From: Robert Klemme <bob.news@...>
Date: 2003-02-04T19:32:57+09:00
Subject: Mismatch between documenation and implementation of Array#join()


Hi,

I'm wondering whether Array#join() has an error or the documentation is
wrong. Documentation says:
"Returns a string created by converting each element of the array to a
string, separated by aSepString." This apparently does not include
flatten(). But the behavior seems to be like flatten() was invoked before:

With Ruby version 1.6.7:

irb(main):015:0* a=[[0,1],[22,33]]
[[0, 1], [22, 33]]
irb(main):016:0> a.join(";")
"0;1;22;33"
irb(main):017:0> a.flatten.join(";")
"0;1;22;33"
irb(main):018:0> [0,1].to_s
"01"
irb(main):019:0>

I would have expected a.join(";") to have returned "01;2233" instead.

Any insights?  Thank you!

Kind regards

    robert