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Does using “new” on a struct allocate it on the heap or stack?
...ocation.
Thirdly, I'm ignoring generics, mostly because I don't actually know the answer, and partly because it would complicate things too much.
Finally, all of this is just with the current implementation. The C# spec doesn't specify much of this - it's effectively an implementation detail. Ther...
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...
Regular expressions in C: examples?
...g PCRE2. This means you can literally use all the regex examples out there now and not have to translate from some ancient regex.
I made an answer for this already, but I think it can help here too..
Regex In C To Search For Credit Card Numbers
// YOU MUST SPECIFY THE UNIT WIDTH BEFORE THE INCLU...
Why use Ruby instead of Smalltalk? [closed]
...
I think the class library point is off base. I know both Smalltalk and Ruby and the class libraries are very similar. Any problems I had learning one, I would have had learning the other. Having done more ruby first, it made the Smalltalk libraries much easier to learn. Th...
Where can I get a list of Ansible pre-defined variables?
...": "virtualbox"
},
"changed": false
}
The current documentation now has a complete chapter listing all Variables and Facts
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Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)
...ity of the object user to correctly to explicitly close the DB connection. Now you could argue that this can be done in the finaliser, but resources may have limited availability or other constraints and thus you generally do want to control the release of the object and not rely on the non determin...
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...
Under what circumstances are linked lists useful?
...
They can be useful for concurrent data structures.
(There is now a non-concurrent real-world usage sample below - that would not be there if @Neil hadn't mentioned FORTRAN. ;-)
For example, ConcurrentDictionary<TKey, TValue> in .NET 4.0 RC use linked lists to chain items that h...
ZeroMQ的学习和研究（PHP代码实例） - C/C++ - 清泛网 - 专注C/C++及内核技术
...t for start of batch
$string = $receiver->recv ();
// Start our clock now
$tstart = microtime(true);
// Process 100 confirmations
$total_msec = 0; // Total calculated cost in msecs
for ($task_nbr = 0; $task_nbr < 100; $task_nbr++) {
$string = $receiver->recv ();
if($task_nbr % 10 == 0)...
MongoDB Many-to-Many Association
...iation then. When doing the SQL way, adding a UserRole will make the User know about the Role and the Role know about the User. This way means I'll have to set the Role on the User, and the User on the Role. I guess that's fine though.
– Josh Close
Feb 25 '10 ...