From: jzakiya <jzakiya@...>
Date: 2010-12-28T03:00:16+09:00
Subject: Re: inject issue

On Dec 27, 12:46 pm, w_a_x_man <w_a_x_...@yahoo.com> wrote:
> On Dec 27, 2:10 am, jzakiya <jzak...@gmail.com> wrote:
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> > When I do this:
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> > %w/ap mathn roots facets/.inject :require
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> > whatever is the first item in the list doesn't get loaded by 'require'
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> > When I do this:
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> > %w/ap mathn roots facets/.inject 0, :require or .inject(0, :require)
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> > then the first item is also loaded.  (the '0' can be essentially
> > anything)
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> > Is this a bug, or is this the expected operation?
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> > This behavior is consistent across 1.8.7, 1.9.1/2 and jruby using RVM.
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> It's clearer to use fences.
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> %w(ap mathn roots facets).each{|s| require s}

Why question is on the operation of 'inject'.

Are these different:

%w/lib1 lib2 lib3/.inject :require
%w/lib1 lib2 lib3/.inject 0, :require

because 'require' operates on one item at a time
whereas these are equivalent:

(1..100).inject :+
(1..100).inject 0, :+

because '+' operates on two items at a time?

Again, my focus in why 'inject' behaves differently under these two
examples.