From: Michel Demazure <michel@...>
Date: 2010-04-30T19:37:58+09:00
Subject: Return values of modifiers

This is logical, but no very useful :

irb(main):007:0> x = 10
=> 10
irb(main):008:0> x = x + 1 if false
=> nil
irb(main):009:0> x = x + 1 if true
=> 11

Idem, a while modifier always returns nil

irb(main):010:0> x += 1 while x < 15
=> nil

It would be nice to get the return value of the last instruction
*before* the test fails.

_md
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