(

R r

)

if (

isInputRange!R

)

Examples

auto x = [long.max, 0, 1];
auto y = x.forwardDifference;
version (show) dbg(y);