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What's the false operator in C# good for?
... allow for nullable boolean types prior to the Nullable (i.e. int?, bool?, etc.) type being introducted into the language in C#2. Thus you would store an internal value indicating whether the value is true or false or null, i.e. in your example >0 for true, <0 for false and ==0 for null, and t...
PreparedStatement IN clause alternatives?
...ck a page for multiple values, tablescan only once instead once per value, etc) may save on overhead if your database doesn't cache prepared statements. Your "INSERTS" would need to be done in batch and the MYVALUES table may need to be tweaked to have minimal locking or other high-overhead protecti...
How to track down a “double free or corruption” error
...rs you can check this or this or any modern c++ compilers (e.g. gcc, clang etc.) documentations.
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Backing beans (@ManagedBean) or CDI Beans (@Named)?
...ed artifact like @WebListener, @WebFilter, @WebServlet, @Path, @Stateless, etc and even a JSF @ManagedBean. From the other side on, @ManagedProperty does not work inside a @Named or any other container managed artifact. It works really only inside @ManagedBean.
Another difference is that CDI actuall...
Add days to JavaScript Date
...ight saving time. Also, one can add/sub any offset for years, months, days etc.
day=new Date(oldDate.getFullYear()-2,oldDate.getMonth()+22,oldDate.getDate()+61);
is correct code.
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Setting variable to NULL after free
...a struct that holds resources, pointers to allocated memory, file handles, etc., as I free the contained memory pointers and close the contained files, I NULL respective members. Then if one of the resources is accessed via a dangling pointer by mistake, the program tends to fault right there, every...
How does the main() method work in C?
...ndamental setups are executed: setup stack, registers, MMU, memory mapping etc. Then copy-down of init values from NVM to static storage variables occur (.data segment), as well as "zero-out" on all static storage variables that should be set to zero (.bss segment). In C++, constructors of objects w...
Difference between partition key, composite key and clustering key in Cassandra?
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Regarding confusion of which one is mandatory, which one can be skipped etc. in a query, trying to imagine Cassandra as a giant HashMap helps. So in a HashMap, you can't retrieve the values without the Key. Here, the Partition keys play the role of that key. So each query needs to have them speci...
NHibernate ISession Flush: Where and when to use it, and why?
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Brilliant write-up and +1 and etc - however I think an edit might be required because you say at the top "Never use close" and then later "If you rollback the transaction you should immediately close and discard the current session"
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What is Normalisation (or Normalization)?
...s write table defs that include columns like DogName1, DogName2, DogName3, etc.
– Bill
Feb 20 '09 at 21:10
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