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Re: NMinimize problem: fct minimized uses FindRoot

• To: mathgroup at smc.vnet.net
• Subject: [mg123646] Re: NMinimize problem: fct minimized uses FindRoot
• From: "Oleksandr Rasputinov" <oleksandr_rasputinov at hmamail.com>
• Date: Wed, 14 Dec 2011 06:01:21 -0500 (EST)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• References: <201112121143.GAA12817@smc.vnet.net> <jc7asl$p1d$1@smc.vnet.net>

On Tue, 13 Dec 2011 10:54:13 -0000, Oliver Ruebenkoenig  
<ruebenko at wolfram.com> wrote:

>
> On Mon, 12 Dec 2011, Oleksandr Rasputinov wrote:
>
>> For example, the erroneous usage:
>>
>> Block[{a = 1, b = 2}, Return[a]; Return[b]]
>
> You can "fix" this by using
>
> Block[{a = 1, b = 2}, Return[a, Block]; Return[b]]
>
> but Throw/Catch is probably a better bet.
>
> Oliver
>

Interesting; this two-argument form of Return seems like it could be quite  
useful. However, as far as I can see, this possibility has never been  
listed on the main page for Return, nor on those for Break or Continue  
(with which a second argument can also be used), even though it has been  
allowed since version 4 at the latest. The only documentation that I could  
find suggesting that it exists at all is for the message (Return::nofunc)  
that one sees after using it incorrectly. Is this likely to change in  
future, or has it been left deliberately undocumented to discourage its  
use?

• Follow-Ups:
  • Re: NMinimize problem: fct minimized uses FindRoot
    • From: Oliver Ruebenkoenig <ruebenko@wolfram.com>

• References:
  • Re: NMinimize problem: fct minimized uses FindRoot
    • From: "Oleksandr Rasputinov" <oleksandr_rasputinov@hmamail.com>