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How to get next/previous record in MySQL?
...o cemkalyoncu's solution:
next record:
SELECT * FROM foo WHERE id > 4 ORDER BY id LIMIT 1;
previous record:
SELECT * FROM foo WHERE id < 4 ORDER BY id DESC LIMIT 1;
edit: Since this answer has been getting a few upvotes lately, I really want to stress the comment I made earlier about un...
Difference between pre-increment and post-increment in a loop?
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@JonB The order of operations in the answer is not exactly correct. Both ++i and i++ perform the same operations in the same order: create temp copy of i; increment the temp value to produce a new value (not to override the temp); stor...
How do I get jQuery to select elements with a . (period) in their ID?
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there must be quates in order to work:` $( "div[id='"+variable+"']" )` or ` $( "div[id='foo bar' ]" ) `
– olga
Sep 11 '16 at 23:39
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Detecting endianness programmatically in a C++ program
...s just to use the built in network byte conversion ops (since network byte order is always big endian).
if ( htonl(47) == 47 ) {
// Big endian
} else {
// Little endian.
}
Bit fiddling could be faster, but this way is simple, straightforward and pretty impossible to mess up.
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List vs Set vs Bag in NHibernate
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NHibernate semantics:
List: Ordered collection of entities, duplicate allowed. Use a .NET IList in code. The index column will need to be mapped in NHibernate.
Set: Unordered collection of unique entities, duplicates not allowed. Use Iesi.Collection.ISe...
How to get the browser viewport dimensions?
... others) you must have the <!DOCTYPE html> at the top of the page in order for the code to work.
– Tzury Bar Yochay
May 9 '13 at 7:44
6
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Does Python have an ordered set?
Python has an ordered dictionary . What about an ordered set?
14 Answers
14
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What is the meaning of the term arena in relation to memory?
...ost importantly, it requires platform-specific knowledge to get the memory ordering right. I use "magic" for things that can either not be written portably by the user at all (like an efficient mutex, or tcmalloc, or the type name of a lambda), or only with extreme heroics (like std::function); I do...
How come a non-const reference cannot bind to a temporary object?
...values to non-const references.
This was a deliberate design decision in order to prevent users from accidentally modifying an object that is going to die at the end of the expression:
g(getx()); // g() would modify an object without anyone being able to observe
If you want to do this, you wil...
What do Clustered and Non clustered index actually mean?
...h a clustered index the rows are stored physically on the disk in the same order as the index. Therefore, there can be only one clustered index.
With a non clustered index there is a second list that has pointers to the physical rows. You can have many non clustered indices, although each new index...