which is better?

[fhein]

which one of the following is the better solution, and do they even produce the same result?

either any-block? data [
   append content rejoin data
][
   append content data
]


or:


append content to-string reduce data

[CarlRead]

I'm pretty sure they'd return the same results.  As to which is better, well it depends on how you define better. :-)  The first version could be refactored though, giving you this...

Code:

append content either any-block? data [rejoin data][data]

Which is still longer than your other version, so it's just a case of which is faster, (probably little difference), or which you think is the more readable.  I'd go for your second version, as I suspect to-string does much the same thing as your any-block? check, just at native speed.

[Sunanda]

The first works with recursive blocks while the to-string option does not.

Try it with this data:

data: copy []
append/only data data