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Update multiple columns in SQL
...equired. I am currently engaged in so doing and in SQL Server 2012 you can now update more than 1 column per @John Woo answer below.
– Hilary
Aug 24 '16 at 10:59
...
How to create a custom attribute in C#
....Class)]
public class MyCustomAttribute : Attribute
Important things to know about attributes:
Attributes are metadata.
They are baked into the assembly at compile-time which has very serious implications of how you could set their properties. Only constant (known at compile time) values are ac...
Chaining multiple filter() in Django, is this a bug?
...__event=event) & Q(shiftregistrations__shifts=False)
What you can do now is to use an annotation count-filter.
In this case we count all shifts which belongs to a certain event.
qs: EventQuerySet = qs.annotate(
num_shifts=Count('shiftregistrations__shifts', filter=Q(shiftregistrations__e...
What is WEB-INF used for in a Java EE web application?
...ld process.
While you are usually free to design your own build process, nowadays most people will use a standardized approach such as Apache Maven. Among other things Maven defines defaults for which resources in the project structure map to what resources in the resulting artifact (the resulting...
Structure padding and packing
...means that it can not deal with an usual byte arrays? Struct packing as I know mostly used in transmitting(i.e networking) a data, when you need to cast a byte array to a struct, and be sure that an array fit to a struct fields. If the spark can not do that, how those working at all?!
...
How line ending conversions work with git core.autocrlf between different operating systems
... @donquixote: I realize this is quite old but I only read your comment now. In fact, all these translations (any EOL conversion from eol= or autocrlf settings, and "clean" filters) are run when files move from work-tree to index, i.e., during git add rather than at git commit time. (Note that gi...
How can I make setuptools install a package that's not on PyPI?
.../github.com/mtai/python-gearman/tarball/master#egg=gearman-2.0.0beta']
)
Now, when YOUR package is being installed, easy_install will discover that there is a "gearman 2.0.0beta" available for download from that URL, and happily pick it over the one on PyPI, if you specify "gearman>=2.0.0beta" ...
Best Practices: Salting & peppering passwords?
...provable or the maintainable models...
Theoretical Problems With Peppers
Now that we've set the stage, let's look at what's wrong with peppers.
Feeding one hash into another can be dangerous.
In your example, you do hash_function($salt . hash_function($pepper . $password)).
We know from past e...
What's the need of array with zero elements?
...s Aniket said), but it was standardized in C99. The standard format for it now is:
struct bts_action {
u16 type;
u16 size;
u8 data[];
} __attribute__ ((packed)); /* Note: the __attribute__ is irrelevant here */
Note that you don't mention any size for the data field. Note also that...
What's the difference between a temp table and table variable in SQL Server?
... | |
| LOP_DELETE_ROWS | LCX_INDEX_INTERIOR | Unknown Alloc Unit | 720 | 9 | 720 | 9 | |
| LOP_DELETE_ROWS | LCX_MARK_AS_GHOST | sys.sysallocunits.clust | 444 | 3 | 444 | 3 | ...