On Wed, Oct 24, 2012 at 7:44 PM, Todd Benson <[email protected]> wrote:
> I'm writing a simple script and need to shoot off methods based on
> user input via ARGV. I'm trying to avoid the if, elseif chain, so
> right now I'm using send...
>
> h = {
> "a" => :add,
> "d" => :display
> #etc
> }
> #other code
> my_obj.send(h[user_input], parameters)
>
> I'm just wondering if there is a more common practice for this sort of thing.
Another approach would be to replace the symbols in the Hash by
lambdas and invoke them.
h= {
"a" => lambda {|p1, p2, p3| ...},
"d" => lambda {|p1, p2, p3| ...},
}
h[user_input][parameters]
h[user_input].call(parameters)
Note though that in this case the object is missing. You could
include that in the closures though.
Kind regards
robert
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/
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