StackOverflow2013

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plurals

PO
primarykey
Id
4132870
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2010-11-09T10:56:41.540
FavoriteCount
0
LastActivityDate
2014-08-27T01:42:01.890
LastEditDate
2014-08-27T01:42:01.890
LastEditorUserId
14860
OwnerUserId
14860
ParentId
4132849
PostTypeId
2
Score
50
ViewCount
0
LastEditorDisplayName
text
Body
<code>strlen</code> usually works by counting the characters in a string until a <code>\0</code> character is found. A canonical implementation would be: <pre><code>size_t strlen (char *str) { size_t len = 0; while (*str != '\0') { str++; len++; } return len; } </code></pre> There is no inherent bug in the function, it works exactly as documented. That's not to say it doesn't have problems, to wit: <ul> <li>if you pass it a "string" that doesn't have a <code>\0</code> at the end, you may run into problems but technically, that's not a C string (a) and it's your own fault.</li> <li>you can't put <code>\0</code> characters in your string but, again, it wouldn't be a C string in that case.</li> <li>it's not the most efficient way - you could store a length up front so you could get the length much quicker.</li> </ul> But none of those are bugs, they're just consequences of a design decision. See also <a href="http://www.joelonsoftware.com/articles/fog0000000319.html">this excellent article</a> by Joel Spolsky where he discusses various string formats and their characteristics, including normal C strings, Pascal strings and the combination of the two, null terminated Pascal strings, though he has a more, shall we say, "colorful" term for them :-) <hr> (a) A C string is defined as a series of non-terminator characters (ie, any other than <code>\0</code>) followed by that terminator. Hence this definition disallows both embedded terminators within the sequence and sequences without such a terminator. Or, putting it more succinctly (as per the ISO standard): <blockquote> A string is a contiguous sequence of characters terminated by and including the first null character. </blockquote>
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PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POstrlen: how does it work?
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PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USpaxdiablo
UserOwnerUserId
1. USpaxdiablo
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1. POstrlen: how does it work?
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1. VO
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2. VO
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3. VO
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CommentsPostId
1. This table or related slice is empty.

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