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From: Kevlin Henney (kevlin_at_[hidden])
Date: 2005-05-03 03:27:22

In message <8dee398f92d54b9e2f27e107ee73052c_at_[hidden]>, Dave Dribin
<dave-ml_at_[hidden]> writes
>On May 1, 2005, at 1:56 PM, Kevlin Henney wrote:
>> This issue of providing a default value in case of failure was
>>discussed in the early days of lexical_cast, but not included. In
>>fact, if you go back far enough, opting for the default or zero
>>constructed value of the target rather than throwing an exception was
>>the original behaviour.
>> However, the accommodation of an additional argument was not included
>>in lexical_cast in part for the simple reason that it ceases to look
>>like a cast and in part because once you start down that road there
>>are a number of additional arguments and options that you might want
>>that are "reasonable". It was felt that much of this would be better
>>off in a general conversions library that had no pretensions to being
>I agree that the default behavior should throw an exception. It just
>seems silly to create a whole new library that could be done in an
>existing one with about 5 lines of code. And I'd prefer a
>multi-argument cast-like function than include yet *another* 3rd party
>library with my application. Anyhow, I have an idea or two as
>alternatives. If you're interested, lemme know, otherwise I'll drop
>the whole idea. :)

I'd be interested to hear your ideas.


   Kevlin Henney                   phone:  +44 117 942 2990
   mailto:kevlin_at_[hidden]     mobile: +44 7801 073 508        fax:    +44 870 052 2289
   Curbralan: Consultancy + Training + Development + Review

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