From: Bulat Ziganshin <bulatz@...>
Date: 2003-02-27T17:52:32+09:00
Subject: Re: Return Values of [] for Array, Hash,... (ruby 1.6.8)

Hello Michael,

Thursday, February 27, 2003, 11:38:42 AM, you wrote:

>> > def fu h, key, o
>> >     e = h[key]
>> >     e.val = f1(o) 
>> >     e.val2 = f2(o)
>> > end

MB> The problem is the following (not mine):
MB> If the above function (which was an example of the core problem) is 
MB> taken generic, if modifications are done by a proc passed as forth 
MB> parameter, you'll need an extra line h[key] = e at the end to make this 
MB> "algorithm" work for Integers too. So, as this example shows, it would 
MB> be useful for generic programming, when all types are handled the same 
MB> way. 

ALL TYPES ARE HANDLED SAME WAY. code above contains one assignment
and two function calls, it is equal to:

    e = h[key]
    e.send("val=", f1(o))
    e.send("val2=", f2(o))


-- 
Best regards,
 Bulat                            mailto:bulatz@integ.ru