On Feb 15, 2007, at 6:15 AM, Gary Wright wrote:
On Feb 15, 2007, at 5:35 AM, Ryan Davis wrote:
try something like:
Every sub-array is converted to a string by applying join
recursively, essentially flattening the array.
I thought of this also but it suggests to me that #join itself is
called on the sub-array, which is not true. The recursive algorithm
is implemented entirely within Array#join.
No, it IS called recursively. rb_ary_join calls rb_protect_inspect
(inspect_join, ...) which in turn calls rb_ary_join.
I considered this detail important because if someone had defined
#join for the subarray (as a singleton method) then they might think
they could 'override' the behavior of #join for that element of the
array.
It is called directly (not via rb_funcall) as is everything else in
core. This is to be expected.
Anyway, that is why I avoided any reference to #flatten and to #join.
I think your avoidance of trying to be unclear has caused your
description (while still better than the original) to be unclear.
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