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@REPLYADDR Kenny McCormack
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@REPLYTO 2:5075/128 Kenny McCormack
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In article <
40b905c7-54ae-4e9f-bd6c-990f8e0e804an@googlegroups.com>,
wij <
wyniijj5@gmail.com> wrote:
>manpage of hsearch(3) says:
>...
>The argument action determines what hsearch() does after an unsuccess
> ful search. This argument must either have the value ENTER, meaning
> insert a copy of item (and return a pointer to the new hash table entry
> as the function result), or the value FIND, meaning that NULL should be
> returned. (If action is FIND, then data is ignored.)
>...
>
>When I want to insert an item into the hash table, I invokes
>hsearch(item,ENTER). But I only want to insert the item when it is not
>in the hash table. How can I do (Only invokes hsearch once. The manpage
>seems not mentioning the condition I am looking for)?
I had never heard of these functions before reading your post. They look
interesting, so thanks for that.
Re: your question. It looks to me that it will "just work". I.e., if the
entry is already there, FIND & ENTER do the same thing.
P.S. The main thing I think is missing from these functions is a "delete"
capability. Oh, and an "edit" capability.
--
Just like Donald Trump today, Jesus Christ had a Messiah complex.
And, in fact, the similarities between the two figures are quite striking.
For example, both have a ragtag band of followers, whose faith cannot be shaken.
--- trn 4.0-test77 (Sep 1, 2010)
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