From: "Iñaki Baz Castillo" <ibc@...>
Date: 2009-04-02T20:55:47+09:00
Subject: String#capitalize more complex

Hi, I receive headers (the protocol syntax allows them being lowcase,
upcase or a mix). For example, the following header names are
equivalent:

a) Record-Route
b) record-route
c) RECORD-ROUTE
d) Record-ROUTE

I'm trying to do a method to convert all of them to:

  Record-Route


Basically what I need is to capitalize all the header name parts after
splitting it using "-" as separator. I can do it as follows:

------------
hname =  "Record-ROUTE"
hname.split("-").map {|w| w.capitalize }.join("-") }  =>  "Record-Route"
------------

Benchmark.realtime { hname.split("-").map {|w| w.capitalize }.join("-") }
1.69277191162109e-05


Is there any option even faster? I think it would be faster if I
operate directly in the original string instead of doing "split" and
"join" (since these last methods create more strings so allocate
memory for them and so). I would prefer to do the modification "in
place".

BTW, could I know how to convert "a" char into "A"? I expected
something as in c:

  'a' + 1 => 'b'
  'a' + ¿X? => 'A'

but in Ruby#String I just find String#next which just increment the
char in one unit ("a".next => "b").

Any suggestion? Thanks a lot.

Thanks a lot.


-- 
Iñaki Baz Castillo
<ibc@aliax.net>