From: Akinori MUSHA <knu@...>
Date: 2003-02-03T22:06:53+09:00
Subject: Re: Hash#+ ?

At Mon, 3 Feb 2003 21:31:53 +0900,
Tom Sawyer wrote:
> > On Sunday 02 February 2003 11:25 pm, Akinori MUSHA wrote:
> > > What's wrong with 'hash3 = hash1.dup.update(hash2)' ?  And I'd like to
> > > know how a non in-place version of update is used that frequently.
> > > Would you show us some (live) examples?
> 
> by the way, whats wrong with 'arr3 = arr1.dup.concat(arr2)' ?

We have live examples that show that Array#+ is useful.  Try grepping
the source tree for /\+=? *[/.  Another reason for Array#+ is that
arrays are stackable and a + operator matches our expectation and an
analogy to String#+.

My question is: would it be so a popular demand to add a new method
for Hash?  We have been living without it and a.dup.update(b) or
{}.update(a).update(b) will do the job if you need the functionality.
I'm not really against the idea, but just curious as to how it is
going to be used.

-- 
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Akinori MUSHA aka / (_ /  ( (__(  @ iDaemons.org / and.or.jp

"It went right by me -- At the time it went over my head
   I was looking out the window.. I should have looked at your face instead"