Re: [Boost-users] Boost program_options

Subject: Re: [Boost-users] Boost program_options
From: Ilya Sokolov (ilyasokol_at_[hidden])
Date: 2009-08-25 04:56:47

Steven Watanabe wrote:
> AMDG
> 
> Steve Nolen wrote:
>>>>> I know the c standard calls for the argv in main's prototype to be
>>>>> non-const, but why can't parse_command_line be more restrictive?
>>>>>         
>>>>         
>>>
>>> Because it that case, you won't be able to pass main's argv to 
>>> parse_command_line.
>>
>> ok why not?  you would be passing a non-const (main::argv) to a const 
>> qualified parameter.  this would just guarantee that the function 
>> couldn't modify it (which is what you're telling me is the case 
>> here).  i thought this was allowed.
>>   
> 
> No.  The standard allows conversion from
> char* to const char*, but not from char** to const char**.

But it allows conversion from char** to const char* const*.