From: Dan Doel <djd15@...>
Date: 2003-10-30T07:17:13+09:00
Subject: Re: [RCR] #inject, #partition expand array if arity > 2

I believe it's just assignment semantics.

Block parameters are set in the same way that an assignment statement is
evaluated, so essentially, it's the same as something like:

x = [["name", "john"], ["age", 20]]

h, (k,v) = {}, x[0]

which does:
h = {}
(k,v) = ["name", "john"]  # (k = "name", v = "john")

When assignments involve commas, they're implicitly converted to arrays, so
the above is the same as:

[h, [k, v]] = [{}, x[0]]

which explains why things happen the way they do.

Cheers,

- Dan