[ruby-talk:02665] Re: win OLE / eRuby

At Tue, 09 May 2000 23:36:48 +0900,
OZAWA Sakuro <[e-mail]> wrote:

> > Could you say why <%=variable%> is necessary instead of <%variable%>?
> <%=foo%> is short form of <%print foo%>

Let me add a small explanation.

What eRuby does is simple.
It replaces all occurances of text to "print" method invocation, except
those inside <% and %> which is replaced with the content itself.

So

  <%the_name = "matz"%>
  <%5.times do%>
    Hello, <%print the_name%>!
  <%end%>

whould yields to

  the_name = "matz"
  5.times do
    print "Hello, "; print the_name; print "!";
  end

<%=...%> pair is shorthand of <%print ...%>, so you can write the above
like this.

  <%the_name = "matz"%>
  <%5.times do%>
    Hello, <%=the_name%>!
  <%end%>

Oh, eRuby can interpret another notation <%# foo %>, too.
Of cource, this is comment and ignored by eRuby:-)

-- 
OZAWA -Crouton- Sakuro
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