From: Gerbeck Shark <lists@...>
Date: 2012-07-25T12:08:55+09:00
Subject: String interpolation / hash of local variables

Hello all-

I'm trying to do something likes

Demonstration Ruby/logic

-------
template = <<-HTML
 <div>%{example}</div>
  ...
 <div>%{foobar}</div>
HTML

for i in special_list
     example = ....
     foobar = ...
     arr.push template % return_magical_hash_with_local_variables()
-------

in Python there is a locals() function that returns a dictionary/hash of
local variables.

In Ruby I've found local_variables() but that does not provide the
values. It should for just the example above! Or perhaps I can be
enlightened by someone here?

The other, dirtier idea is something like this:

-------
template = %q{
 <div>#{example}</div>
  ...
 <div>%{foobar}</div>
}

for i in special_list
     example = ....
     foobar = ...
     arr.push eval("\"template\"")
-------

I believe one should avoid calling eval as much as possible. I tried the
"Facets" package,
"String.interpolate{template}" calls eval, it just masks the fact.

This could be avoided if there were a function that return a dictionary
or hash of local variables.

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