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Programming > C++ > Re: STL set/map...
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Re: STL set/map w.r.t const char*

by Ian Collins <ian-news@[EMAIL PROTECTED] > May 6, 2008 at 11:04 PM

S S wrote:
> On May 6, 2:48 pm, dizzy <di...@[EMAIL PROTECTED]
> wrote:

>> It does not need to. And btw, it does not want to find equality, it
wants to
>> find "equivalence", any good stdlib book will describe the difference
>> between the two. Basically, you check for equality with op==/!= and you
>> check for equivalence with an expression like iff (!(arg1 < arg2) &&
!(arg2
>> < arg1)) then arg1 and arg2 are equivalent for your given order
predicate.
>>
>>> I just
>>> mentioned strcmp(s1, s2) < 0
>>> which means, when strcmp(s1, s2) == 0 (in case of match)
>>> it will return false. So how set/map are able to find the const char*
>>> value?
>> See above.
> 
> Dizzy,
> 
> How does this strcmp(s1, s2) < 0 fitting in the equivalence theorem?
> It will not return true in case they are equivalent.

It does not, reread the reply to see how the less than operator is used
to determine equivalence.

-- 
Ian Collins.
 




 17 Posts in Topic:
STL set/map w.r.t const char*
S S <sarvesh.singh@[EM  2008-05-06 02:28:00 
Re: STL set/map w.r.t const char*
"Jim Langston"   2008-05-06 02:38:48 
Re: STL set/map w.r.t const char*
Ian Collins <ian-news@  2008-05-06 21:45:25 
Re: STL set/map w.r.t const char*
dizzy <dizzy@[EMAIL PR  2008-05-06 12:48:27 
Re: STL set/map w.r.t const char*
Ian Collins <ian-news@  2008-05-06 21:58:20 
Re: STL set/map w.r.t const char*
S S <sarvesh.singh@[EM  2008-05-06 03:34:07 
Re: STL set/map w.r.t const char*
S S <sarvesh.singh@[EM  2008-05-06 03:34:45 
Re: STL set/map w.r.t const char*
Ian Collins <ian-news@  2008-05-06 23:02:48 
Re: STL set/map w.r.t const char*
S S <sarvesh.singh@[EM  2008-05-06 03:38:11 
Re: STL set/map w.r.t const char*
Ian Collins <ian-news@  2008-05-06 23:04:47 
Re: STL set/map w.r.t const char*
S S <sarvesh.singh@[EM  2008-05-06 04:01:55 
Re: STL set/map w.r.t const char*
S S <sarvesh.singh@[EM  2008-05-06 04:21:30 
Re: STL set/map w.r.t const char*
dizzy <dizzy@[EMAIL PR  2008-05-06 15:48:36 
Re: STL set/map w.r.t const char*
James Kanze <james.kan  2008-05-06 05:28:54 
Re: STL set/map w.r.t const char*
terminator <farid.mehr  2008-05-06 07:25:33 
Re: STL set/map w.r.t const char*
S S <sarvesh.singh@[EM  2008-05-06 08:10:32 
Re: STL set/map w.r.t const char*
"Andrew Koenig"  2008-05-07 19:10:49 

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tan12V112 Fri Jul 25 21:20:10 CDT 2008.