https://issues.dlang.org/show_bug.cgi?id=15798
Ender KaShae <astrotha...@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |astrotha...@gmail.com --- Comment #1 from Ender KaShae <astrotha...@gmail.com> --- Simply changing the Target to a ref wouldn't be backward compatible, because then it wouldn't be possible to use an rvalue as a target, which is useful for copying to an array slice, or using a range that wraps another output range, such as retro. Also, std.range.put _does_ take a reference, and can be used to copy a range. Alternatively, copy returns the state of the output range after copying, so in the MD5 example you could use `s.copy(d2).finish().toHexString` to get the correct MD5 sum. --